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ATTENDANCE AUDIO WEBINAR
- 2. Product of the Week SHOWCASE Webinar Piping Technology & Products, Inc. August 6, 2009
- 3. PT&P and Subsidiaries Fronek Anchor Darling Ent., Inc. ASME Nuclear Qualified Pipe Shields, Inc. ISO 9001-2000 Certified Sweco Fab, Inc . ASME U-Stamp R-Stamp PIPING TECHNOLOGY & PRODUCTS, INC. Member of MSS, SPED, APFA, U.S. Bellows, Inc. Member of EJMA
- 5. Product of the Week Archives Collection of showcased products at www.pipingtech.com/news
- 6. Constant Spring Supports Big Ton Spring Supports Variable Spring Supports Engineered Spring Supports
- 7. Engineered Spring Supports - Variables Types of Variable Spring Supports Type A Type B Type C Type D Type E Type F Type G
- 10. Engineered Spring Supports - Big Tons “ A table atop muscle springs” Top Load Flange Bottom Load Flange Load Studs Division & Centering Plates Travel Stop Rods Spring Pressure Plate Housing Load Stud Nut Coil Spring Development of the Big Ton Spring Support Innovation and customer service enabled PT&P to carve out a niche in the pipe support industry. The development of the "Big Ton" provides an interesting illustration of this. A customer asked PT&P if there was a way to support a large vessel that would be both stable and economical. PT&P responded by designing the big ton in 1980, which is essentially a table atop muscle springs.
- 13. Engineered Spring Supports - Constants Constant Spring Supports
- 17. Pipe Shoes, Guides & Anchors
- 22. Shock Control Devices Snubbers (Hydraulic & Mechanical) Sway Struts Sway Braces
- 28. Support Assembly Components Hold Down Clamps Saddle Supports and Coverings Riser Clamps Pipe Clamps Clevis Hangers Pipe Hangers Beam Attachments Hardware, Rods and U-Bolts
- 33. Slide Plates Backing Plate Low Coefficient of Friction Material Supported Element Supporting Element “ Sandwich” Concept PTFE, 25% Glass Filled Bronzphite ® Graphite Marinite Stainless Steel
- 34. Slide Plates 43" Angled Pipe Shoes with PTFE, 25% glass filled slide plates Constant Spring Supports with PTFE, 25% glass filled slide plates welded to the load flange Variable Springs with PTFE, 25% glass filled slide plates welded to the top of the load flange Slide Plates - PTFE, 25% Glass Filled
- 38. Hot Shoes Cold Shoes Pre-Insulated Pipe Supports
- 41. Injection-Molded Anchors 42 " NPS 20 " NPS 6 " NPS Pre-Insulated Pipe Supports - Cold Shoes Foam Density: 32 lb. PCF Lateral Load: 15,909 lb. Vertical Load: 40,000 lb. Axial Load: 136,000 lb. Foam Density: 20 lb. PCF Foam Density: 32 lb. PCF Lateral Load: 2,273 lb. Lateral Load: 11,364 lb. Vertical Load: 5,682 lb. Vertical Load: 14,773 lb. Axial Load: 9,773 lb. Axial Load: 62,500 lb.
- 43. Expansion Joints Single Tied Universal Hinged Gimbal Expansion Joint Inline Pressure Balanced Elbow Pressure Balanced Externally Pressurized Toroidal Expansion Joint U.S. Bellows, Inc.
- 44. Expansion Joints Clamshell Bellows (Thin Wall Metallic) Rectangular Expansion Joints Fabric Expansion Joints Neoprene Fabric Thick Wall (Flanged & Flued) Slip-Type U.S. Bellows, Inc.
- 46. Expansion Joints 43 " Hinged Expansion Joints with 5 " Refractory Lining U.S. Bellows, Inc. These expansion joints are part of FFC stand-pipes in a synfuels plant. Each expansion joint is fabricated of 2-ply Inconel bellows and ¾" wall pipe. The joints consist of 2" thick attachment rings. After fabrication, the expansion joints were pneumatically tested and inter-plies tested. The bellows and pipes were 100% x-rayed and PMI tested. Thermal and structural Finite Element Analysis (FEA) was performed on the expansion joints to ensure the product is structurally sound and determining the thermal profile helps to prevent polythionic corrosion on the bellows. Design calculations were performed for all hardware including lug rings, gussets, hinge plates and pins. - Hinged with Refractory Lining
- 49. Expansion Joints 128 " x 229 " Rectangular Fabric Expansion Joints with a Three Layer Belt U.S. Bellows, Inc. Design: Movements: Fabricated with a three layer belt consisting of an inner layer of silica cloth, a middle layer of mineral wool and an outer layer of PTFE/coated fiberglass. The frame includes an insulation blanket of mineral wool and stainless steel wire mesh. The frame and liner are fabricated from ¾“ thick 304 stainless steel and each expansion joint’s frame and liner welds were dye penetrant tested before shipping. - Fabric ¾“ Lateral Displacement Pressure: 1 PSIG 2” Axial Displacement Temperature: 1010 ° F
- 50. Expansion Joints Thick Wall Flanged and Flued Head Expansion Joints U.S. Bellows, Inc. U.S. Bellows, Inc. designed and fabricated two 78" I.D. x 110" O.D. and two 36" I.D. x 68" O.D. thick wall flanged and flued head expansion joints. All four expansion joints were fabricated from ¼" thick ASTM A516 grade 70 carbon steel plate. The expansion joints were cold formed and heat treated to customer requirements. The external surface of the expansion joint was painted with one coat of shop primer. The weld ends of the expansion joint are beveled, and drainage plugs are installed in the crest of the bellows. The bellows long weld seams were 100% dye penetrant and 100% x-ray tested. U.S. Bellows provides 100% customer satisfaction in terms of quality and delivery. - Thick Wall
- 51. Product of the Week Showcase Webinar Please send any additional questions or inquiries to [email_address] We invite you to visit our Discussion Forum at www.pipingtech.com Thank You for Attending…
Notes de l'éditeur
- Display this slide before the presentation begins, while viewers are joining…. If you would like to join in on the audio portion of the presentation, please make sure you select speakers/headphones in the audio choice box and double check that your volume is turned up. You can also listen to us by telephone, for the United States, just dial: (1) 323-417-4600, for countries other than the US, please refer to the list of numbers in your confirmation e-mail. The access code for this presentation is: 600-356-992 Also, if you have a question, please feel free to chat it to us during the presentation in the text box you see to the right of the presentation or if you prefer, you can ask questions after the presentation during our “Questions and Answers Session.”
- Hello everyone, I would like to welcome you to our Product of the Week Showcase. The Webinar today is hosted by Piping Technology & Products. I am Jerry Godina and I will be your presenter.
- For those of you who are unfamiliar with us, I want to quickly go over some background information. If you would like to know more, please visit our “About Us” section at pipingtech.com. Our parent company, Piping Technology & Products, Inc., also known as PT&P, has been… in business since 1975, PT&P and its wholly owned subsidiaries, US Bellows, Sweco Fab, Pipe Shields, and Anchor Darling, offer a wide range of engineered products and services for various industries and applications. Our product line is extensive… from engineered pipe supports, expansion joints, pre-insulated pipe supports, and miscellaneous fabrication to various engineering and technical services, PT&P has decades of experience providing products and services for all your engineering and construction needs. DO NOT go over certifications—they are on the next slide…
- We have achieved various certifications in the past 30 years: PT&P is a member of MSS, SPED, and APFA. We are also a Minority Business Enterprise, as well as, a member of the Houston Minority Business Council. Our U.S. Bellows division is a member of the Expansion Joint Manufacturers’ Association We have the ASME U-Stamp, R-Stamp and N-Stamp for our Sweco Fab division Pipe Shields is ISO 9001-2000 certified for the manufacture of hot and cold supports And we are ASME Nuclear Qualified in our Fronek Anchor Darling division
- PT&P offers a wide range of products, some of those products are showcased in our Product of the Week Archives There you can find pictures and descriptions for most of our product line. This presentation will feature products selected from those archives. We will go over how they are custom and the unique design requirements involved. --Limited number of specific examples --Large quantity on website --Pictures and detailed descriptions
- Pipe system designers must calculate the pull of gravity and for movement due to thermal expansion. Variables, big tons and constants are devices which are cost effective and structurally sound in solving certain pipe support issues. Variables use coiled springs to support a load an movement. The resistance of the coil to a load changes during compression, which is why these devices are called "variables". There are many types of variable springs—which we will quickly go over in the next slide. Big Ton springs are designed primarily for the petrochemical industry where stability and heavy loads are present. Constant Spring Supports are principally used to support pipes and equipment subjected to vertical movement due to thermal expansion at locations where transfer of stress to other supports or equipment can be critical. The maximum recommended variation according to MSS standard from the operating load is 25% for variable spring hangers. If the variation exceeds 25%, a constant support hanger should be used.
- There are many different designs for variable supports and a particular nomenclature used to identify them. The term "type" is used with an alphabetical designation (A-G) to describe seven different physical connections to the supporting structure. The diagrams here illustrate the applications and the physical connections for each type. Hangers are suspended from structural members while base supports (Type F) rest on a supporting surface. Type A: furnished with threaded bushing in the top plate, providing for a simple rod attachment for the upper connection. Types B & C: furnished with one or two lugs welded to the top cap plate of the casing. Type D: permits adjustment from the top, by turning the nuts on the hanger rod against a piece of tubing. The tubing is securely welded to the spring cap. In type D, the spring is set above the supporting steel. Type E: permits rod adjustment from either above or below the spring. The type E spring is set above the supporting steel or can be welded directly to the supporting steel from below. Type F: designed to support piping from below, directly from the floor or supporting steel. Adjustment is made by inserting a bar into holes in the load column and turning the load column as a jack screw. The base plate is bolted to the case and has four holes for fastening. Type G: formed by welding two standard spring assemblies to the ends of a pair of channels. Type G assembly can accommodate unusually heavy loads, and is especially adaptable for avoiding interference in spaces where headroom is limited.
- This project included a variety of variable springs with loads ranging from 526 lb. to 33,723 lb. They are fabricated from a combination of carbon steel and A193-B7 CroMoly steel with the slide plates being A304 stainless steel They were modified to include fully adjustable travel stops , allowing easier installation and to provide a means of adjusting the preset load of the springs prior to installation --Standard travel stops lock in one position -- 1.) Installed load can be readily modified -- 2.) Can act as jacking bolts to aid installation W:\\Productoftheweek\\PW2009\\Misc Unused POTW\\88014-F Type Variables
- All of the spring components are made of A4150H and carbon steel. Per customer's request, a two coat epoxy paint was applied The Type-A assemblies measure 22 " x 79 " with an installed load of 45,000 lb., an operating load of 56,000 lb., and a downward travel of 5 " . (S/R = 2200 lb/in.) The Type-C assemblies measure 22 " x 89 " with an installation load of 38,000 lb., an operating load of 47,000 lb., and a downward travel of 5 ½ " . (S/R = 1635 lb/in.) Each spring coil was tested to insure the wire diameter, coil height, and spring rates. --Non standard finish (1. environmental conditions, 2. location of facility) --Non standard coil housings – maximum standard outside diameter = 12.75" --Non standard spring coils larger outside diameter/wire diameter (produce relatively low spring rate but high load carrying capability) http://www.pipingtech.com/news/arc_pw_2005/engps2005_09.htm
- “ Big Ton” is the name PT&P uses for a special type of variable spring support which was developed for the petrochemical industry. Many of these supports have been in service for more than 20 years. A typical big ton will have a rectangular array of coil springs supporting a pressure plate which in turn support a top load flange. Big tons provide the designer with options that are not available with typical spring supports, because they can support vessels and other components which have piping attached to them. The piping designer can choose to support these components and thus reduce loads which would be transferred to the piping. This is often a more economical and stable design for the entire systems. This type of support is used where two important characteristics in spring supports are necessary: - Extremely stable: Base supports springs of this design are frequently used under horizontal pressure vessel saddle supports in combination with slide plates or roller supports. Our Big Ton design lends itself ideally to this support situation. Type-F design is sufficient where there is a minimal amount of lateral movement, but where the combination of heavy loads and thermal expansion are required, big ton industrial springs should be your choice. - Heavy Loads: The big tons’ multi-spring design lends itself to supporting very high loads. Loads up to 200,000 pounds can be handled with no problems. Note: division & centering plates divide 2 coils stacked on top of each other and the little guides in side that holds spring in place
- The base of the big ton shown here measures 63" square while the top load flange measures 55" square. These big ton springs will be used to support heavy (in excess of 100,000 lb.) loads where a standard variable spring would be undersized. One of the springs has an overall height of 22-7/16" and the other has an overall height of 28-5/8". Both big ton springs are custom designed and fabricated from carbon steel with a hot-dipped galvanized finish. The top of the load flange is covered by a stainless steel slide plate. One of the big ton springs is designed with a operating load of 126,000 lb. and the other with an operating load of 225,000 lb. Prior to fabrication, all of the coils, within the frame, were individually tested to insure correct spring rate and load capacity. After the units are fabricated, the entire assembly is tested throughout the entire load/travel range. http://www.pipingtech.com/news/arc_pw_2008/engps2008_02.htm
- --Example of a “mini” big ton where loads/movement matched standard spring, but overall height was restricted --Standard variable spring could not fit --Solution was to use combination of smaller (shorter) coils which matched load carrying capability --Short overall height could be maintained Job # 103809 W:\\Digital camera---march of 09
- PT&P’s constant support hangers are principally used to support pipes and equipment subjected to vertical movement due to thermal expansion at locations where transfer of stress to other supports or equipment can be critical. The maximum recommended variation according to MSS standard from the operating load is 25% for variable spring hangers. If the variation exceeds 25%, a constant support hanger should be used. The constant resistance to a load is achieved by combining a spring coil with a cam which rotates about a main pivot point. The cam is designed such that the distances from the main pivot changes to compensate for the variable resistance during compression of the coil. The MSS standard provides for a tolerance of 6% in the constant load through the travel range. Our constant support hangers are designed per MSS, ANSI, and ASME standards.
- --Maximum travel per catalog = 20" and this constant has a design travel of 46" --The frame dimensions are: W 40" x H 75" x L 142" --The internal cam component in excess of 74" --Uses an oversized spring --Utilizes rollers and PTFE, 25% glass filled slide plates to reduce the friction resulting from axial movements Job # 68264
- These 200 C-type constant spring supports are fabricated from A-36 carbon steel and are designed for a load ranging between 17,800 lb. and 25,600 lb. They have a downward travel range between 12 1/2" and 16" and maintains a constant load throughout the designed travel. The diameter of the spring coil housing is 21". The design includes a universal locking device capable of locking the hanger rod at any desired position . (fully adjustable) It also includes lifting lugs that aid in installing the constant in the field. Standard load and travel testing was performed before shipping to a steam plant. --Similar to variable spring --Standard is to utilize pin for locking and one location --Universal locking device allows locking at any location within the travel range --Useful when taking spring out of service http://www.pipingtech.com/news/arc_pw_2008/engps2008_04.htm
- Material: A36 carbon steel Dimensions are 11 x 29 x 61 in. Total weight of the constant is 430 lb. Loaded capacity is 2,160 lb. and maximum travel is 15 ". Standard loading and travel tests were performed to ensure quality and performance. --Dual acting constant assemblies --Translational motion of pivoting cam counteracted by mirror image spring assembly This concludes the section on springs supports… if you have questions throughout the Webinar, we have a panel of our top engineers standing by, eager to answer your questions. You can type them in the chat box located to the top right of your Webinar screen. The chat box can be popped out by pressing the arrows. http://www.pipingtech.com/news/arc_pw_2005/engps2005_07.htm (W:\\digital_camera\\2005\\August05\\job81599B_constants) And www.pipingtech.com\\news\\arc_pw_2006\\engps2006_1.htm (similar project)
- Pipe Shoes, Guides and Anchors
- Figure 700 chrome-moly shoe for an 18" pipe used to support high temperature lines at a power plant in Mexicali, Mexico The shoe's length is 12" and the pipe centerline distance was maintained at 17 3/8" from the bottom of the shoe. The clamp was designed at 1065°F and the load was designed for 6965 pounds. The base and clamp plates are made of A387 GR.22 plate material and the u-bolt parts are made of A193 GR.B7 bar stock . --Utilizes stock design with various materials --Allows support use in extreme environments http://www.pipingtech.com/news/arc_pw_2002/sacs2002_02.htm (2-22-2002)
- Adjustable pipe stands designed to support ductile iron pipe Due to ductile iron pipes having non-standard diameters, each of the supports were custom fabricated per the customers’ requirements regarding pipe diameter and elevation. All the supports were fabricated from carbon steel with an HDG finish and designed to provide nine inches (+/- 4.50") of adjustment and each support has an 11" x 11" base plate. They will be used on horizontal piping and will be attached at their base to pre-case concrete pedestals. Each base plate has been pre-drilled to accept anchor bolts provided at the site. The pipe stand’s threaded adjustment column will allow field personnel to adjust the height of each support. They can also accurately place the pipe at the required elevation without using shims or modifying the concrete pedestal. --Different types allow fit-up to different pipe attachments
- 24" pipe shoe with clamps specially designed and fabricated during a planned plant outage Instead of the normal delivery time of 3-4 weeks, Piping Technology & Products, Inc. finished this project in just one week. This pipe shoe with clamps was designed for 12,900 lb. vertical This 1" thick carbon steel pipe shoe was designed to handle 650°F and has a PTFE, 25% glass filled slide plate installed to allow for axial movement. Shoe/guide
- Fabricated with A-36 carbon steel and permali block insulation. The carbon steel is hot-dipped galvanized for protection and longevity of the cold shoe. The permali block insulation, between the base plate and the saddle, functions to insulate the supporting structure from extreme cold temperatures of the pipe. These cold shoes are designed for pipes ranging in size from 6" to 14". The assemblies are capable of loads ranging from 194,000 lb. to 291,000 lb. --Anchor support where-in the base is solidly attached --Cradle is secured to base by means of bolts shown --Dual purpose configuration: 1.) Provides anchor support 2.) Insulates surrounding structure from pipe operating temperature http://www.pipingtech.com/news/arc_pw_2008/preis2008_02.htm That concludes this section… now we will go over the different types of shock control devices.
- Types of Shock Control Devices Sway Braces—use spring coils inside there Sway Struts—rigid support Hydraulic and Mechanical Snubbers—passive restraints using either fluid or mechanical means to lock
- These PT&P sway braces are fabricated from carbon steel and measure 126" from pin to pin. They use an integral piston assembly with guide to eliminate any buckling and/or misalignment during extension and compression . The sway braces are designed for 10 1/2" of travel and a load of 1,500 lb. A combination of standard spring coils is used to achieve the required spring rate of 150 lb./in. Prior to shipment, a test was performed using a hydraulic ram. This test simulated actual field conditions and allowed the sway brace to move through the entire travel range in both compression and extension modes. --To be used in horizontal position --Buckling was a major concern because of extended overall length --Telescoping piston assembly was developed to eliminate threaded rod connections --Swivel rod ends were employed for tight clearances http://www.pipingtech.com/news/arc_pw_2009/snubs2009_01.htm (W:\\digital_camera\\2008\\August\\Sway Braces 94279)
- 8,000 lb. Sway Braces with Pivoting Ball Joints These special sway braces that are subject to the banana effect were designed to specific requirements for a Coker Plant in Texas. With deflection capability of up to plus or minus 9" in all directions, these sway braces are used to stabilize tall stacks. Five springs in tandem prevent binding during operation, and are necessary due to extreme length. The sway braces ranged from 70" to 144" in length and are able to absorb a piping load of up to 8,000 lb. The precision machined pivoting ball joints positioned at each end allow for freedom of movement in any unpredictable direction. Extra big coils, longer travel, flexible ball joints --Standard sway brace uses single coil with movement plus/minus 3" and maximum load = 7,200 lb.
- This project included two carbon steel sway struts with 2" adjustment capabilities for a cycle unit project. The sway struts are constructed of an 8" diameter pipe, 130 ¼" long, assembled with rod ends and brackets for an overall assembly length of 15'. The 2" adjustment capability is accompanied by a load capacity up to 128 KIPS. Sway struts are used to restrain movement of piping in one direction while providing movement from thermal expansion or contraction in another direction. Large load at 128,000 lb. (largest standard load is 68,000 lb.)
- Hydraulic snubber with 140,700 lb. load capacity for a power plant in Turkey Adjustable type snubber with two rear brackets Design Temperature: 375 ° F Design Pressure: 1,750 PSIG Stroke: 6 " --High load capacity --Standard practice Provide fixed end with no adjustment --Able to accommodate request to provide some (minimum plus/minus 2”) adjustment for site installation http://www.pipingtech.com/news/arc_pw_2008/snubs2008_01.htm
- 2 snubbers used in tandem (tandem snubber config.) Load range: 15,000 to 120,000 lb. --External housing developed to hold two mechanical snubber assemblies working in tandem --Maximum stroke for individual snubbers = 6" --Application shown required 10" overall stroke --Tests were conducted to confirm individual snubber mechanisms would “lock” simultaneously even at different positions with Re: individual cylinder position That concludes the section on shock control devices… if you have questions about snubbers, sway braces or sway struts, we have a panel of experts standing by, eager to answer your questions.
- Types of Support Assembly Components Pipe Clamps, Riser Clamps, Hold Down Clamps, Hardware, Rods and U-Bolts Pipe Hangers, Clevis Hangers, Beam Attachments, Saddle Supports and Coverings
- 68,000 lb. load custom clamp This custom clamp will be used in conjunction with a hydraulic snubber to restrain pipe movement during extremely high disturbances and is designed to support the pipe where two heavy duty flanges join. The yoke, lugs, and strap sections of the clamp are carbon steel, and the clamp bolts and load bolt/pin are stainless steel. The outer diameter of the clamp section is 16", and the inner diameter is 10". The upper lugs are fabricated from ¾" thick plate with a 2 ¼" diameter load bolt. --Application where installation procedure dictated configuration of the clamp --Distance between yoke bolts allowed clamp to fit over 4" pipe and slide into position at flanges
- 8 sets of custom riser clamp assemblies designed for an oil rig in the Gulf of Mexico Fabricated from API 2H grade 50 carbon steel Designed to support vertical pipe lines on an offshore platform Each set equipped with a neoprene lining, consists of two clamps and a clamp stand Several coats of marine paint finish were applied to the assemblies to prevent corrosion due to high salt water content and open air exposure --Tandem clamps on single base --All components coated for underwater service --Bolting material formulated for corrosive environment
- Structural pipe hangers designed for an ongoing project to rebuild the San Francisco-Oakland Bay Bridge. The pipe hangers are made out of A-36 carbon steel and galvanized to withstand corrosion from the ocean waters and rough winds. These supports will be welded to Pipe Shields’ C Model Anchor Plates, which are set in a cast concrete to the bottom cavity of the bridge. These supports utilize friction holding devices known as MegaLug®, which permit attachment to the pipes without welding. They were designed and fabricated to include improvements in regard to strength and durability to withstand high loads during earthquakes and other seismic events. --Act as riser type clamps supporting vertical piping --Eliminates lugs welded to pipe ductile iron piping --Flange incorporated into design permits attachment via “MegaLug” which bites into ductile iron pipe
- 42" hold down with wedge support designed to control and reduce pipe vibration at an LNG plant in Egypt. The entire assembly is PTFE, 25% glass filled bonded to A36 carbon steel along with a fabric pad which is exceptionally suited for vibration impact and declination. --Non standard hold down assembly wedges provide different B.O.P --Application where non standard slide plates have been utilized --Eliminate steel backing plate and bonded PTFE, 25% glass filled slide plate material directly to angled and curved surfaces That concludes the section on support assembly components… next up is slide plates…
- DO NOT, DO NOT, DO NOT….. DO NOT SAY TEFLON…. !!!!! Slide plates are a very cost-effective way to allow for movement of mechanical systems for very high temperatures and cryogenic temperatures as well. They are also suited for both high and low loads. - We supply slide plates for a variety of applications including support of piping, heavy equipments such as pressure vessels, and structural members. The plates provide a surface with a low coefficient of friction which can be attached to a supporting structure. This combination provides support while simultaneously allowing an object to move or slide freely along the supporting structure. Shown here are the five main materials used: PTFE, 25% Glass Filled, Bronzphite®, Graphite, Marinite and Stainless Steel (SS—talk about different sizes) - Sandwich Concept: Most designers use the “sandwich” concept, which is simply two slide plates one on top of another. Each slide plate is composed of two components: 1) metal backing plate, which is the “bun” of the sandwich and 2.) a low coefficient friction material which is bonded to the metal backing plate - The illustration on the bottom-right shows a slide plate that is welded on top of one steel beam supporting another steal beam. When the top beam moves, it slides across the surface of the plate without contacting the supporting beam. The top half of the “sandwich” is bonded to the sliding beam, bottom half of “sandwich” to the supporting beam. DO NOT, DO NOT, DO NOT….. DO NOT SAY TEFLON…. !!!!! If you need it…. NOTE: PTFE, 25% Glass Filled: PTFE is the abbreviation for Polytetrafluoroethylene. PT&P uses PTFE filled with 25% Glass Fibers (by weight). Fillers improve the strength and durability.
- DO NOT, DO NOT, DO NOT….. DO NOT SAY TEFLON…. !!!!! Starting from the left, you see F-Type variable spring supports that have PTFE, 25% glass filled slide plates welded to the top of the load flange. The slide plates will allow for translational movement. Next is forty-three inch (43 " ) angled pipe shoes with a slide plate welded to a carbon steel plate, then welded onto the shoe to allow movement of the pipe during expansion and contraction. And lastly, you see a 200 U-Type constant spring support with a slide plate welded to the load flange to reduce the friction between the constant load flange and the structure above the support. This constant also includes slide plates between the table and the frame of the constant to reduce the friction on the table and improve constant deviation.
- Left: Bronzphite is best suited for high loads, low velocity applications and in places where the use of oil or grease is undesirable or unfeasible. Bronzphite is maintenance free and self lubricating where the lubrication does not deteriorate with wear; therefore, it has a high wear resistance; as well as, prevents accumulation of dust and debris. Advantages include: self-lubricating components and maintenance free (Explain the circular design of the graphite) The Bronzphite® slide plates shown here are constructed from graphite and phosphorus bronze with dimensions ranging from 3"x 3" to 6"x 36". They are designed for up to 500ºF and a total travel of up to 30". The solid graphite inserts are arranged in various patterns and sizes to meet customer specifications. This type of slide plate is best suited for high loads, low velocity applications and in places where the use of oil or grease is undesirable or unfeasible. Right: Here you see a project we completed that included 75 pipe shoe and Bronzphite® slide plate assemblies for an oil refinery in Texas. Each assembly consists of two pipe clamps, a base plate and a 3" x 3" Bronzphite® slide plate with graphite impregnated bronze. The shoes ranged in sizes from 18" to 24" and are fabricated from A387 alloy steel. Load capacity: 13,900 lb. The are designed for 965ºF and 2" of horizontal travel.
- 9 ½ feet long The top sheet of graphite measures a ½ " x 11 ½ " x 115 ½ " This order also called for a bottom sheet of graphite with the same dimensions but only ¼ " thick Each individual graphite sheet is bonded to a hot dipped galvanized backing plate A ½ " lip all around for full welding Designed for 1,000 ºF
- Marinite is a higher density insulation formed from Calcium Silicate, which is light weight, has a low bulk density, a low thermal conductivity, a high temperature and chemical resistance. We generally provide Marinite as a rectangular slide plate assembly consisting of a Marinite insulator block sandwiched between a stainless steel top and bottom plate. Benefits Include: 1. Facilitates use of PTFE, 25% glass filled material on high-temperature lines and 2. Marinite being a high load bearing insulation material is ideal for the dynamic loading conditions. Marinite allows for the use of PTFE, 25% glass filled, as the sliding surface for lines with high operating temperatures and high dynamic loading. It protects the PTFE, 25% glass filled material by acting as a barrier to heat transfer. - It has so far been used for power plants in high energy systems like SHP and SIP. It could potentially be used wherever there are top, bottom or lateral movements the point support. - Compact configuration providing sliding and insulation properties
- Examples of Pre-Insulated Pipe Supports Cold Shoes: for cryogenic applications Hot Shoes: for high temperature applications
- Designed for a petrochemical plant in Puerto Rico Nominal pipe size ranges between 16 " and 24 " Materials: carbon steel with a stainless steel jacket Insulation material: polyurethane foam Design temperature between -270 ° F and 85 ° F Load range between 5,000 lb. and 11,900 lb. Each color means something different (different density—some are stronger and some are better insulators) http://www.pipingtech.com/news/arc_pw_2008/preis2008_01.htm
- 36 " diameter insulated pipe anchors that include base stops to prevent lateral movement of the anchor The design of the insulated stop plates allows the anchor to withstand 63,000 lb. The use of Polyurethane insulation allows for operating temperatures down to -300°F --Provides vertical support --Integrates pipe lug b/w consecutive layers of insulation to prevent lateral pipe movement --Insulation density monitored to insure compressive strength adequate for 63,000 lb/in 2 stress loading
- Injection-molded anchors for a LNG plant in New Brunswick, Canada These supports are used in a regassification terminal and are designed for -29°C ambient and -196°C fluid temperatures. The polyurethane foam insulation is injected into a mold with a pipe spool in place to ensure maximum fit. The pipe anchors are made from 516 Grade 70-N carbon steel. These supports were put through Finite Element Analysis and inspected by our Quality Control Department. --Poured in place anchor completely self contained --Utilizes portions of pipe spools supplied by customer --Large axial load capability developed --Act as anchor in all three dimensions --Required that special mixing procedures be developed to insure that correct volume and mixture of foam could be injected into mold structure (could not utilize sections)
- Designed for a pipe size of 84", this pre-insulated pipe support is able to withstand temperatures up to 1,220ºF. It is a wide base sliding hot shoe with up to 2" of axial travel and 3" of lateral travel. It can support loads up to 33,721 lb. and the support itself weighs approximately 1,900 lb. This high temperature pre-insulated pipe support will be utilized in a styrene plant. --Utilizes sections sandwiched together of different insulating materials --Louder half uses stronger/denser material
- Our U.S. Bellows division provides wide variety of expansion joint products and services. The general categories we supply can be described by the materials used and the type of movement provided. We also provide Emergency Replacement Services for time constrained issues that may arise. Pictured here are the different types of thin wall metallic expansion joints: - Single bellows expansion joints are the most economical. They absorb small amounts of axial, lateral and angular movements, and can deflect in any direction. - Hinged joints can bend in a single plane and are designed to accept the full pressure thrust. - A gimbal joint is similar to a hinged joint, except that instead of being limited to deflection in only one plane, it can accept bending or angulation in any plane. - Our tied universal expansion joint consists of two bellows separated by a pipe section or spool. The primary purpose of this arrangement is to have a unit which will accept large amounts of lateral deflection. The amount of lateral deflection they can accept is a function of the amount of angulation each bellows can absorb and the distance between the bellows. - On the second row, we have an elbow pressure balanced joint which retains and balance the pressure thrust so that main anchoring of the pipe or adjacent equipment is not required, and forces and movements on attachment flanges of delicate equipment, such as turbines, are kept to acceptably low levels. - Next, you see an inline pressure balanced expansion joint. When axial deflections exist, and anchoring is impractical for structural or economic reasons, such as high in the air or short straight pipe runs between two large vessels, the in-line pressure balanced expansion joint is a powerful solution to a difficult design problem. - Externally pressurized joints are used when large amounts of axial deflection are required in piping systems of relatively high pressure. Bellows which are internally pressurized have limitations due to the phenomenon called squirm. - A toroidal convolution consists of a circular tube (or totus) wrapped around weld ends or pipe ends having a gap at the I.D. to permit axial stroke. Most toroidal bellows are hydraulically formed which requires high pressure. Others are free formed, similar to blowing up a balloon. More accurate convolution shapes may be formed into toroidal dye cavities. Since this forming pressure is high, pressure resistance is also high.
- Shown here are additional expansion joint categories starting with the thick wall, flanged and flued head expansion joint. This type of expansion joint is cost-effective for large-diameter piping systems which operate at low pressure. Shown next is a slip-type, which is commonly used when the primary problem is large axial movement. Next is a rectangular metal expansion joint with rounded corners. Since there are no standard duct sizes, and due to the wide range of pressure and temperature combinations, each rectangular metal expansion joint is custom-engineered to provide the most economical design that will not sacrifice the integrity of the joint or the system in which it is installed. Our fabric joints are often used in ducts which carry hot gases at low pressures. Next to it, you see a neoprene fabric joint, which are mostly used in low temperature water applications. Lastly, is the clam shell bellows which is a thin wall metallic expansion joint.
- 18 " 304 stainless steel expansion joints These custom designed expansion joints have machined flange faces with a specially designed gasket groove They are welded to A.W.S. Standards and required critical spring rates Design conditions include: - .5" axial extension and 1.5" axial compression - 176 PSIG at 500 ° F We manufactured and tested these expansion joints to the customer specifications, EJMA Standards and U.S. Bellows, Inc. Quality Standards Stringent testing requirements included: - A helium leak test to a leak rate of 1 x 10-7 (Pa * m3/second) due to their critical service condition requirements - The bellows longitudinal seams were 100% x-rayed - And a dye-penetrant exam was performed
- 43" hinged expansion joints with 5" refractory lining These expansion joints are part of FFC stand-pipes in a synfuels plant. Each expansion joint is fabricated of 2-ply Inconel bellows and ¾" wall pipe consisting of 2" thick attachment rings. After fabrication, the expansion joints were pneumatically tested and inter-plies tested. The bellows and pipes were 100% x-rayed and PMI tested. Thermal and structural Finite Element Analysis (FEA) was performed on the expansion joints to ensure the product is structurally sound and determining the thermal profile helps to prevent polythionic corrosion on the bellows. Design calculations were performed for all hardware including lug rings, gussets, hinge plates and pins.
- 30 " spent standpipe catalyst metallic expansion joint lined with resistant refractory lining to prevent erosion. The pentographic linkage is designed to distribute the axial compression between the two bellows and support the weight of the center pipe between the bellows. The flanges are 321 stainless steel and carbon steel. The design pressure is 19 PSIG and the design temperature is 1,050°F. This expansion joint was 100% x-rayed and pneumatically tested at 55 PSIG.
- U.S. Bellows refurbished two pressure balanced expansion joints with a quick turnaround for a power generation plant during outages. The first 54" outside diameter expansion joint leaked from a crack in the bellows causing an unscheduled power plant outage. This particular expansion joint was fabricated for a high pressure turbine crossover piping for steam service of 97 PSIG at 634°F. The 27' long, 27,000 lb. expansion joint was refurbished in less than 4 weeks. This was made possible by utilizing dedicated employees working overtime 6 days a week. The 321 stainless steel bellows and carbon steel root rings were replaced. The outside cover bolts were removed and new bolts were installed. The second expansion joint was also for a high pressure turbine that was replaced during a planned outage. This expansion joint came in on October 30, 2006 and was ready to ship November 20, 2006. Overall length and center line to center line length were maintained to ensure easy installation. Both expansion joints were dye-penetrant tested and hydro-tested at 146 PSIG.
- 128 " x 229 " rectangular fabric expansion joints Fabricated with a three layer belt consisting of an inner layer of silica cloth, a middle layer of mineral wool and an outer layer of PTFE/coated fiberglass. The frame includes an insulation blanket of mineral wool and stainless steel wire mesh. The frame and liner are fabricated from ¾ " thick 304 stainless steel and each expansion joint’s frame and liner welds were dye penetrant tested before shipping.
- Thick Wall Flanged and Flued Head Expansion Joints U.S. Bellows, Inc. designed and fabricated two 78" I.D. x 110" O.D. and two 6" I.D. x 68" O.D. thick wall flanged and flued head expansion joints. All four expansion joints were fabricated from ¼" thick ASTM A516 grade 70 carbon steel plate. The expansion joints were cold formed and heat treated to customer requirements. The external surface of the expansion joint was painted with one coat of shop primer. The weld ends of the expansion joint are beveled, and drainage plugs are installed in the crest of the bellows. The bellows long weld seams were 100% dye penetrant and 100% x-ray tested. U.S. Bellows provides 100% customer satisfaction in terms of quality and delivery. That concludes the section on expansion joints… if you have questions on a particular type of expansion joint, we have our expansion joint expert standing by, eager to answer your questions.
- That concludes our Product of the Week Showcase Webinar…. I hope everyone enjoyed the presentation and as a reminder, we have a staff of experts for each product category standing by to answer any questions you may have. You can just chat them now while in session until the end of the hour, you can also send them to us by e-mail at info@pipingtech.com, or you can visit our discussion forum and post your question there, just click on the blue graphic labeled “DISCUSSION FORUM” on the left hand side of our home page at www.pipingtech.com