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Universal Expansion Joint with 5″ Thick Refractory Lining for a Styrene Plant in Thailand
May 23, 2011

 

universal expansion joint with 5" thick refractory lining

universal expansion joint with 5" thick refractory lining

This universal expansion joint is designed with 5″ thick refractory-lining for a 52″ pipe in a Styrene Plant in Thailand. It measures 154″ long and is fabricated with ASTMA 304H stainless steel pipe ends and Incoloy 800H bellows. The expansion joint is designed for a lateral movement of 6.982″ with a design pressure of 30 psig at 1085°F. The bellows and pipe longitudinal seams and the pipe circumferential welds were x-rayed. All welds were also dye penetrant examined. A pneumatic test between the plies at 15 psig and the complete expansion joint at 45 psig was performed. The carbon steel surfaces were coated with a special three-coat paint system after testing and prior to shipment.

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Duct Work for Absorbing Tower Piping in an Acid Plant
May 9, 2011

Duct Work for Absorbing Tower Piping in an Acid Plant
This duct work was fabricated with mitered elbows from SA-516 grade 70 carbon steel, and was designed for absorbing tower piping in an acid plant. It has a 72″ outside diameter and measures 23″-2/4″ from the centerline, elbow to elbow. This assembly was only a single portion of a duct work system that included 36″, 48″ and 60″ diameter sections of fabricated duct work. The duct work was fabricated with roundness tolerance of +/- 1/8″. A 100% dye penetrant test, soap and air test, and spot x-ray testing of all pipe circumferential and long seam welds was performed prior to shipment.
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92″ Double Hinged Reinforced Expansion Joint for Water Service in Canada
April 25, 2011

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U.S. Bellows, Inc. designed a double hinged reinforced expansion joint for a 92″ diameter pipe in a water treatment plant located in Canada. The bellows, root rings and collars are fabricated from 321 stainless steel. The weld ends and hinge hardware are fabricated from carbon steel. This expansion joint was designed for 100 PSIG at 300°F with 4° angular movement for each bellows. The bellows long seams and longitudinal pipe welds were 100% x-ray examined, and a hydro-test at 150 PSIG, along with a 100% dye penetrant test for all welds was performed prior to shipment.

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78″ Fabric Expansion Joint and Duct Work Assembly with a 90° Elbow for a Sulphuric Acid Plant
April 11, 2011

78" Fabric Expansion Joint and Duct Work Assembly with 90° Elbow for a Sulphuric Acid Plant

U.S. Bellows designed and fabricated a 78″ fabric expansion joint and duct work assembly with a 90° elbow for a sulphuric acid plant in Louisiana. A stress analysis was performed to determine thermal movements and spring supports, loads and travel.

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The ducts are fabricated from carbon steel and are 30″ long. The expansion joint is designed for 750°F at 5 PSIG with 2.5″ lateral deflection (cold preset) and 2″ axial compression. Cradle supports and a “big ton” spring support were also fabricated for this project.

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48″ Tied Universal Expansion Joint with Two-ply Bellows
March 7, 2011

48" Tied Universal Expansion Joint with Two-ply Bellows for an Oil Refinery in Louisiana

This tied universal expansion joint will be installed in an oil refinery in Louisiana. The assembly is 48″ in diameter and 150″ long. The bellows are fabricated from two plies of Inconel 625 LCF with stainless steel mesh between the plies and the weld ends and all hardware are A 516 GR 70 carbon steel. The design temperature is 500°F at 38 PSIG with 5″ lateral movement. The bellows were 100% x-rayed and hydro-tested to 76 PSIG. A pneumatic test between the plies at 15 PSIG was performed prior to shipping.

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66″ Hinged Expansion Joint Designed for Gas Service in a Sulphuric Acid Plant
February 8, 2011

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This single hinged expansion joint is designed for sulphur dioxide service in a sulphuric acid plant. It was fabricated with 321 stainless steel bellows and liner, and A-516 GR 70 carbon steel hinge plates and pipe. The pipe is 66″ outside diameter and 35-1/4″ overall length. The expansion joint was designed for 6° angular and 3 PSIG at 680°F. The bellows and pipe long seams were 100% x-rayed, and all the welds were 100% dye penetrant tested. A soap and air test at 15 PSIG was conducted prior to shipment.

Hinges permit angular rotation in one plane only by the use of a pair of pins through hinge plates attached to the expansion joint ends. Hinges and hinge pins are designed to restrain the thrust of the expansion joint due to internal pressure. Hinges can also be designed to carry piping loads, if specified.

Features of hinged expansion joints include:
– Angular rotation in one plane
– Eliminates pressure thrust forces
– Transmits external loads
– Prevents torsion on bellows
– No main anchors required
– Minimum guiding required
– Low forces on piping system

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66″ Diameter Tied Universal Expansion Joint for Pipe Carrying Sulfur Dioxide of Temperatures up to 1022°F
November 22, 2010

66" Diameter Tied Universal Expansion Joint for Pipe Carrying Sulfur Dioxide of Temperatures up to 1022ºF

This tied universal expansion joint is designed to carry hot gas up to temperatures of 1022°F and pressure up to 5 PSIG. It has a 66″ inside diameter and is 126″ in overall length. The design movements are 3″ lateral and 4.5″ axial compression. The bellows material is Inconel® 825 with 316 L SS flow liners, carbon steel weld ends and limit rods. The bellows and pipe longitudinal weld seams were 100% water clear x-rayed and dye-penetrant tested prior to a 5 PSIG air test. All exterier surface of carbon steel pipes are high heat aluminum painted

 

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60″ Pressure Balanced Expansion Joint with Turning Vanes for a Power Plant in Washington
November 9, 2010

60" Pressure Balanced Expansion Joint with Turning Vanes for a Power Plant in Washington
Pressure Balanced Elbow Expansion Joint

The existing pressure balanced elbow expansion joint with liners was re-designed with turning vanes to eliminate the vibration impact on the bellows. U.S. Bellows performed a computational fluid dynamics (CFD) analysis to determine the design of the turning vanes.

Flow Path Comparison
Computational Fluid Dynamics (CFD) Analysis

The turning vanes redirect the flow stream, which creates a smoother flow, thus eliminating the flow induced vibration. The bellows and liner were fabricated from 321 stainless steel and the rest is fabricated from carbon steel. An air and soap test was performed prior to shipping it to a power plant in Washington.

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26″ Pressure Balanced Elbow Expansion Joint Refurbished for an Effluent Header
October 12, 2010

26" Diameter Pressure Balanced Elbow Expansion Joint Refurbished for an Effluent Header at Cedar Bayou Plant

U.S. Bellows, Inc. received this 26″ diameter pressure balanced elbow expansion joint for a complete refurbishment. The original condition of the expansion joint can be seen in the top image while the bottom image shows the expansion joint after being refurbished in just under 3 weeks. New SA-240 type 321 stainless steel bellows were used to replace the original bellows, and the tie rods and flow liners were also replaced. All carbon steel parts were painted with a universal primer. This expansion joint measures over 17 feet long center to center of elbows, and is currently being used in an effluent header at Cedar Bayou plant.

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Rectangular Metallic Expansion Joint with Cor-ten Flanges and Refractory Lining for a FCC Duct
September 21, 2010
Rectangular Metallic Expansion Joint with Cor-ten Flanges and Refractory Lining for a FCC Duct

This rectangular metallic expansion joint is fabricated with 321 stainless steel bellows and Cor-ten flanges. The inside of this unit is lined with both vibra cast and abrasion resistance refractory. The dimensions are 65″ x 81″ x 41-1/2″ overall length and the assembly weighs 3,900 lb. All welds are 100% dye penetrant examined and the design conditions are 1400°F with 5 PSIG.

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63″ In-line Pressure Balanced Expansion Joints with Refractory Lining for a Clean Fuels Project
June 22, 2010

63" Inline Pressure Balanced Expansion Joints with Refractory Lining for a Clean Fuels Project
Inline Pressure BalancedExpansion Joints

63" Inline Pressure Balanced Expansion Joints with Refractory Lining for a Clean Fuels Project
Lined with Insulating and Abrasion Resistant Refractor
 The inline pressure balanced expansion joints were manufactured for a clean fuels project in India. They are fabricated with Inconel 625 LCF bellows and ASTM A516 GR 70 carbon steel was used for the shell. The inside is lined with insulating and abrasion-resistant refractory. The expansion joints were pressure tested with air at 15 PSIG prior to shipment.
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60″ Diameter Universal Pressure Balanced Elbow Expansion Joints
May 25, 2010

60" Diameter Universal Pressure Balanced Elbow Expansion Joints

The universal pressure balanced elbow expansion joints were fabricated with 304 stainless steel bellows and carbon steel reinforcing root rings. The expansion joints were designed for an axial compression of .25″, extension of .75″, and lateral of 1″. They have an overall length of 237″ from center line or elbow to face of the weld end. All expansion joints were designed for 100 PSIG and hydro-tested at 150 PSIG.

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U.S. Bellows, Inc. Designed and Fabricated 10′ Rectangular Fabric Expansion Joints for a Flue Gas Application in an Oil Refinery
April 27, 2010

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These fabric expansion joints are fabricated from a high temperature and corrosion resistant composite belt with A588A Corten steel duct, flanges, and covers. They are 10′ square and 24″ face to face. All welds were 100% dye-penetrant, and a soap and air test was performed prior to shipping. The expansion joints will be used for a flue gas application in an oil refinery in Texas.

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76″ Single Expansion Joints Designed with 4″ Thick Refactory Lining for Flue Gas Service
February 23, 2010
76' Single Expansion Joints Designed with 4" Thick Refactory Lining for Flue Gas Service

U.S. Bellows, Inc. fabricated several expansion joints composed of 321 stainless steel and A588-A Corten angle flanges. The expansion joints measure 76″ in diameter and have an overall length of 27¾”. Each expansion joint is also lined with 4″ thick refractory lining.

76' Single Expansion Joints Designed with 4" Thick Refactory Lining for Flue Gas Service

The bellows long seams were 100% x-rayed and dye-penetrant tested. The bellows will be used in flue gas service associated with a clean fuels project at an oil refinery.

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U.S. Bellows, Inc. Designed and Fabricated a 55′ Long by 14’6″ Rectangular Metal Expansion Joint for a Power Plant
January 26, 2010

U.S. Bellows, Inc. Designed and Fabricated a 55' Long by 14'6" Rectangular Metal Expansion Joint for a Power Plant

U.S. Bellows, Inc. fabricated two metallic expansion joints on an expedited schedule. The expansion joints were fabricated from COR-TEN ASTM 588 carbon steel and are designed for 1.2 PSI at temperatures up to 748°F. The expansion joints were designed for an axial compression of 1.5″ and a lateral resultant movement of 1.84″. The entire expansion joint was shipped to the job site in one piece. This avoided having to splice weld the expansion joint into one piece, which saved the customer countless assembly man hours in the field.

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