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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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
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
This tied universal expansion joint with a 45 degree mitered elbow will be installed in a flue gas system. The assembly is 60″ in diameter and 215″ long. The pipe is fabricated from A 516 GR 70 carbon steel and the bellows are Inconel® 625 LCF. The bellows were 100% x-rayed and hydro-tested to 15 PSIG prior to shipping.
This tied universal expansion joint with a 45 degree mitered elbow will be installed in a flue gas system. The assembly is 60″ in diameter and 215″ long. The pipe is fabricated from A 516 GR 70 carbon steel and the bellows are Inconel® 625 LCF. The bellows were 100% x-rayed and hydro-tested to 15 PSIG prior to shipping.
The single flanged metallic expansion joint was manufactured from 304 stainless steel bellows with carbon steel flanges. It has a diameter of 20″ and an overall length of 15″. It will be used in an exhaust duct application in a power plant. A hydro-test was performed prior to shipping to Orlando, Florida.
The single flanged metallic expansion joint was manufactured from 304 stainless steel bellows with carbon steel flanges. It has a diameter of 20″ and an overall length of 15″. It will be used in an exhaust duct application in a power plant. A hydro-test was performed prior to shipping to Orlando, Florida.
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
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
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.
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.
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.
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.
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.
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.
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.
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.
This inline pressure balanced expansion joint is fabricated from ASTM A-240 321 SS bellows and ASTM A-105 carbon steel flanges. Due to its highly corrosive application, all of the internal surfaces are coated with a PTFE lining to resist corrosion. The expansion joint is designed for 51 PSIG at 167°F. and was hydro-tested at 77 PSIG prior to shipping.
This inline pressure balanced expansion joint is fabricated from ASTM A-240 321 SS bellows and ASTM A-105 carbon steel flanges. Due to its highly corrosive application, all of the internal surfaces are coated with a PTFE lining to resist corrosion. The expansion joint is designed for 51 PSIG at 167°F. and was hydro-tested at 77 PSIG prior to shipping.
This 30 foot long tied universal thick wall expansion joint is fabricated from carbon steel with 316 stainless steel bellows. The bellows are fabricated from 1/4″ thick flanged and flued heads. It is designed for an axial movement rate of 1/2″ with a lateral movement rate of 1-13/16″. The expansion joint was 100% x-ray tested and air & soap bubble tested prior to shipping.
This 30 foot long tied universal thick wall expansion joint is fabricated from carbon steel with 316 stainless steel bellows. The bellows are fabricated from 1/4″ thick flanged and flued heads. It is designed for an axial movement rate of 1/2″ with a lateral movement rate of 1-13/16″. The expansion joint was 100% x-ray tested and air & soap bubble tested prior to shipping.
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.
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.
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.
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.
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.
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.
The bellows and flow liner are 316 stainless steel, while the rest of the expansion joint is carbon steel. These expansion joints are capable of 5.3″ axial compression, 2.0″ lateral, and 5° of angular movement. They are designed to operate at 25 PSIG with temperatures up to 150°F. A hydro-test and X-ray test was performed prior to shipment.
The bellows and flow liner are 316 stainless steel, while the rest of the expansion joint is carbon steel. These expansion joints are capable of 5.3″ axial compression, 2.0″ lateral, and 5° of angular movement. They are designed to operate at 25 PSIG with temperatures up to 150°F. A hydro-test and X-ray test was performed prior to shipment.
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.
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.
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.
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.
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.
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.
