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Tied Universal Expansion Joint for Service in an Acid Regeneration Plant
May 7, 2012

Universal Tied Expansion Joint, 48" Dia. and 141" OAL, for Service in an Acid Regeneration Plant

A tied universal expansion joint was custom designed for service in an acid regeneration plant in Louisiana. It is 48″ in diameter, 141″ in overall length and designed for 1″ axial movement, 2-1/2″ lateral movement and .33° angular rotation. The expansion joint is fabricated with 310 stainless steel bellows, and 301 SS liner, duct, flanges, transition duct and covers. It was designed for 10 psig at 1150°F, and was dye penetrant examined, hydro-tested at 15 psig, and the bellows and pipe longitudinal weld seams were 100% x-rayed.

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Fabric Expansion Joints Designed for a Lignite Coal Processing & Gasification Plant
April 23, 2012
Fabric Expansion Joints Designed for a Lignite Coal Processing & Gasification Plant
Fabric Expansion Joints Designed for a Lignite Coal Processing & Gasification Plant  

A total of thirty-six fabric expansion joints were custom-designed for a lignite coal processing and gasification plant in Mississippi. They are 12″ diameter, 14″ overall length and designed for 1/4″ axial movement and .8quot; lateral movement. The expansion joints are fabricated with carbon steel flange ends, stainless steel clamps, and a PTFE coated fabric belt. They are designed for hot air circulation flow at 600°F and a pressure of 30″ water column.
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12″ Dia. Universal Expansion Joints with Stainless Steel Bellows
March 26, 2012

12" Dia. Universal Expansion Joints with Stainless Steel Bellows
These universal metallic expansion joints were custom designed for a chemical plant in Texas. They are fabricated entirely from stainless steel with 304 stainless steel bellows. The expansion joints are 12″ diameter, 77-1/2″ long and designed for 4-1/2″ axial movement and 2″ lateral movement. They were designed for 200°F and 100 psig. Each unit was 100% dye penetrant examined and hydrotested prior to shipment.

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102″ Dia. Tied Universal and Hinged Expansion Joints
March 12, 2012

102" Dia. Tied Universal and Hinged Expansion Joints
102" Dia. Tied Universal and Hinged Expansion Joints

Type:  Single Expansion Joint
Size:  102″ diameter, 225″ long, 102″ diameter, 71″ long
Material:  carbon steel with 316 stainless
Design  8.2″ lateral movement, 0.76° angular rotation, 250°F at 7.25 psig
Testing:  100% X-Rayed | Dye-penetrant | Soap/Air-tested

U.S. Bellows designed and fabricated tied universal expansion joints and single hinged expansion joints for a power plant in Canada. All the units were fabricated from carbon steel with 316 stainless steel bellows. The universal tied joints are 102″ diameter, 225″ long and are designed for 8.2″ lateral movement. The hinged joints are 102″ diameter, 71″ long and designed for 0.76° angular rotation. Each expansion joint can withstand temperatures up to 250°F at 7.25 psig. The bellows and pipe long seams were 100% x-rayed, and all the welds were 100% dye penetrant tested. A soap and air test were performed prior to shipment.

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81″ Long Rectangular Fabric Expansion Joint for an Offshore Oil Extraction and Natural Gas Project
February 21, 2012

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A total of three rectangular fabric expansion joints and six round fabric expansion joints were custom designed for an offshore oil extraction and natural gas project. The rectangular joints are 56″ x 81″ I.D. x 25″ O.A.L. and the round joints are 105″ dia. x 24″ O.A.L. 309 stainless steel was used for the duct, 310 for the liners, 316 for the covers, 321 for the studs, 309 for the flanges. The fabric belt was a three layer belt with an inner layer of glass cloth, a layer of Kaowool and an outside layer of reinforced PTFE. The expansion joints were designed for 1 psig at a temperature of 1100°F. The rectangular joints were designed for 2″ axial compression, a 1″ extension, and a 1″ lateral offset. The round joints were designed for 4″ axial compression, a 1″ extension, and a 0.5″ lateral offset. All welds were 100% dye-penetrant examined prior to shipment.

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84″ Diameter Duct Work and Fabric Expansion Joint Assemblies
February 6, 2012

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The two assemblies shown, a mitered elbow duct work and fabric expansion joint and duct work assembly, are designed for a sulfuric acid plant. Both assemblies are fabricated from 1/4″ thick 304L stainless steel. They are designed for a 15″ water column with a temperature of 180°F, axial compression of 3/4″, and lateral movement of 3/4″. A dye penetrant examination is performed on all welds prior to shipment.
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Rectangular Fabric Expansion Joint For High Air Circulation Flow
January 9, 2012

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This rectangular fabric expansion joint is designed for high air circulation flow for an air cooling loop duct in a power plant. It measures 81″ L x 18″ W x 16″ face-to-face, and is fabricated with stainless steel angle, frame ends and internal liner. The fabric belt material is reinforced silicone fabric cloth, which can withstand temperatures up to 550°F. This expansion joint is rated for axial movement of +/- 1″ with a 1/2″ lateral offset. A 100% dye-penetrant test on all welds was conducted prior to a quality assurance inspection prior to shipment.

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56 Externally Pressurized Expansion Joints for a Cooling System
December 27, 2011

56 Externally Pressurized Expansion Joints for a Cooling System

The externally pressurized expansion joints are 37.5″ in diameter and 36″ face-to-face. The bellows are 304 stainless steel, and the flange and ring are carbon steel. This expansion joint is rated for 232 psig with 5″ axial compression and temperatures up to 189°F. All bellows longitudinal welds were 100% x-rayed, all carbon steel welds were dye penetrant examined and each unit was hydro-tested to 348 psig. A total of 56 units were fabricated for a cooling system in a new university for women in the middle east

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High Temperature Fabric Expansion Joint Designed for an Exhaust Duct
November 28, 2011

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This rectangular fabric expansion joint will be used in an exhaust duct in a power plant. It measures 136″ L x 54″ W x 12″ face-to-face and is fabricated with stainless steel angle, frame ends, and internal liner. The fabric belt material is PTFE coated glass cloth, which is low friction and high in tear/crease resistance and tensile strength. This expansion joint is rated for an axial movement of 1-1/2″ with a lateral offset of 1/2″ and maximum temperatures up to 600°F. A quality inspection was administered, including a 100% dye-penetrant test prior to shipment.

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A Custom Spring Support Was Designed Using a Metal Bellows Instead of a Spring Coil
October 17, 2011

A Custom Spring Support Was Designed Using A Metal Bellows Instead Of A Spring Coil

A custom spring support was designed using a metal bellows instead of a spring coil. The bellows were fabricated from stainless steel because it will be used in a highly corrosive, off-shore environment. By utilizing the metallic bellows, it was much easier to customize for short-run production, produce variations of spring rate, and develop a high load-carrying capacity. An added benefit of using the bellows instead of a custom coil was that it reduced fabrication time by half. The rolled plate shown on the left is welded to the structural pipe on the platform and a riser clamp was attached on the right

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16″ Diameter Externally Pressurized Expansion Joints for an Oil Refinery
October 10, 2011

16" Diameter Externally Pressurized Expansion Joints for an Oil Refinery

These externally pressurized expansion joints are 16″ in diameter and 60-1/4″ face-to-face. The bellows are fabricated from 304 stainless steel, and the rest of the expansion joint is fabricated from carbon steel. They are custom-designed for 8″ axial movement and 150 psig at 176°F, with a spring rate of 2,152 lb./in. Each expansion joint was hydro-tested, radiographic tested, and dye penetrant tested prior to shipment.

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42″ Diameter Neoprene Fabric Expansion Joint for a Generator Cooling Fan in a Power Plant
September 12, 2011

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This neoprene fabric expansion joint is 42″ I.D. by 7-3/4″ face-to-face and is designed for a generator cooling fan in a power plant. The angle frame ends are fabricated from carbon steel, and the neoprene fabric belt is fastened to the angle flanges by two stainless steel clamps. The expansion joint absorbs vibration between the air supply duct and the cooling fan. A 100% dye-penetrant exam was performed on the welds of the angle iron flanges prior to shipping to the customer ahead of schedule.

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Tied Universal Expansion Joints Designed for a Power Generation Plant in Texas
August 22, 2011

Tied Universal Expansion Joints
This week’s feature is on tied universal expansion joints designed for piping in a power generation plant in Texas. They are 6″ in diameter, 60″ in length, and will be used in a hot air application. The pipe, lugs and weld ends are fabricated from carbon steel, and the bellows are 321 stainless steel. The expansion joints are designed for 100°F at 3 psig and are capable of 6″ lateral movement. Each unit was 100% dye penetrant tested and soap and air tested prior to shipment

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Hinged Universal Expansion Joint and Duct Work Assembly
July 25, 2011

Custom Universal Expansion Joint and Duct Work Assembly
This week’s featured product is on a hinged universal expansion joint and duct work assembly custom designed for an exhaust duct application in a power plant in Kenya. The hinge hardware was fabricated from carbon steel, while the rest of the unit was fabricated from 316 stainless steel with Inconel 625 bellows. An F-type variable spring was also provided for this project and will be used to support the center spool between the two elbows. The duct work with expansion joint is 36″ in diameter and the distance between the centerline of the two 90 degree elbows is 240″. It is designed for 20 psig at 115°F and 1/2 degree of angular movement. The entire assembly was 100% dye penetrant tested and a soap and air test was performed prior to shipment.

Custom Universal Expansion Joint and Duct Work Assembly                                                                                                      F-Type Variable Spring

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72″ Universal Gimbal and Single Hinged Flanged and Flued Head Expansion Joints
July 11, 2011

72" Universal Gimbal and Single Hinged Flanged and Flued Head Expansion Joints

U.S. Bellows designed and fabricated a 180″ long double gimbal expansion joint with a 90° elbow and flanged and flued head bellows, and a 114″ long single hinged expansion joint with flanged and flued head bellows. After performing a pipe stress analysis on the line, it was determined that spring supports were necessary, so F-Type variable spring supports were also provided for this project and shipped with the expansion joints.

All material in contact with the service fluid is fabricated from 304 H stainless steel and all external hardware is 304 stainless steel. The expansion joint bellows is designed for 5° angular movement and 1100°F at 10 psig. A spot x-ray test, soap and air test, and 100% dye penetrant examination on all welds were performed prior to shipment

 

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Universal Rectangular Expansion Joint for a Mining Operation
June 27, 2011

Universal Rectangular Expansion Joint for a Mining Operation
This universal rectangular expansion joint is fabricated entirely of carbon steel with COR-TEN™ steel bellows for a mining operation in the mountains of Chile. COR-TEN™ steel is high strength and ideal for resisting corrosion. It measures 73-1/4″ L x 52″ W x 96″ H, weighs 2,700 lb. and was painted with universal shop primer. This expansion joint was 100% dye penetrant tested, and a soap and air test was performed prior to shipment

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90″ Universal Flanged and Flued Head Expansion Joint and Duct Work Assembly
June 3, 2011

90 inch Universal Flanged and Flued Head Expansion Joint and Duct Work Assembly
This universal flanged and flued head expansion joint and duct work assembly is designed for a 90″ diameter line. It includes slotted hinge plates installed across the bellows to carry the weight of the duct between the bellows and equalize the axial compression between the two bellows. The flanged and flued heads, duct and weld ends are fabricated from 304 H stainless steel. The expansion joint is designed for 2″ axial compression, 2-1/2″ lateral deflection, and 1150°F at 5 PSIG. A spot x-ray test, soap and air test, and 100% dye penetrant exam were performed prior to shipment

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