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U.S. Bellows custom designed an inline pressure balanced expansion joint for an ammonia and urea plant in Bolivia. The bellows and liners are fabricated from 304 stainless steel and the assembly from carbon steel. The unit is 46″ diameter and 71-3/8″ in overall length. The expansion joint was designed for 0.8″ axial movement with an operating temperature of 392°F at 114 psig. A 100% dye penetrant test, x-ray, and hydro-test were performed prior to shipment.
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| Type: | Single Expansion Joint |
| Size: | 6″ diameter |
| Material: | 304 Stainless Steel | Carbon Steel |
| Design: | 0.92″ axial movement, 0.14″ lateral movement, 400 psig |
| Testing: | 100% Hydro-tested |
U.S. Bellows designed and manufactured 6″ diameter single expansion joints for a pipeline in Texas. They are fabricated from 304 stainless steel and capable of 0.92″ axial movement, 0.14″ lateral movement and are designed for 400 psig at an operating temperature of 450°F. The assemblies include external covers to protect the bellows from outside damage during plant construction and later during maintenance. All expansion joints were hydro-tested to 600 psig prior to shipping.
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U.S. Bellows designed 8″ diameter tied universal expansion joints for a pipeline in Colorado. The bellows are fabricated from 321 stainless steel and the flanges, pipe, and tie rods are carbon steel. They are designed for a lateral movement of 5″ at 400°F and 200 psig. The lateral force to deflect the units 5″ is 116 lb. The expansion joints are rated for a 7,000 cycle life and were 100% dye-penetrant tested and hydro-tested prior to shipment.
U.S. Bellows custom designed and fabricated this 90″ diameter radius long elbow duct assembly for an ammonia plant in Louisiana. The duct assembly shown here is being sent for painting before it is shipped. The assembly was fabricated from A-516 Gr. 70 carbon steel material and designed for 16 psig and full vacuum at 302°F. A 100% dye penetrant test, and spot x-ray test of all pipe circumferential and long seam welds was performed prior to shipment.
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U.S. Bellows, Inc. designed and fabricated tied universal expansion joints with stainless steel flanges for a nitrogen plant in Arizona. They are 10″ and 14″ diameter and are 140-3/8″ and 168″ OAL. The bellows are fabricated from 321 stainless steel and the pipe is 304L stainless steel. The expansion joints were dye-penetrant examined and hydro-tested to ensure product quality.
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These fabric expansion joints were fabricated from stainless steel pipe and flanges with a three layer fabric belt protected by an insulation pillow. Each joint is 44″ ID x 40″ face-to-face and designed for 3 PSIG at 845°F. The expansion joints are designed for a lateral movement of 1/2″ and an angular rotation of 1.5°. Stainless steel covers were included to protect the fabric expansion element from possible outside damage.
U.S. Bellows, Inc. fabricated rectangular fabric expansion joints for a gas turbine.They are 136″ L x 54″ W 12″ face-to-face. The frame and liner are fabricated from stainless steel and the fabric belt is 1-ply PTFE. The expansion joints are designed for 600°F at +/- 100″ water column. A 100% dye-penetrant examination was preformed prior to shipment.
U.S. Bellows custom-designed inline pressure balanced expansion joints for a pipeline in Texas. The bellows are fabricated from 316 stainless steel and the flanges and liners from carbon steel. The units have a 20″ diameter and are 30″ in overall length. The expansion joints were designed for 0.17″ compression with an operating temperature of 150°F at 285 psig. A dye penetrant test and pressure test at 300 PSIG was performed prior to shipment.
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U.S. Bellows custom designed this tied universal expansion joint for a power plant. The expansion joint is 12″ Dia. x 34 1/2″ OAL. The bellows are fabricated from Inconel 625 LCF and the tie rod ring attachments, pipe and tie rods are 316 stainless steel. It is designed for an axial movement of 1/2″, a lateral movement of 2 1/4″ at 1250°F and 120 psig. The bellows longitudinal seam was 100% x-rayed, all welds were dye penetrant-examined and the unit hydrotested prior to shipment.
U.S. Bellows, Inc. fabricated this 84″ diameter universal expansion joint with refractory lining for an FCC unit in Texas. The unit is designed with 321 stainless steel bellows and carbon steel flanges. It is lined with a 4″ thick refractory lining and measures 96″ in overall length. The bellows long seams were 100% x-rayed and dye-penetrant tested
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