Blog Guides & Technical Articles

55″ O.D. Refractory Lined Universal Gimbal Expansion Joints with Slotted Hinges for a Refinery in Joliet

January 30, 2004

U.S. Bellows, Inc. specially designed and manufactured two 55″ O.D. refractory lined universal gimbal expansion joints for a refinery in Joliet. These expansion joints are equipped with slotted hinges with an overall length of 163″ and 286″ respectively. The 163″ O.A.L. expansion joint, designed for 60 PSIG and 1020°F, will be used at the reactor standpipe of the refinery. The 286″ O.A.L. expansion joint will be used for the regenerator standpipe of the refinery and it is designed for 57 PSIG and 1300°F. Both expansion joints consist of an A516 Gr70 pipe, two SB-443 two-ply bellows, and a slotted hinge.

To ensure quality, 100% dye-penetration, 100% x-ray and pressure tests were performed on the bellows. Pneumatic and vacuum tests were also conducted on the expansion joints and between bellows dry plies prior to shipping.

48” diameter Refractory Lined Expansion Joint for a Chemical Plant in Ecuador

October 10, 2003

48” dia. Refractory Lined Expansion Joint for a Chemical Plant in Ecuador

U.S. Bellows, Inc. designed and fabricated a Refractory Lined Expansion Joint with pantographic linkages for a chemical plant in Ecuador. This expansion joint was designed for 60 PSIG and 1450 °F with a 4” thick refractory installed per UOP specifications. The bellows were constructed from SB-443 Inconel® 625, and the weld ends, hinges, pantographic linkages, and floating ring were made from A516-70.

The bellows, weld ends, and spool long seam welds were 100% X-rayed and 100% dye-penetrant tested per ASME standards. A pneumatic test was performed at 15 PSIG for the entire expansion joint assembly prior to shipping.

6″ Diameter Tied Universal Expansion Joints for a Steam Reformer

September 12, 2003

U.S. Bellows, Inc. recently designed and manufactured eight 6″ diameter tied universal expansion joints with 24” F-F. These expansion joints are made from two-Ply Inconel® 625 bellows, A312 TP 304 spool, and A105 flange. They are designed for FV/50 PSIG and 300°F with axial and lateral movements of +/- 0.25″ and 0.70″, respectively. The joints were 100% X-Rayed, 100% Dye-Penetrant, and hydro-yested at 75 PSIG. Flanges, tie rod, and spherical nuts are hot dip galvanized per customer specification.

Three 12′ x 8′ Rectangular Expansion Joints with Full Radius Corners

August 1, 2003

Three 12′- 0" x 8′- 0" Rectangular Expansion Joints with Full Radius Corners for a Chemical Plant in Texas — Three 12′- 0″ x 8′- 0″ Rectangular Expansion Joints with Full Radius Corners for a Chemical Plant in Texas

U.S. Bellows, Inc. recently manufactured three 12′ – 0″ x 8′ – 0″ rectangular expansion joints designed at 5 PSIG and 650 °F. The expansion joints are fabricated with full radius corners which allow for increased cycle life. The bellows are formed from Inconel® 625 SB-443 GR. 1 and the rest of the assembly is fabricated from A516-70. The long seam welds were 100% x-rayed. A 100% dye-penetrant test was performed on the attachment welds.

Three 23″ – 1/3″ Expansion Joints for a Refinery in New Jersey

July 4, 2003

U.S. Bellows, Inc. custom designed and manufactured three 2’ – 6” OD x 23’ – 1/3” long expansion joints for a refinery in New Jersey. The bellows, pipes, and lugs were fabricated from Inco 800H high nickel alloy, A312tp 316H stainless steel, and A240tp 316H stainless steel, respectively. The expansion joints are designed for 60 PSIG, 1100°F, and 47,000 lbs. of thrust to accommodate for a high temperature application.

5′ x 12′ Fabric Expansion Joint for a Power Plant in Oklahoma

June 6, 2003

U.S. Bellows, Inc. recently designed and manufactured a 5′ – 0″ x 12′ – 0″ fabric expansion joint for a hot air ducting system in a power plant in Tulsa, OK. It is designed at 15″ W.C. and 600 °F for 3/4″ axial movement and 1/2″ lateral movement. The fabric belts are composed of three layers with the outer layer serving as a waterproof barrier.

EPDM Tied Expansion Joints for a Construction Company in Texas

May 23, 2003

U.S. Bellows, Inc. designed and fabricated 2 EPDM tied expansion joints for a construction company in Texas. These expansion joints have an inside diameter of 29”. They are composed of A516 carbon steel grade 70 with a six-rod control assembly, EPDM, and plate flange. They were hydro-tested to 217 PSI. These joints were ordered on a one-week rush basis to replace an existing joint that was leaking.

Refractory-lined Expansion Joint for an FFC Unit in India

May 2, 2003

U.S. Bellows, Inc. designed and fabricated this refractory lined universal expansion joint for an FFC Unit in India. This is a 70″, outside diameter, tied refractory-lined universal expansion joint with two-ply Inconel® 625 LCF bellows, A516 weld ends and spool, and a 4″ thick refractory lining per UOP specifications. This joint was designed at 51 PSIG and 1400 degrees F. Bellows long seam welds were 100% x-rayed and 100% dye-penetrant before and after forming. It was also pneumatic tested at 57 PSIG the refractory lining was dried out per UOP specifications.

Rectangular Fabric Expansion Joint for Coal Fired Power Plant in Puerto Rico

February 4, 2003

U.S. Bellows, Inc. designed and manufactured a 21’ x 14′ fabric expansion joint for a power plant in Puerto Rico. This expansion joint was designed at 1 PSIG and 1200 °F for an air duct at the power plant. The frame is all A-240 and 304 stainless steel construction. This expansion joint is equipped with 6” thick insulation pillows. Telescoping liners hold the insulation pillows between the liner and the fabric belt to reduce heat transfer and prevent ash accumulation.

54″ Diameter Tied Universal Expansion Joint for NASA Space Center

March 1, 2002

54″ Diameter Tied Universal Expansion Joint for NASA Space Center

U.S. Bellows, Inc., the expansion joint division of Piping Technology & Products, Inc., specially designed and fabricated a 54″ diameter tied, universal expansion joint for NASA Space Center. The expansion joints were designed at full vacuum and 450° F and constructed with 304 SS bellows, liner and A516 Gr. 70 spool, weld ends and carbon steel tie rods. The bellows’ attachment welds were 100% dye-penetrant tested.

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55″ O.D. Refractory Lined Universal Gimbal Expansion Joints with Slotted Hinges for a Refinery in Joliet

48” diameter Refractory Lined Expansion Joint for a Chemical Plant in Ecuador

6″ Diameter Tied Universal Expansion Joints for a Steam Reformer

Three 12′ x 8′ Rectangular Expansion Joints with Full Radius Corners

Three 23″ – 1/3″ Expansion Joints for a Refinery in New Jersey

5′ x 12′ Fabric Expansion Joint for a Power Plant in Oklahoma

EPDM Tied Expansion Joints for a Construction Company in Texas

Refractory-lined Expansion Joint for an FFC Unit in India

Rectangular Fabric Expansion Joint for Coal Fired Power Plant in Puerto Rico

54″ Diameter Tied Universal Expansion Joint for NASA Space Center

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