These 59” x 39.5” fabric expansion joints were fabricated using a 1/8” thick neoprene sheet. The joints were then bonded to the carbon steel angles and plates, and secured using stainless steel band clamps, with T-bolt latches. The carbon steel angles and plates were primed and finished at Piping Technology & Products’ paint production facility. The expansion joints were designed to facilitate any vibration and movement during the generator units’ normal operation.
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60 Inch Ductwork with Spring Supports, Snubbers, a Support Cradle and a Fabric Expansion Joint for a Sulfuric Acid Plant in Texas
U.S. Bellows, Inc. and PT&P combined to furnish a fabric expansion joint, duct work, a spring support cradle and snubbers. US Bellows furnished a fabric expansion joint with acid resisting fabric and also a duct work measuring 34’ long and 60” in diameter which was fabricated from ASTM A 516GR 70 carbon steel. PT&P furnished spring supports, carbon steel cradle supports, and snubbers. The expansion joint was completed within 6 weeks in time for a plant shutdown. A computerized pipe stress analysis, utilizing the Caesar II stress program, was performed to obtain the forces and moments imposed on the equipment nozzles and weights to be carried by the spring supports.
These are 24″ diameter fabric expansion joints with an overall face to face dimension of 12″. Each expansion joint weighs 300 lb. Installed in the inlet and exhaust piping of a hot air blower, they can withstand temperatures of up to 850F. These expansion joints were fabricated in three layers that consisted of aluminized fiberglass, ceramic fiber, and silica treated fabrics. The flanges were fabricated from carbon steel with special hex nuts welded to the inside of the bolt holes. The stud bolts are in place to assure correct alignment of the bolts to the flange bolt holes. Visual inspection and trial fitting of the stud bolts were performed to assure quality and performance.
These fabric expansion joints are made of stainless steel liner, flanged ends, backing bars, and PTFE impregnated fiberglass. They weigh between 370 lbs – 380 lbs and measure 81.15″ long, 18.44″ wide, and 16″ high. They are used in high temperature air ducts to allow for expansion. Its thermal growth consists of +/- 1/8 X-Y-Z directions. It is capable of withstanding 400°F at +/- 0.8 PSIG at a maximum flow of 130,650 ACFM. Standard testing was performed for quality assurance.
These rectangular fabric expansion joints measure 136″ x 54″ with a weight of 135 lbs each. They were fabricated out of fiberglass fabric with stainless steel frames and are designed for ± 5 PSIG and 400°F. The expansion joints were manufactured according to specific customer specifications.
The expansion joints consist of bellows formed by 1/8” thick neoprene sheet and A36 carbon steel flanges coated with a special finish per customer’s request. These expansion joints are 42” x 7 ¾”. A dye-penetrant test was performed on the welds prior to shipping to ensure quality. The turn around for this product was four days.
48 Multi-Layer High Temperature Rectangular Fabric Expansion Joints for a Gas Plant in Baytown, Texas
The rectangular fabric expansion joints consisted of two carbon and stainless steel frames separated by a high temperature Silica fabric. The frames measured 13” × 37” × 6”, 14½” × 20½” × 6” and 17¼” × 17¼” × 4” and weighed 90, 115, and 170 lb. Each expansion joint was designed for a 15” Water Column (W.C.) with a temperature of 750°F and allowed for movement ranging from ±½” to ±1” in both the axial and lateral directions.
U.S. Bellows, Inc. recently custom designed and fabricated 17 rectangular fabric expansion joints for a power system company in Texas. The expansion joints measure 54” x 136” and weigh 135 lb. each. They are designed for operation up to 5 PSIG and temperatures up to 400 degrees. The expansion joints are made of fiberglass fabric and have stainless steel frames.
U.S. Bellows, Inc. recently custom designed and fabricated five fabric expansion joints for a power system company in Texas. The expansion joints range in size from 30 to 62 in diameter and the rectangular expansion joints measure 81 x 18 and 136 x 54. They are designed to operate from 0.8 to 5 PSIG and in temperatures ranging from -40˚F to 400˚F. The products were fabricated using Neoprene and fiberglass fabric with carbon and stainless steel frames. A special paint system was applied per customer’s request. Additionally, the products were manufactured according to customer’s specific quality specifications.
U.S. Bellows, Inc. designed and fabricated a 42″ I.D. rubber expansion joint for a power plant in Texas. The expansion joint consists of a bellow formed by 1/8″ thick neoprene sheet and A36 carbon steel flanges coated with a special finish per customer’s request. To ensure quality, dye-pentrant testing was performed on the welds prior to shipping.