Rectangular Metallic Expansion Joints — The Expansion Joints Blog

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Rectangular Metallic Expansion Joints

January 5th, 2011 Comments off

Rectangular metal expansion joints have a variety of applications in the power, petrochemical, refining, chemical, and steel industries. Since there are no standard duct sizes, and due to the wide range of pressure and temperature combinations, each rectangular metal expansion joint is custom-engineered to provide the most economical design that will absorb the thermal movements of the system in which it is installed.

General arrangement of rectangular expansion joints with supported sides

General arrangement of rectangular expansion joints with supported sides

Features:

- Absorbs axial and lateral movements

- Variety of bellows geometry (for long straight sides)

- Normal guiding is required

- Manufactured for a wide variety of materials

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Like circular expansion joints, rectangular expansion joints absorb three types of movement: axial, lateral and angular. For the purpose of designing rectangular bellows, it is critical to know in which direction the lateral and angular movements will occur, i.e. parallel to the long and/or short side of the bellows.

55' Long by 14'-6" Wide Rectangular Metallic Expansion Joint

Unlike circular bellows where the pressure stress is a circumferential membrane (hoop) stress, the rectangular bellows must be designed for longitudinal (beam) bending stresses. Long unsupported lengths must frequently be supported to prevent excessive deflection and stresses of the bellows element. In certain applications, covers and liners can perform the function of pressure supports.

View more information of Rectangular Metallic Expansion Joints

Types of Metallic Expansion Joints

October 6th, 2010 Comments off

U.S. Bellows offers all types of metallic expansion joints. Each type has advantages and limitations that can provide flexibility, load reduction, structural integrity and reliability required in a piping system.

Metal expansion joints can withstand the design temperatures and pressures, as well as provide the capacity necessary to absorb thermal growth of the piping system. The thermal movement required can be axial, lateral or angular. In some cases, the pressure thrust of an expansion joint must be restrained by the use of tie rods, hinges or a gimbal while allowing the bellows to move through its design deflections.

Learn more about the different types of metallic expansion joints:

Types of Metallic Expansion Joints: Single, Universal, Hinged Single Expansion Joints —— Universal Expansion Joints ——- Hinged Expansion Joints


55′ Long by 14’6″ Rectangular Metal Expansion Joint

January 26th, 2010 Comments off
55' Long by 14' 6" Rectangular Metal Expansion Joint

55' Long by 14' 6" Rectangular Metal Expansion Joint

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.

84" Long Rectangular Metallic Expansion Joint

July 16th, 2008 Comments off
84" Long Rectangular Metallic Expansion Joint

84" Long Rectangular Metallic Expansion Joint

This rectangular metallic expansion joint measures 22″ x 84″ x 11″ face-to-face and is fabricated from 316 stainless steel bellows and carbon steel flanges. This expansion joint is designed to absorb axial compression in a hot air duct system to a fan inlet. The bellows have three convolutions with mitered corners. The expansion joint was 100% dye-penetrant examined and soap and air tested prior to being shipped to a power plant.

Response to a Local Emergency by Refurbishing a 36" Rectangular Metal Expansion Joint

December 5th, 2007 Comments off
Response to a Local Emergency by Refurbishing a 36" Rectangular Metal Expansion Joint

Response to a Local Emergency by Refurbishing a 36" Rectangular Metal Expansion Joint

U.S. Bellows, Inc. refurbished a rectangular metal expansion joint on an emergency basis for a local chemical plant. Upon arrival, the expansion joint was acid washed and dye-penetrant examined for any cracks in the metal. The expansion joint bellows were then repaired, retested and sent back to the customer in a matter of two days. The expansion joint measures 21″ x 26″ x 36 3/8″. The bellows are fabricated from Inconel® 625 LCF material. The rest of the assembly is fabricated from Inconel® 600 material. The design temperature is 660°F and the design pressure is 20 PSIG. The expansion joint was soap-air bubble tested and dye-penetrant examined before being returned.

71"x143" Rectangular Expansion Joint for an Oil Refinery in India

January 4th, 2002 Comments off
71"x143" Rectangular Expansion Joint for an Oil Refinery in India

71"x143" Rectangular Expansion Joint for an Oil Refinery in India

U.S. Bellows, Inc., the expansion joint division of Piping Technology & Products, Inc., designed and fabricated a 71 x 143 rectangular expansion joint for an oil refinery in India. The expansion joint was fabricated from SS 316 L, designed at 18 psig at 417°F. It is equipped with a liner and rounded corner bellows design. EJMA Standards and B31.3 code were used in the design and fabrication of this joint.

28"x 66" Rectangular Expansion Joint For Chemical Plant In South Carolina

November 9th, 2001 Comments off
28"x66" Rectangular Expansion Joint For Chemical Plant In South Carolina

28"x66" Rectangular Expansion Joint For Chemical Plant In South Carolina

U.S. Bellows, Inc. manufactures a stainless steel rectangular expansion joint, 28” x 66”, for an exhaust system at a chemical plant in South Carolina. This joint is equipped with a liner, tie rods system and mitered corner bellows design. The expansion joint was designed for 15 psig at 600 °F and leak tested. A 100% dye-penetrant test was also performed on all the welds.

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