Welded Type Bellow Expansion Joint

(Total 5 Products)

Stainless Steel Welded Expansion Joint

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Brand:Xinhuafeng
Min. Order:1 Piece/Pieces
Transportation:Ocean,Land,Air
Packaging:wooden case packing
Supply Ability:100000 Piece/ per Month
Place of Origin:China

Welded Bellows Expansion Joint: Durable Solutions for High-Demand Pipeline SystemsThe welded bellows expansion joint stands as a paragon of durability and performance in industrial piping, offering a suite of advantages that set it apart in...

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Butt Welded Bellows Expansion Joint

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Brand:Xinhuafeng
Min. Order:1 Piece/Pieces
Transportation:Ocean,Land,Air
Packaging:wooden case packing
Supply Ability:100000 Piece/ per Month
Place of Origin:China

Welded Type Bellow Expansion Joint: Efficient Compensation for Industrial Pipeline SystemsThe welded type bellow expansion joint—also known as a welded bellows compensator—emerges as an efficient and reliable pipeline connection component,...

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Heavy Duty Welded Expansion Joint

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Brand:Xinhuafeng
Min. Order:1 Piece/Pieces
Transportation:Land,Ocean,Air
Packaging:wooden case packing
Supply Ability:100000 Piece/ per Month

Heavy Duty Welded Expansion Joint: High-Strength Solution for Extreme Industrial PipingThe Heavy Duty Welded Expansion Joint stands as a robust cornerstone in high-pressure, high-stress industrial piping systems, engineered to withstand extreme...

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Custom Exhaust Duct Expansion Joint

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Brand:Xinhuafeng
Min. Order:1 Piece/Pieces
Transportation:Ocean,Land,Air
Packaging:wooden case packing
Supply Ability:100000 Piece/ per Month

Custom Exhaust Duct Expansion Joint: Tailored Flexibility for Industrial Ventilation Systems The Custom Exhaust Duct Expansion Joint emerges as a precision-engineered solution for industrial ventilation systems, designed to address the unique...

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High-Temperature Welded Metal Bellows Expansion Joint

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Brand:Xinhuafeng
Min. Order:1 Piece/Pieces
Transportation:Ocean,Land,Air
Packaging:wooden case packing
Supply Ability:100000 Piece/ per Month

High-Temperature Welded Metal Bellows Expansion Joint: Durable Solution for Extreme Heat PipingThe High-Temperature Welded Metal Bellows Expansion Joint stands as a robust cornerstone in high-heat industrial piping systems, engineered to withstand...

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A Welded Type Bellow Expansion Joint is a high-strength pipeline component featuring a metal bellows core with welded end connections, engineered to absorb thermal expansion, contraction, and mechanical displacements in high-pressure industrial systems. Its structure includes a stainless steel or alloy steel bellows with convolutions for flexibility, fused to pipeline ends via welding, creating a permanent, leak-tight seal ideal for critical applications.

The welded connection eliminates Flange-related leak risks, making it suitable for high-pressure, high-temperature environments like power plants, oil refineries, and chemical processing lines. Unlike flange-type variants, it offers superior structural integrity under extreme conditions, resisting pressure surges and maintaining performance where Rubber Expansion Joints may fail. The metal bellows design enables compensation for axial, lateral, and angular movements, reducing stress on pipes, valves, and equipment.
In system integration, it works synergistically with other components: a Rubber Expansion Joint dampens high-frequency vibrations in lower-pressure sections, while this welded joint handles major thermal displacements. A Flexible Metal Hose adds routing flexibility in complex layouts. A Flange Adaptor bridges welded segments to flanged components when needed. For maintenance access, a Dismantling Joint simplifies section removal, and a Duckbill Check Valve prevents backflow in critical lines.

Key advantages include exceptional pressure resistance, long service life, and minimal leakage risk. The welded design ensures uniform stress distribution, enhancing durability. Available in various sizes and alloys, it adapts to diverse industrial needs. By balancing strength, flexibility, and permanent sealing, it ensures reliable operation in demanding environments, proving essential for safe, efficient pipeline performance in high-stakes infrastructure.

Welded Type Bellow Expansion Joint

The welded type bellow expansion joint is a key component that can absorb the displacement of pipelines caused by factors such as thermal expansion and contraction. It is widely used in thermal, water supply, chemical, petroleum and other industries. It mainly consists of a bellows and two end pipes. The flexible deformation of the bellows can absorb the axial displacement of the pipeline, and can also absorb a small amount of lateral and angular displacement. The welded type bellow expansion joint is usually composed of stainless steel bellows, connecting pipes, limit pull rods, guide tubes and other components. The material of the bellows is usually stainless steel 304, 316L, 321, etc., and the material of the pipes at both ends is 20 steel. The welding process uses stainless steel welding wire welding, and the welding seam must not be less than 3 times. After welding, the weld needs to be polished, flaw detection test and water pressure test.

Material

stainless steel 304, 316L, 321, etc.

Nominal diameter

DN32 - DN3000 mm

Product Detail

The welded type bellow expansion joint is mainly composed of bellows, connecting pipe (or end pipe), limit rod (optional), guide tube (optional) and other components.

Bellows: It has multiple waveforms, which allow the bellows to deform flexibly when subjected to axial, lateral or angular displacement.

Connecting pipe: It is usually connected to the bellows by welding to ensure the integrity and sealing of the expansion joint.

Limit rod (small rod): An auxiliary component of the welded bellows expansion joint, usually used to control the deformation of the bellows.

CUSTOMER

VOICE

WHAT A CLIENT SAY?

Customers generally believe that the stress absorption capacity of the welded type bellow expansion joint in multiple dimensions (such as axial, lateral, and angular) can effectively alleviate the stress concentration caused by temperature changes, equipment vibration, etc., thereby extending the service life of the equipment. The welding connection method ensures the integrity and sealing of the expansion joint and the pipeline. Although the treatment of the welded joint needs to be considered during maintenance, the customer believes that as long as the corresponding technology and equipment are available, the maintenance process is relatively simple and easy to control.

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Application areas

The application areas of pipelines are very wide, mainly including municipal engineering, building water supply and drainage, industrial production, agricultural irrigation, new energy and other fields.

FAQ

Important things you should know

What should be paid attention to in the design of the bellows?

The design of the bellows needs to be determined according to the length, diameter and possible expansion of the pipeline to ensure that the compensation of the compensator is large enough.

What factors should be considered when calculating the corrugation thickness of the compensator?

Pipeline working pressure, inner diameter, material properties and design requirements, etc.

The difference between axial compensators and lateral compensators?

The main difference lies in their respective design purposes and compensation capabilities. Axial compensators are mainly used to deal with axial expansion and contraction of pipelines, while lateral compensators are specifically used to deal with lateral displacement.

Manufacturing process?

The bellows used for compensators are mostly rolled into cylinders with plates or strips, and welded into pipe blanks along the longitudinal seams. At the same time, welding is a common method for connecting the bellows and the joints at both ends of the compensator.

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