High quality metallic expansion joints, thermal expansion, vibration and other movements solution supplier!

Product  Description

Product name : Expansion Joint/Compensator/Metal bellow expansion joint for specific purpose

Connection : Unrestrained & Fixed flange ends, Hinged, tie roded, etc

Flange standard: ANSI, JIS,DIN, BS, GB

Flange materials: Stainless steel/Carbon steel 

Bellow material : Stainless steel SS304/SS316L/SS321

Tie Rods material: Carbon steel 

Place of Origin: Hebei, China (Mainland)

Brand Name: North Metal Hose

Length : As customer required 

Type: Coupling

Technics: Forged 

Shape: Equal 

Certification: ISO9001:2008, TS 

Welded Line Type: Longitudinal

Temperature :  -196 to +1300℃

Working pressure : 0.6Mpa

Medium: air,oil,water,gas, chemical,powder,etc

Business Type : Manufacture 

Customized: Yes

HS code:73072900

Advantages

• Safety :

A catastrophic sudden failure is virtually impossible. The multi-ply inner core prevents the instantaneous bursting action. If a crack occurs for reasons like stress, corrosion fatigue failure in the inner or outer plies- the plies in between acting as labyrinth seal contain the pressure and the medium and hold the entire joint intact. A small bubble or blister occurs only in the outer ply. However the joint still performs satisfactorily for many thousands of cycles giving enough time for the procurement of the replacement.

• Longer Service Life :

The inherent advantage of using multiple plies of relatively thin gauge material results in less residual stresses which are introduced at the time of forming the multi-wall bellows element . Also the thinner gauge multiple plies are subjected to less operating stresses compared to a single heavy gauge in operating cycles. For  a given duty conditions laminated bellows have lower built-in and operating stresses which ultimately results in longer life.

• Compact Design :

Since multi-ply / multi-wall laminated bellows are having more flexibility than conventional bellows they require less length to accommodate a given movement in the pipelines. This makes the assembly of North Metal Hose multi-wall bellows more compact and economical.

• Lower Thrust Forces :

The multi-ply / multi-wall laminated design results in to lower spring rates for a given pressure capacity. Also the effective cross sectional area of multiply laminated metal bellows is less compared to conventional bellows to accommodate a given movement. These two reductions result in to lower forces and moments on the anchors, equipments and guides supporting the piping system. The anchors and guides of the system can be dimensioned significantly smaller and more economically. This increases the life of the connected equipment and raises the reliability of the overall piping system keeping the piping cost to a minimum.

• Cost Reduction :

Because of higher flexibility and movement capacity, a small number of multi-wall bellows joints is sufficient to absorb large displacements compared to conventional thick single wall expansion joints.

• No Emergency :

Even if the inner plies gets damaged the multi-ply/multi-layer metal bellows does not loose its capacity to perform essential functions. Because of the intact outer plies the ability to resist pressure and the flexibitity of the the expansion joints are retained over a longer time. This gives enough time to replace the joint at the next planned shut-down.

• Economical Design for Corrosion Protection :

In order to reach the desired degree of protection only the ply of the bellows actually in contact with the medium is manufactured from special high corrosion and temperature resistant alloy. The remaining outer plies not in contact with the medium are selected from other economical standard stainless steels.

Years of experience and innovation, combined with extensive references from multiple industries illustrate our abilities as a committed, problem-solving and rapidly developing manufacturer. Utilizing the very latest technologies we maximize efficiency throughout the entire design and manufacturing process. We strive to deliver excellence. We dare to take on challenging tasks and develop client-centred solutions to match customer requirements. It’s our firm belief that commitment to customers and staying true to our values results in long lasting and mutually valuable business partnerships.

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