Expansion joints

     With more than 15 Years, MWI is one of the leading suppliers of Fabric and Metallic Expansion joints. Expansion joints are incorporated in pipe and duct system to take up thermal expansion, pressure, vibration and misalignment, there by preventing damage to the pipe work or ducting system. Nowadays Expansion joints are the most important part in industrial and energy plants. For all mediums like air, flue gas, etc they are installed in power plants, gas turbine systems, FGD systems, Pump systems, cement Industries, chemical plants etc.

     Expansion Joints are devices with at least one bellow, that absorbs movement, stress, noise and vibration to protect pipe or duct fittings. They allow for rigid mounting of pipes in constricted areas and eliminate more complicated means of protecting piping from changes.

     Expansion joints provide a wide range of deflection capability. A flexible expansion joint may be designed to deflect lateral, axial angular, or torsional stresses, or a combination of any of these.

Metallic Expansion Joints    

     Metallic joints are round or rectangular, single or multilayer designs and in wide variety of steel qualities. MWI gives Guaranteed life of 1 year for Metallic Expansion Joints (Already proven at various thermal power stations)

     MWI offers rectangular expansion joints to compensate for axial and lateral movements covering a wide range of operating conditions. Assemblies are offered in different corner configurations. Rectangular bellows assemblies are used in gas turbine exhaust systems, forced draft fans, flue gas ducts, regenerators, precipitators and other hot gas large volume ducting systems.






Fabric Expansion Joints

Mechwell Industries is first in ASIA to become member of FSA, USA for fabric expansion joint.

     Fabric joints are made of different fabric materials which can be used in high temperature i.e. around 1000 degree centigrade applications or aggressive environment. MWI gives Guaranteed life of 5 years for Fabric Expansion Joints (Already proven at various thermal power stations) MWI offers wide range of specialty fabrics for different applications. PTFE laminated fiberglass composites are designed for dry flue gas service. A 0.005” PTFE barrier is laminated to fibre glass composite to produce rugged material.

     Thick barrier is specialty product. It can withstand flexing cycles 17 times (3.2 Mn) than that by PTFE / fiberglass composite. This zero porosity barrier is the critical component for preventing chemical attack in expansion joint as compared to traditional thin fragile layer normally offered by most manufacturers. MWI offers thick corrosion barrier on fiberglass composite base. PTFE / fiberglass composite laminated by 100% specialty barrier is capable of resisting stress cracking by flexing and severe temperature fluctuations. The multi directional strength of barrier adds to expansion joint durability. 0.005” non-woven Insulation component laminated to PTFE / Fiberglass composite for severe temperature exposures up to 538 degree centigrade.

Insulation acquires strength from load bearing composite. Added integrity extends life of insulation and prevents hot spot forming.

Expansion Joints Enquiry