trade assurance stainless steel multi-layer expansion joint

1. multi-layer expansion joint Features and use:

Manufacture of Metallic Bellows

Welded Metallic Bellows can be fabricated from a variety of exotic metals and alloys, whereas formed bellows are limited to alloys with good elongation – brass being a prime example. Welded bellows are not fabricated from brass because of its fundamentally poor weldability. Other advantages to welded bellows include compactness (higher performance in a smaller package), ability to be compressed to solid height with no damage, resistance to nicks and dents, and dramatically greater flexibility.

The welding of metal bellows is a microscopic welding process, typically performed under laboratory conditions at high magnification.

Hydroformed bellows are produced by forcing a metal tube to expand under hydraulic pressure inside a bellows-shaped mold, and assume the convoluted shape of the mold.

Electroformed bellows are produced by plating metal onto a bellows-shaped model (mandrel), and the subsequent mandrel removal by chemical or physical means.

This product takes advantages of high flexibility and high air impermeability and medium resistance of rubber as well as compliance and heat resistance of glass-fabric and is prepared at both ends with metal spool and flange in connection with wind machine and air duct ,which can compensate the thermal expansion by the operation of air duct and multidirections displacement. For better compliance of rubber and fabric and good sound absorption and vibration isolation, the noise and vibration passage can be reduced effectively in the operation of boiler, wind machine and air current. Because the main materials are rubber or fabric and fiber heat preservation materials of light weight without thrust in reverse and in no need of pipe supporting seat, a lot of materials are used so it has good heat resistance and corrosion resistance. In addition, rubber has better air impermeability absolutely without leakage and with lower price than metal compensator and import products.

Henan Liwei Industry Co., ltd.(the former Zhengzhou Liwei Rubber Products Co., Ltd.)

located at Shangjie District. Zhengzhou city is a manufacturer specializing in processing various steam, water, windpipe expansion and compensation joints, and a main base for producing rubber, metal and non-metallic pipe joints, It is also the appointed enterprise by the former chemical industry ministry, national construction ministry and general petrol chemical company member unit China Water Supply Association and power Equipment Network Union, and joints production unit recommended by China Water Association and National Metallurgy Ministry.

Our Liwei brand flexible rubber joints have various heavy calibers, type and high quality in the county, The products series have won four patents and our company is named [Quality and Credit Unit" by Henan Province, Our product have become the first choices for national power design ,municipality and metallurgy units.

At present, our product include four serial flexible rubber joints, three types, tens of standard and common specification, eight series of metal pipe loosing compensation joints and fourteen standard specifications and types, eleven types of standard and common specification products for serial wind pipe non-metal compensators. Our annual comprehensive production capacity can reach over forty thousand sets and we also process various pipe joint matching flat welding flanges (steel international/non-international standard). Our products have been sold in over thirty cities and autonomous regions, With China`s entry to the WTO; our products have been exported to foreign countries as Italy. Spain, Pakistan. Singapore and East European countries, etc, and the products have been become public famous brand products for design units and clients.

Our company has been equipped with rich technical strength, excellent design and complete design and complete products test measures. We also own a set of strict management system and high-quality technicians, In2004; we have gained quality management and environment management authentication.

Insisting on the rennet [Development Through Technology, Making More Friends, Creating Green Environment and Responsible for Future", the company has been devoting itself to creating top products and well serving all clients around the world, Liwei brand products will be a red line between we and the clients for ever.

Pls don't hesitate to email or call us if you have any questions!

• Henan Liwei Industry Co., Ltd.

  Address:No.68,Mengjin Road,Shangjie District,Zhengzhou,Henan,China