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Quick Details

  • Material: Stainless Steel
  • Technics: Forged
  • Type: Coupling
  • Place of Origin: Henan, China (Mainland)
  • Model Number: BPDZ
  • Brand Name: Liwei
  • Connection: Flange
  • Shape: Equal
  • Head Code: Round
  • DN: 1.28''-48''
  • Media: hot air, SO2, steam, water, oil, acid, gas and etc.
  • Pressure: 0.6~2.5 MPa
  • Certificate: ISO9001/ISO14001

Packaging & Delivery

Packaging Details Metal Expansion Bellow: Fumigation-free Wooden Case (Out package) and Plastic Film and Textile Membrane(inside package), and we could make necessary changes as your request.
Delivery Time 7-40 according to the amount you booked

Henan Liwei Industry Co., Ltd:

1. Since 1988, manufacturer and exporter of Metal Expansion Bellow in China;

2. The Main Drafting Committee of National Standard for Expansion Bellow; 

3. Qualified Supplier for CGN Nuclear Power Plant;

                              4. ISO9001:2008 and ISO14001:2004 Certified.


Metal Expansion Bellow is the compensating element for thermal expansion and relative movement in pipelines, containers and machines. They consist of one or more metal bellows, connectors at both ends, and tie rods that depend on the application. They are differentiated according to the three basic types of movement: axial, angular and lateral expansion joints. 


Metal Expansion Bellow is elastic vessel that can be compressed when pressure is applied to the outside of the vessel, or extended under vacuum. When the pressure or vacuum is released, the metal bellows will return to its original shape (provided the material has not been stressed past its yield strength).



  • Economical end usage
  • Providing for lower initial costs in piping & construction work


  • Diesel engine sets
  • Pipelines
  • Turbines
  • Compressors
  • Blowers
  • Vacuum pumps
  • Heat exchangers 


  • Reduce vibration
  • Dampen sound transmission
  • Compensate lateral, torsional & angular movements
  • Compensate axial movements
  • Minimal face-to-face dimensions
  • Lightweight
  • Low movement forces required
  • Reduced fatigue factor
  • Reduced heat loss
  • Corrosion, erosion resistant
  • No gaskets
Parameters of Metal Expansion Bellow:
Metal Expansion Bellow of Liwei: 
Why us:

Henan Liwei Industry Co.,Ltd. is a leading manufacturer of metal expansion bellow in China. We have:

(1) Strong R&D strength;

(2) Strict Quality Control System;

(3) Perfect Test System;

(4) Professional After-sale Service Team;

(5) OEM Service.

We are your qualified supplier and reliable friends!

Thanks for your attention. For more information, please feel free to contact our sales manager

Candice Liang

Skype: candice_liweigroup


More about Henan Liwei:




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