Hello, welcome to the Shanghai Yong Xin Corrugate Pipe Co., Ltd.!

Service Hotline

13901579357

ProList

  • Corrugated Pipe
  • Nonmetal Expansion Joint
  • Metal Expansion Joint
  • Metal Hose
  • Air Supply Branch pipe
  • News

    Yongxin Bellows: Definition, Classification and National Standards of Expansion Joints

    Author: ComeFrom: Date:2021-07-02 16:38:36 Hits:124

    Expansion joints are also called expansion joints, or bellows compensators habitually. They are used to use the effective expansion and contraction of the elastic elements of the bellows compensator to absorb the dimensional changes of pipelines, ducts or containers due to thermal expansion and contraction. A compensation device belongs to a compensation element. It can absorb axial, lateral, and angular displacement, and is used to absorb vibration and reduce noise in heating displacement and mechanical displacement of pipelines, equipment and systems.


    Expansion joint standard:


    1. Standard number: GB/T 12777-2008
    Expansion joint standard name: general technical conditions for metal bellows expansion joints
    Standard implementation date: 2009-02-01
    Issuing department: National Bureau of Quality and Technical Supervision
    Introduction: This standard specifies the definition, classification, requirements, test methods, inspection rules, marking and packaging, transportation and storage of metal bellows expansion joints. This standard applies to the design, manufacture and inspection of circular expansion joints installed in pipelines whose flexible parts are integrally formed unreinforced U-shaped, reinforced U-shaped and ∩-shaped corrugated pipes. The design, manufacture and inspection of expansion joints for pressure vessels can also be used as reference.


    2. Standard number: GB16749-1997
    Expansion joint standard name: pressure vessel wave expansion joint
    Standard implementation date: 1997-08-01
    Issuing department: National Bureau of Quality and Technical Supervision
    Introduction: This standard specifies the design, manufacture, inspection, acceptance, storage, installation, basic parameters and dimensions of metal bellows expansion joints. It is suitable for reinforced single-layer or multi-layer U-shaped expansion joints for steel pressure vessels, steel shell-and-tube heat exchangers and atmospheric vessels. Pipeline expansion joints can be used as reference. This standard applies to the expansion joint, the design pressure is less than 6.4Mpa. The design temperature range is based on the allowable use range of steel.

    Next: Yongxin bellows: introduction to the types and characteristics of stainless steel
    • Contact
    • Addr. of HQ: No.88,Jinqiu Road,Baoshan District,Shanghai City
    • Addr. of factory: Meili economic & development zone,Changshu City,Jiangsu Province
    • Tel:13901579357(Mr.He) 13818231716(Mr.Lu) 15050307321(Mr.Chen)
      0512-52768580 021-56515330
    • E-mail:13901579357@163.com
    Online

    Tel:

    13901579357

    • Scan It

    Copyright © 2021 Shanghai Yong Xin Corrugate Pipe Co., Ltd. All Rights Reserved
    Scan WeChat
    13901579357