Hebei Haihao High Pressure Flange Pipe Fitting Group Co.,Ltd

Hebei Haihao Flange Factory

Hebei Haihao Flange Factory
  • Precautions for installation and use of metal spiral wound gasket

    Precautions for installation and use of metal spiral wound gasket

    Metal spiral wound gaskets (base type) are made of high quality SUS304, SUS316 metal strips (” V “or” W “shape) and other alloy materials, and are spiral wound with graphite, asbestos, polytetrafluoroethylene, non-asbestos and other soft materials.Metal strips are fixed a ...

  • Advantages of blind flange connection

    Advantages of blind flange connection

    A blind flange looks like a plate with bolts holes around. There is no inner hole on the blind flange comparing to other type flanges, so the blind flange is used to close the end of a vessel or piping system. Blind flange also be used for pressure testing for prevent the liquid or air flow.What ...

  • General knowledge of forged flanges

    General knowledge of forged flanges

    For those who don’t know much about flanges, flanges are actually a common disc-shaped part that helps connect pipes, equipment, etc.Forged flange because of its excellent joint performance, in many places has been rapidly promoted and applied.But many people still have a lot of questions ...

  • What are lens ring flange joints and how they are machined?

    What are lens ring flange joints and how they are machined?

    The lens ring type of flange joint is used to create a seal in high temperature and high pressure piping systems. This joint differs from the standard raised face flange joint (which has a ‘flat’ sealing face), by having a sealing face angled at 20° down towards the center of the bor ...

  • How to identify and choose flange gaskets?- part two

    How to identify and choose flange gaskets?- part two

    Last article we learned about some flange gaskets,today let me tell you other flange gaskets.(How to identify and choose flange gaskets-part one) Metal jacketed gasket A metal jacketed gasket is a composite gasket composed of a non-metallic material as the core material and cut into the desired ...

  • How to identify and choose flange gaskets-part one

    How to identify and choose flange gaskets-part one

    Flat gaskets used in the industry generally consist of a sealing element and an inner and outer reinforcing ring, which is a key part of the leakage prevention. Commonly used materials are non-metallic materials, such as flexible graphite, PTFE, fiber reinforced rubber-based composite panels. In ...

  • How to assemble stub ends and lap joint flange?

    How to assemble stub ends and lap joint flange?

    Stub ends and lap joint flanges can be assembled following this process: The lap flange is slipped over and onto the stub end flange. The stub end flange is then welded onto a pipe spool, using an approved Welding. Procedure specification (WPS), by a qualified welder. The lap joint flange, back ...

  • How to choose flange products correctly?

    How to choose flange products correctly?

    Flange is widely used in basic projects such as chemical industry, construction, water supply, drainage, petroleum, light and heavy industry, refrigeration, sanitation, plumbing, fire fighting, electric power, aerospace, shipbuilding and so on. So there are many types of Flanges. How do we choos ...

  • Common problems in casting flange use

    Common problems in casting flange use

    During flange casting, liquid metal is filled into the mold and solidified during rotation.Flange casting has the following characteristics: liquid metal can form a mold with a freely selected hollow cylinder surface, so that the hollow casting does not have a core, thus greatly simplifying the ...

  • Introduction of rolling large diameter flange

    Introduction of rolling large diameter flange

    Rolling flange is cut into strips with medium plate, and then rolled into circular welding joint, and then processed by flattening process. It can be divided into cold coil and hot coil. After being processed into a circle, the water line, bolt hole and mouth stop are processed. This is generall ...

  • How to choose the materials of stainless steel flanges?

    How to choose the materials of stainless steel flanges?

    Flange is a disc-shaped connecting part that is connected between pipe ends and closed at the same time. It is the most common in pipeline engineering, such as the connection of ventilation pipes. Flange materials include carbon steel, low alloy steel and stainless steel. Among them, stainless s ...

  • What is high pressure flange?

    What is high pressure flange?

    The core of high pressure self tightening flange is a new unique seal, which is formed by elastic deformation of sealing lip (T-Arm) of sealing ring, which belongs to hard seal. A strong rigid body is formed by the combination of joint, ferrule and sealing ring, which makes the strength of the c ...