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

Hebei Haihao Flange Factory

Hebei Haihao Flange Factory
  • Sealing principle of the slip on flange

    Sealing principle of the slip on flange

    Today is the last part of the introduction of slip on flange – sealing principle of slip on flange. The two sealing surfaces of the bolt press the flange gasket against each other to form a seal, but this also leads to the damage of the seal. In order to keep the seal, it is necessary to m ...

  • Application characteristics of slip on flange

    Application characteristics of slip on flange

    In the last article,we introduced the main functions of the slip on flange in detail,so today we will focus on the application characteristics of the slip on flange. The slip on flange not only saves space and weight, but also ensures that the joint will not leak and has good sealing performance ...

  • Main function of slip on flange

    Main function of slip on flange

    Because the slip on flange is widely used in ships, chemical industry, petroleum and other industries,we will introduce the main function,application characteristics and sealing principle of the slip on flange in detail.There are three chapters in total.The first one today — main functions ...

  • Stub ends for flanged joints

    Stub ends for flanged joints

    What is a stub end and why should it be used? Stub ends are butt weld fittings that can be used (in combination with a lap joint flange) alternatively to welding neck flanges to make flanged connections. The use of stub ends has two advantages: it can reduce the total cost of flanged joints for ...

  • Do you know about Ring Type Joint (RTJ) gasket?

    Do you know about Ring Type Joint (RTJ) gasket?

    Ring type joint gaskets are also known as RTJ gasket or O-ring Gaskets. These gaskets are used for high-pressure services. They are solid rings of metal (cut from plate, pipe or a forged ring) in different cross sections such as oval, round, octagonal. Special RTJ gasket comes with a hole in the ...

  • Difference between ASTM A105 flange and A105N flange

    Difference between ASTM A105 flange and A105N flange

    When we produce carbon steel flanges A105 material,sometimes customer request ASTM A105 material,sometimes it is A105N material.What is the difference between the ASTM A105 steel flange and ASTM A105N steel flange. ASTM A105 and A105N steel flanges have same raw materials,same steel grades,but t ...

  • Learn about spiral wound gasket

    Learn about spiral wound gasket

    Why did we call it SWG? SWG is a short form of Spiral Wound Gasket. These gaskets are extremely popular due to the wide variety of available styles and sizes. SWG can be fabricated of any metal which is available in thin strip and which can be welded; therefore, they can be used against virtuall ...

  • Basis for selection and use of flange

    Basis for selection and use of flange

    Flange is an important part in pipes and fittings engineering, pipe fittings flanges are used for pipe and pipe connection. Haihao Group engaged in the production and sales of pipes and fittings for almost 30 years, based on our abundant experience about pipes and fittings and pipe fittings flan ...

  • How about the difference between SS304 and SS316?

    How about the difference between SS304 and SS316?

    SS304 and SS316 are the most used stainless steel materials.The main differences between 304 stainless steel and 316 stainless steel are: Differences in the main components of both metal: 304 stainless steel and 316 stainless steel contain about 16 ~ 18% chromium, but 304 stainless steel contain ...

  • Characteristics and properties of stainless steel 304

    Characteristics and properties of stainless steel 304

    Characteristics and uses of 304 stainless steel 304 stainless steel is the most widely used type of chromium-nickel stainless steel. It has good corrosion resistance, heat resistance, low temperature strength and mechanical properties. It is resistant to corrosion in the atmosphere. If it is an ...

  • Something you need to know about stainless steel products

    Something you need to know about stainless steel products

    Stainless steel products are widely used in our life and industry. Do you know the characteristics of stainless steel? Please come with Haihao Group to learn some knowledge of stainless steel. General characteristics of stainless steel: Beautiful surface and diverse use possibilities Good corro ...

  • Welded requirement for large size fitting and flange

    Welded requirement for large size fitting and flange

    Compared with the standard flange pipe fitting, the welding seam requirements are very strict, this is because the use of large flange pipe fitting environment requires higher strength.Therefore, strict testing technology is the key to ensure the welding quality of large flange pipe fittings.For ...