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 ...

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 ...

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 ...

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 ...

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 ...

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 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 ...

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 ...

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 ...

The west to east gas transmission project is an important pipeline system project in China. Among them, there are many kinds of flange used and they play an important role. Anchor flange is one of them. The anchor flange is a kind of very important supporting component in large diameter, high pr ...

Hebei Haihao Group specialized in flange, fittings and pipe production.When products finished, packing following. Packing aims to protect the flange, fittings and pipe during transportation and storage. Hebei Haihao Group can do kinds of packing for seaworthy and airworthy. For example, pallets ...

Gasket plays an important role in pipeline connection,to choose the proper flange gasket, should take into consideration the following:Temperature,Pressure,Corrosion resistance,Fluid type,Robustness,Availability,Cost. While gaskets are relatively cheap components of the whole piping system,but i ...