A blind flange is a round plate which has all of the relevant blowholes except center hole, and because of this feature the blind flange is usually used to close off the ends of a piping systems and pressure vessel openings. It also permits easy access to the interior of a line or vessel once it ...

A weld neck flange consists of a circular fitting with a protruding rim around the circumference which is generally machined from a forging, these flanges are typically butt welded to a pipe. The rim has a series of drilled holes that permit the flange to be affixed to another flange with bolts. ...

As the name suggests, long weld neck flange has long neck than regular weld neck flange. Other than neck, all the dimensions are same as the regular flanges.  You can see the difference in the image. It is used as a nozzle in the pressure vessel and heat exchanger. long weld neck flanges Here, i ...

Weld overlay (WOL), also known as cladding, hardfacing, weld cladding, or weld overlay cladding, is a process where one or more metals are joined together via welding to the surface of a base metal as a layer. This is normally done to improve the material by adding either a corrosion resistant o ...

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 ...

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 ...

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 ...

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 ...