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The socket weld flange refers to a flange that is inserted into the flange ring step at the end of the pipe and welded at the pipe end and the outside. There are two types of neck and no neck. The neck flange has good rigidity, small welding deformation and good sealing performance.
The standards of butt welding flange, flat welding flange and socket welding flange are different. In addition, the diameter and wall thickness of the butt welding flange at the interface end are the same as those of the pipe to be welded, just like the two pipes.
The flat welding flange is a concave which is slightly larger than the outer diameter of the pipe at the interface, and the pipe is inserted and welded inside.
Butt welding has better welding performance and less corrosion.
The flat welding flange is generally used for low and medium pressure pipes, and the butt welding flange is used for the connection of medium and high pressure pipes. The butt welding flange is generally at least PN2.5MPa. The butt welding is used to reduce stress concentration.
Features of various flanges:
Socket welding flange is suitable for small diameter, high pressure and high temperature pipeline connection.
Flat welding has a boss like butt welding. There is a groove on the boss, and then the pipe is inserted into it for welding.
Socket welding means that there is no boss, and a groove is directly opened on the flange body, just like a hole is opened on the blind flange, and then a groove is opened.
The welding performance of flat welding is a little better than that of socket welding.cheap Carbon Steel Flanges
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