Flange, also known as flange flange plate or flange. A flange is a component that connects shafts and is used for connecting pipe ends; It is also used as a flange on the inlet and outlet of the equipment for the connection between two devices.

classification method

1. According to the chemical (HG) industry standards, it is divided into: integral flange (IF), threaded flange (Th), plate type flat welding flange (PL), neck butt welding flange (WN), neck flat welding flange (SO), socket welding flange (SW), butt welding ring loose sleeve flange (PJ/SE), flat welding ring loose sleeve flange (PJ/RJ), lining flange cover (BL (S)), and flange cover (BL).

2. According to the petrochemical (SH) industry standards, it is divided into threaded flange (PT), butt welding flange (WN), flat welding flange (SO), socket welding flange (SW), loose sleeve flange (LJ), and flange cover (not specified).

3. According to the mechanical (JB) industry standards, it is divided into: integral flange, butt welding flange, plate type flat welding flange, butt welding ring plate loose sleeve flange, flat welding ring plate loose sleeve flange, flange ring plate loose sleeve flange, and flange cover.

4. According to national (GB) standards, it is divided into: integral flange, threaded flange, butt welding flange, neck flat welding flange, neck socket welding flange, butt welding ring neck loose sleeve flange, plate type flat welding flange, butt welding ring plate loose sleeve flange, flat welding ring plate loose sleeve flange, flanging ring plate loose sleeve flange, and flange cover.