Flange is the abbreviation of flange plate. The name is the transliteration of flange. It was first proposed by an Englishman named Elchart in 1809, and he also proposed the casting method of flange at the same time, but later It was not widely used for quite a while, until the beginning of the twentieth century, flanges were widely used in various mechanical equipment and pipeline connections.

1. According to the chemical industry (HG) industry standard:
Integral Flange (IF), Threaded Flange (Th), Plate Welding Flange (PL), Neck Welding Flange (WN), Neck Welding Flange (SO), Socket Welding Flange (SW) ), butt welding ring loose flange (PJ/SE), flat welding ring loose flange (PJ/RJ), lining flange cover (BL(S)), flange cover (BL).

2. According to the petrochemical (SH) industry standard:
Threaded flange (PT), butt welding flange (WN), flat welding flange (SO), socket welding flange (SW), loose flange (LJ), flange cover (not shown).

3. According to the machinery (JB) industry standard:
Integral flange, butt welding flange, plate flat welding flange, butt welding ring plate loose flange, flat welding ring plate loose flange, flanging ring plate loose flange, flange cover.

4. According to the national (GB) standard:
Integral flange, threaded flange, butt welding flange, neck flat welding flange, neck socket welding flange, butt welding ring with neck loose flange, plate flat welding flange, butt welding ring plate loose sleeve Flange, flat welding ring plate loose flange, flanging ring plate loose flange, flange cover.

Flange, also known as flange flange or flange. Usually, it refers to opening several fixed holes on the periphery of a disk-like metal body for connecting other components, and is widely used in various mechanical equipment and pipeline connections. Flanges are the interconnected parts between shafts and are used for the connection between pipe ends; they are also used as flanges on the inlet and outlet of equipment for the connection between two equipment, such as reducer flanges.