Flange classification

1. According to national standards: integral flange, threaded flange, butt welding flange, flat welding flange with neck, socket welding flange with neck, butt welding ring loose flange with neck, plate flat welding flange, Buttweld ring plate loose flange, flat weld ring plate loose flange, flanged ring plate loose flange, flange cover.

2. According to chemical industry standards: integral flange (IF), threaded flange (Th), plate flat welding flange (PL), neck butt welding flange (WN), neck flat 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).

3. According to petrochemical industry standards: threaded flange (PT), butt welding flange (WN), flat welding flange (SO), socket welding flange (SW), loose flange (LJ), flange Cover (not shown).

4. According to mechanical industry standards: integral flange, butt welding flange, plate flat welding flange, butt welding ring plate loose flange, flat wedding ring plate loose flange, flange ring plate loose flange, Flange cover.