1, according to Chemical industry standards: The overall flange (IF), threaded flange (TH), plate flat welding flange (PL), with neck welded flange (WN), with neck flat welding flange (SO), socket welding Flange (SW), welded ring Pine sleeve Flange (pj/se), flat welded ring Pine sleeve Flange (PJ/RJ), Lining Falingues (BL (S)), Falingues (BL).
2, according to Petrochemical Industry standards: Threaded Flange (PT), welded flange (WN), flat welded flange (SO), socket welding Flange (SW), Pine sleeve Flange (LJ), Falingues (not note).
3, according to the Machinery industry standard points: The overall flange, welded flange, plate flat welding flange, welded ring plate pine sleeve flange, flat welded ring plate loose sleeve flange, flip ring plate loose sleeve flange, flange cover.
4, according to the National standard points: The overall flange, threaded flange, welded flange, with neck flat welding flange, with neck socket welding flange, welded ring with neck pine sleeve flange, plate flat welding flange, welded ring plate loose sleeve flange, flat welded ring plate loose sleeve flange, flip ring plate loose sleeve flange, flange cover.
