Common flanges and codes

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Common flanges and codes
Today, we will share the classification of chemical industry (HG) in Fa Lan:
Plate welding flange (PL), neck welding flange (SO), neck welding flange (WN), integral flange (IF), socket welding flange (SW), threaded flange (Th), butt welding loose flange (PJ/SE), flat welding loose flange (PJ/RJ), flange cover (BL), lining flange cover (BL ‹ S ›)