Support Activities for Oil and Gas OperationsBolt, Nut, Screw, Rivet, and Washer ManufacturingMachine Tool (Metal Cutting Types) ManufacturingFastener, ...
Weld Neck,Slip-On,Blind,Socket,Weld,Orifice Flange,Swivel Ring Flange,Anchor Flange,Spade&Spacer,Spectacle Blinds Etc.
ASME、API、BS、JIS、DIN、UNI、GOST ...