Slip-on welding flange;welding nece flange;socket welding flange;
threaded flange;lapped flange;blind ;spectacle blind,etc.

Petroleum, chemical, power, gas, metallurgy, shipbuilding.
construction,water and nuclear power etc.

MATERIA:Carbon steel Such as ASTM A105;
Alloy steel:such as ASTM A182 F1, F5, F7, F9, F11, F12, F22,
Stainless steel: such as ASTM A182 F304/304L, F316/316L

ANSI, ISO, JIS, DIN, BS,GB, SH, HG,QOST,ETC.