Roc-Master Flange Co., Ltd. is a professional manufacturer and supplier of piping products. We have more than ten years' experience in serving for the projects related to oil and gas, offshore, petroleum, petrochemical, and marine industries.
Our production scope is listed as follows:
Forged flanges:
1) Material:
Carbon Steel:
ASTM A105, ASTM A350 LF2, LF6
High Yield Strength Alloy Steel:
ASTM A694 F52, F60, F65, F70,
Stainless Steel:
ASTM A182 F304, 304L, F316, 316L, F321
Duplex and...[Click for details]


