Roc-Master Shanghai is our Head Office as well as the center of sales、engineering and R&D. Roc-Master is the first Chinese flange manufacturer who can provide design, verification and calculation by mainly using SolidWorks, ANSYS F.E.A software, CAXA Draft Mechanical 2D / CAXA IronCAD 3D. We provide calculations as per ASME VIII, ASME B31.3, ASME B31.8 and DNV-OS-F101.We also have provided design verifications for NORSOK 10000 PSI flanges, subsea swivel ring flanges, anchor flanges, forged subsea barred tees, piggable WYE tees, DSA, Flange Isolating Kits, API flanges and other non-standard forgings. We have good experience in supplying anti-Cl-, H2S piping products such as CS and CRA materials that in compliance with NACE MR0175 & MR0103 requirements. Our HIC, SSC and SCC test reports issued by third party lab have reached more than 200 copies.