The Roc-Master Advantage
Roc-Master - one of the most experienced professional manufacturer of CRA CLAD pipes, flanges, fittings and bends as well as forged flanges in all materials, special subsea forgings, and all type of fasteners, coated bolts & nuts, Roc-Master is also a supplier who provides Weld Overlay, precision machining services, as well as prefabrication (spooling) for clad and nonclad components. Furthermore the company is an OVERALL SUPPLIER for the total packages used in the onshore, offshore, oil & gas industries, chemical and petrochemical industries.
In May 2009, Roc-Master successfully got a duplex piping products order for CNOOC (China) limited (Zhanjiang) Yacheng PFA project (It was the Yacheng wellhead manifold reforming and pipeline tied-back engineering). The products in this order included ASTM A815 UNS S31803 API 5000PSI BW & Forged pipe fittings, ASTM A182 F51 2500LB flanges and their ancillary fasteners of ASTM A453 GR660 with XYLAN 1424 green coating. 
In Nov, 2008, The flange installation instruction prepared by our technical dept. lays a foundation for better improving the quality of after-sales services. please go to our 
