API-5CT Seamless Tubing Pipe & OCTG Oil Casing

　　Technique: Hot Rolled

　　Surface Treatment: Varnishing

　　Section Shape: Round

　　Specification: 2-3/8"to 20"

　　Oil casing pipes according to the steel grade there have J55, K55, N801, N80Q, L80 1, L80 13Cr, C90, T95, P110, Q125 etc. Base on the sizes there have 4-1/2 、5 、5-1/2、 6-5/8 、7、 7-5/8、 8-5/8 、9-5/8 、10-3/4、 11-3/4 、13-3/8 、16 、18-5/8 、20 etc. By the type of NPT, there have LC, STC, BC and special NPT etc. Quality today is the Market tomorrow. Best price is the key point for clients to win more orders. We had established scientific quality assurance system. And obtained certificates of ISO9001:2008, The special equipment manufacture permit. API5CT, CCS,HSE quality management system. ISO14001：2004 environment and OHSAS18001 etc. Serious and effective scientific management and best quality guarantee system promised the pipes’ quality. STR pipes had been exported South Africa, Middle East, Europe and America. Etc. STR pipes enjoy a good reputation in home and abroad.