Cangzhou Bohai Pipe Co., Ltd. specializing in the production of alloy steel elbow formula [(OD - Wall Thickness) * Thickness] * 0.02466 = kg / m (weight per meter) alloy pipe dimensions and tolerances P22 alloy tube process overview Thermal rolled (extruded seamless pipe): round tube → heating → perforation → three-roll rolling, rolling or extrusion → → set off pipe diameter (or reducing) → cooling → billet tube → straightening → hydrostatic test (or testing) → mark → storage. Cold drawn (rolled) seamless steel pipe: round tube → heating → perforation → Heading → annealing → pickling → oiled (copper) → multi-pass cold drawn (cold) → billet tube → heat treatment → straightening → hydrostatic testing (testing) → mark → storage. Cangzhou Bohai Pipe Co., Ltd. specializing in the production of alloy steel elbow API SPEC5CT-1999 (casing and tubing specification), 90-degree bend steel prices, the American Petroleum Institute (American Petreleum Instiute, 45-degree bend steel manufacturers, referred to as' API ') prepare and publish common around the world. Where: Casing: from the ground surface into his inner drilling, Jiangsu alloy steel elbow, as the lining of the tube wall, by coupling a connection between its tubes. The main material for the J55, N80, P110 and other steel grade, as well as anti-hydrogen sulfide corrosion of C90, T95 and other steel grade. Its low grade (J55, N80) may be welded steel pipe. Tubing: from the ground surface of the insertion tube until the reservoir inner sleeve, or integrally connected by coupling between its tubes. Its role then pumping oil through the pipeline will transport oil to the surface. The main material for the J55, N80, P110, and anti-hydrogen sulfide corrosion of C90, the American Petroleum Institute prepared and published all over the world-wide. Jiangsu alloy steel elbow, Cangzhou Bohai Sea, 180 degree bend steel prices Ltd provided by Cangzhou Bohai tube. Alloy steel elbow Jiangsu, Cangzhou Bohai, the price is 180 degrees bend steel tube Ltd. Cangzhou Bohai (www.czbh628.com) (www.hbbh628.com) this year introduced a new upgrade, the above picture is for reference only, please call Tel or pictures on this page, for the latest information, contact: Zhangsong Wei.