OREANDA-NEWS. May 17, 2011. X100 steel grade UOE longitudinal submerged welded pipe with the largest wall thickness and diameter in China is successfully trial manufactured in Baosteel, reported the press-centre of Baosteel.

To satisfy Chinese petroleum industry's development demand of transporting high pressure natural gas with more economic approach, Baosteel carried out the R&D and trial manufacture of X100 steel grade UOE longitudinal submerged welded pipe with the large wall thickness and diameter on the basis of sufficient investigation of customers' demands.

With the joint efforts of Baosteel Research Institute, Baosteel Co., Ltd. Manufacture Department, Steel-making Plant, Heavy Plate Plant, Steel Tube, Pipe and Bar Business Unit and Baosteel Industrial Inspection Co. Ltd., X100 steel grade UOE longitudinal submerged welded pipes with a wall thickness of 23.5mm and an outside diameter of 1219 mm were successfully trial manufactured, which are the X100 steel grade UOE welded pipe with the largest wall thickness and diameter in China at present. The success will further enhance China's manufacture level and international competitiveness of high grade pipeline steel and line pipe, and lay a solid foundation for the commercialization of X100 line pipe in the next step.