(Straight seam large diameter thick wall volume control) ten billion Hebei Steel Pipe Manufacturing Co., Ltd. production of large caliber seam steel piles in the penstock and the engineering and structure with volume control, the volume can produce φ 400mm ~ φ is 3000mm, wall thickness of 7mm - 80mm, Q345B, Q235B, 245R, and X-grade steel material, vertical and circular seam welding pressure T-welded steel pipes, T-welded roll pipe products manufactured in the form as follows: width of 2 m to 3 m steel plate, made into a 2 m / section ~ 3 m / section of a single section, and then welding required for each length. The material is mainly of Q235B Q345B, 20 # 16 manganese melt. Products used in petrochemical, natural gas, bridges, structural steel piling pipe, city water supply and drainage, sewage and construction of pile and large facilities and structural steel construction projects. To produce various models of elbows, tees and pipe fittings. Is our responsibility and obligation to provide you with the price of high quality end of the pipe, Welcome to negotiate business! Tel :0317-5128533 Mobile: 13323270092 Fax :0317-6322267 Contact: Wang Yuehong Website: http://www.baiyipipe.com