We, hefei zijin steel tube manufacturing co., ltd. Is established in the year 2004 and is specialized in the developing and manufacturing of the large-diameter thick-wall straight-seam longitudinally submerged arc welded carbon steel pipes including oil & gas line pipe, rolled steel pipes, joist frame structure pipes, machinery roller -making pipes, concrete filled steel tubular structure, fluids conveying pipe, structure building pipes. The dimension of our products covers such a scope as followings: For oil and gas pipes: Grade: x80 or/and lower, diameter: ª¦406-1524mm, wall thickness: 6-40mm, unit length: 8-12m For structural pipes: Diameter:ª¦350-1600mm, wall thickness: 6-60mm unit length:6-12m For rolled pipes: Diameter: ª¦1200-3800mm, wall thickness:12-120mm, maximum unit length: 3.2m
