Large diameter thick wall steel pipe, special thick wall seamless steel pipe straight seam tube, ring welded butt pipe, t-welded pipe, coil material: Q235B, Q345B, 20#, 45#, 16Mn, L245, L290, L360, the implementation standard is: GB/T50205-2001, GB/T3092-2001 and so on. The annual production capacity of the coil pipe is twenty thousand tons, large scale pipe, thick wall coil pipe, plate coil steel pipe, thick wall hot coil pipe, thick wall coil pipe factory www.ytzhcg.com/admin88