Spiral Steel Pipe

*STD: API-5L GB/T9711.1-1997 GB/T9711.2-1997 SY/T5037-2000 SY/T5040-92
*MAT: L245~L555 Q235 Q345 20#
*Grade: X42~X80
*W.T: 5~26mm
*O.D: 219~2222mm