... pipe Material: X42, X52, X46, X56, X65, X70, L235 Q235B, Q295B, Q345BStandard: API 5L, SY/T 5037, GB/T 9711 Material ... /T 5037, GB/T 9711 219-2420mmSpiral Welded Pipe 1) Material: X42, X52, X46, X56, X65, L235 ... special requirement and application of steel pipe, we can provide different anti-corrosion ... protection for steel pipe and pipe with flange. External coating: -multi- ...