Seamless Steel Pipe Standard: GB/T3639,8162,3087,ASTM A106,A192, BS3059,3601, ... ,40Mn4By BS:040A10,12,040A12,080A15,20,070M26,080M30,36,40,46,50,070M35,60,080A67,72,78,81,080A15,20 ... ,080M30,40,47,50By JIS:SPHD,SPCC,SPCD,SPCE3.Size: O/D ... Wall thickness 0.5-40mm4.Packing: exporting packing Seamless Steel Pipe