Detailed Product Description Carbon Steel Seamless Pipes and Tubes ASTM1.seamless steel pipe ASTM A53 GR.B,Size:1/4"-36"2.High ... -temperature operation samless steel pipe ASTM A106 GR.B,Size:1/4"-36"3.Linepipe API 5L,Grade ... .2mm5.ASTM A179,A1926.-40°-101°ASTM A333,:GR.A,GR.1,GR.6,GR.7,GR.3,:1/4-28,13.7-711.2mm7 ...