... " 3. WT0.281"-0.365" 4.Certification: ISO % API NAPI 5L pipe1.Standard: API,BS,DIN,ASTM 2.OD:21.3-830 ... mm 3.Thk:2.0-60 mm 4.Certification: API 5L,API 5CT 5.Payment terms:T/T L/CSeamless steel pipe ... 1. We produce API 5l pipe 2.OD:21.3-830mm3. WT:2.0 ... -60mm4.Certification: API 5L API 5CT TypeAPI 5L PipeStandardAPI 5LGradeA,B, X42,X46,X52, X60 ...