... ,STD XSAPI5LGR.B/X42,X52,X605.8m,6m,5m to 12m randomERW Steel pipe8" to 28"SCH20,30,40,60,STD XS,80ASRM ... A53GR.B5.8m,6m,5m to 12m randomSpiral steel pipe8" to 36"SCH20,30,40,60,STD XS,80AY ... steel pipe 2. ERW steel pipe 3. steel casing 4. tubing 5. hot-rolled steel pipe 6. spiral steel pipe 7. hot-galvanized steel pipe SpecificationsChina StandardSteel GradeStandardseamless steel ...