... 4.Standard:ASTM,DIN,JIS,EN,BS ProductionAPI 5L x42 ,PSL 1 carbon steel SLAW pipe Brand CHENG MING Specification 13 ... ''-48'')× 1.5mm-60mm Standard GB, AS API 5L x42 ,PSL 1 carbon steel SLAW pipe TM, API 5L, API 5CT ... steel pipe 7. hot-galvanized steel pipe API 5L x42 ,PSL 1 carbon steel SLAW pipe,BEVELED ends