... ,X65 etc 4.Standard:ASTM,DIN,JIS,EN,BS ProductionAPI 5L x42 ,PSL 1 carbon steel SLAW pipe Brand CHENG MING ... (1/4''-48'')× 1.5mm-60mm Standard GB, AS API 5L x42 ,PSL 1 carbon steel SLAW pipe TM, API ... 5L, API 5CT,DIN, JIS and so on Out Diameter13.7mm- ... 6. spiral steel pipe 7. hot-galvanized steel pipe API 5L x42 ,PSL 1 carbon steel SLAW pipe,BEVELED ends