... Out diameter:219--3220mm 4)ISO9001:2000 API Spiral Welded Pipe StandardBS, JIS, GB, DIN, ASTM, APIStandardBS ... A53-A369, Q195-Q345Grade20#, 16Mn, A53(A,B), A106(B,C), A312, Q235Thickness2 - 65 mmSection ShapeRoundOuter ... OriginHebei, China (Mainland)Secondary Or NotNon-secondaryApplicationOil,Fluid,Boiler,Hydralic,Structure,Chemical--TechniqueHot RolledCertificationAPISurface TreatmentGalvanized, ...