API 5L GrB heat insulation steel pipe,ASME B36.10 OD:10.3-920mm WT:Sch SGP-XXS Length:6m,random length Application:gas pipe API 5L GrB heat insulation steel pipe,ASME B36.10OD:10.3-920mmWT:Sch SGP-XXSLength:6m,8m,10m,15m,random lengthApplication:drill pipe,oil pipe,dyraulic pipe,chemical fertilizer pipe etc.API,PED,ISO certificate,DIN,JIS,BS,GOST standardsurface treatment:3lpe coating/black color ...