... 150mm Thickness 1-20mm 3.length 6-11m or as you need 4.ISO9001 and API ... Color Paint, 3PE; Or Other Anti-corrosive Treatment Technoque Hot rolled, Cold rolled, Cold-formed,ERW,High-frequency welded,Seamless,SAW, Bussiness way ... FOB ,EXW , CIF,CIP Inspection SGS or CIQ the cold-rolled precision seamless steel ...