1> Seamless steel pipe size: Od 1/8 inch --14 inch, wall thickness 2mm --60mm.
2> ERW steel pipe size: Od89mm to 820mm, wall thickness: 4mm to 30mm
3> Spiral double-side submerged-arc welded steel pipe, size: Od 219mm to 2000mm, wall thickness: 5mm to 25.4mm
4> Centrifugal casting pipe, size od 203mm-770mm, thickness 30mm-120mm. Length 1-7 meters
5> Hot rolled thick walled seamless steel pipe: Od102mm to 770mm, wall thickness: 15mm to 100mm
6> Precision cold drawn seamless steel pipe: Od20mm to 203mm, wall thickness: 2mm to 30mm the material are a53b, a106b, st37, st45, st52, 10#, 20#, 35#, 45# 40cr, 16mn, 20cr, 40cr, 35crmo, 42crmo, 12crmov, 10crmo910, 12cr1MOV, 15crmo etc.