Seamless steel pipe :      OD: 1/4 inch-36 inch, wall thickness:1.25mm to 50mm,
ERW steel pipe :           OD:1/8 inch to 24 inch, wall thickness: max 26.5mm
LSAW steel pipe :         OD:16 inch to 64 inch , wall thickness: max 65mm
Spiral welded steel pipe : OD:219mm to 3120mm, wall thickness: 3mm to 25mm