The range of our products: Seamless steel pipe :OD: 1/4 inch-36 inch, wall thickness:1.25mm to 50mm, ERW steel pipe/ HFI 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 65mmS piral welded steel pipe: OD:219mm to 3120mm, wall thickness: 3mm to 25mm