Hunan Great Steel Pipe Co.,Ltd, our main products is SMLS, SSAW, ERW , LSAW Pipe etc. Contact me: ellie()hnssd()com ... , 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 65mm Spiral welded steel pipe: OD:219mm to 3120mm, wall thickness: 3mm to ...