1.API 5L spiral steel pipe/ERW pipe/welded tube. 2.OD:12.7mm-2820mm,WT:0.5mm-25mm,Length: ... &ISO certification. API 5L spiral steel pipe/ERW pipe/welded tube.1.API 5L spiral steel pipe1)Standards: SY/T5037-2001 ... , Residential, Ornamental Pipes 2>Agriculture Agricultural Equipment 3>Industry Machinery, Solar Stent, Offshore Oil Field, Mine Equipment, Electromechanical Hardware, , heavy engineering ...