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 ... Sports Apparatus, Leisure Equipment, Furniture, School Furniture 5>Material Storage Racks, Pallets, Hydraulic Platforms, Trusses, Columns, Purlins, Greenhouse Stands Towers API ...