Costa steel ERW steel pipe series mainly have HFI (High Frequency Induction); EFW(ELECTRIC FUSION WELDED TUBE); HFW(High-Frequency Welding). Pipe’s type mainly focusing on : Mechanical and Construction Round pipe; Structural Square Rectangular pipe; Hot dipped galvanized steel pipe; Plastic Steel Composite Pipe;Hollow Section Scaffolding Tube.
ASTM A53 for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
DIN 2458 Welded steel pipe and tube
EN10217 Welded steel tubes for pressure purposes.
API 5L Line Pipe
ANSI/AWWA C104/A21.4: Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water
ISO 21809: External coatings for buried or submerged pipelines used in pipeline transportation systems
DIN 30670: Polyethylen coatings of steel pipes and fittings
EN10217: S235JR,, S275, S275JR, S355JRH, S355J2H, St14, St33, St37, St44, ST52,etc.
ASTM A 53: Gr. A, Gr B, Gr C, Gr.D
API 5L: A, B, X42, X46, X52, X56, X60, X65 X70
ERW, HFI, EFW Size Range:
Outer Diameter: 6mm-610mm (1/16"-24")
Wall Thickness: 0.3mm-22mm
End: square ends (straight cut, saw cut, and torch cut). or beveled for welding, beveled;
Surface: Lightly oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating/Anti rust oil, Protective Coatings.