Standard: API 5L-2009 ISO 3183-2007 DIN 30670 ( Coating) Steel Grades: Gr. B X42 X46 X52 X56 X60 X65 X70 L245 L290 L320 L360 L390 L415 L450 L480 Size Range: OD:1/2” TO 36”. WT: 3mm To 45mm Coating Thickness: 2mm- 5mm Manufacturing Process : Hot Rolled / ERW /LSAW Application:The external coating is mainly used for anti-corrosion protection for liquid pipes before burying.Such pipes has been widely used in rugged environment Packing: External Black Painting ,Both Side With End Caps, In Bundles by Steel Strips,Covered by Waterproof.