Structure Pipe, Other Outer Diameter:21.3 - 610 mm Thickness:0.6mm-25mm Standard:ASTM A53,A106, BS1387,GB/T3091,9711, Grade: A,B,Q235,Q345 Manufacture method: Seamless pipe (hot rolled, hot expended), welded pipe (ERW/HFW electric resistance/high frequency welded) Length: 12M,11.8M, 6M, 5.8M, DRL,SRL Surface Treatment: Galvanized Shape:Round Section, Square or rectangular Packing: Caps on two ends of every pipe to protect the end bevel, In hexagonal shape bundles wrapped with strong steel trip 2MT/bundle for size below DN200/8”, bare packing for DN200/8” and above . Application: Water transportation, fir fighting.