Square tube carbon steel pipe black hollow section carbon steel Q235 square metal tube
Raw Material
Seamless |
Pipe Billet( Hot Rolled, or Con-casting), Mother Pipe |
Welded |
Hot Rolled Steel Coil (HRC) , Cold Rolled Steel Coil (CRC), Pre-pained Galvanized Steel Strip |
End |
Square cut, Burr removed |
Surface |
Lightly oiled, Hot dip galvanized, Electro galvanized, Black |
Heat Treatment |
Bright Annealed, Black Annealed |
Packing |
Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips |
Test |
Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yieldstrength, Elongation), Technical Properties (Flattening Test, Flaring Test, Bending Test, Hardness Test, Blow Test, Impact Test etc), Exterior Size Inspection |
Mill Test Certificate |
EN 10204/3.1B |