Standard: ASTM, DIN, GB, ANSI A213M-2001, ASTM A210-1996, ASTM A254-1997, DIN 17175, GB/T8162, GB/T8163 Grade: 10#-45#, 16Mn, CrNi alloy, Q195-Q345, 10#, 20#, 45#, 16Mn, 1Cr13Mn9Ni1N, Q195, Q215, Q235, Q345 Thickness: 1.2 - 4.0 mm Section Shape: Rectangular Outer Diameter: 15-300mm Place of Origin: Hebei, China (Mainland) Secondary Or Not: Non-secondary Application: Structure Pipe Technique: Hot Rolled Certification: SGS Surface Treatment: black Special Pipe: mild steel pipe Alloy Or Not: Non-alloy Product name: Rectangular steel pipe Keyword: Ms Square Tube Surface: Black Painted Type: CYLINDER TUBE Shape: Rectangle Material: Q195/Q215/Q235/Q345 End protector: Iron Protector Name: Popular Usage: Construction Structure Length: 6-12m