Standard: ASTM, GB, JIS, ASTM A210-1996, GB/T 8162-1999, GB/T 8163-1999, JIS G3444-2006 Grade: 10#-45#, 16Mn, Q195-Q345, 10#, 20#, 45#, 16Mn, Q195, Q215, Q235, Q345 Thickness: 1.2 - 2.0 mm Section Shape: Square 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: EMT Pipe Alloy Or Not: Non-alloy Product name: Tube Keyword: Ms Square Tube Length: 6-12m Surface: Black Type: CYLINDER TUBE Name: Popular Shape: Square Section Material: Q195/Q215/Q235/Q345 Usage: Construction Structure End protector: Iron Protector