Black Square steel pipe Size:15x15-600x600mm Thickness:0.4-12mm Material: ... Steel GradeQ195-Q345, st37-2, SS400, ASTM.A53, 20#, ect.StandardGB3091-2001, GB/T 9711.2, ASTM A53, ASTM A106, EN10216, EN10219, ect.CoatingOiled, Z-coating, black ... 20-45 days after deposit Other productsWelded steel pipe,square/rectangular hollow section,seamless steel pipe, steel strip, steel coil, square bar,flat bar, egual ...