... square and rectangular steel tube 1.steel grade: Q195-Q345,S235-S355 2. standard: ASTM A500,EN10219,EN10210 Tianjin Yuanlitai Steel Pipe Co ... coating, Bare, varnished, zinc coating, anti-corrosion, 3PE/PP/EP/FBE, etc.EndPlain end, beveled, cut square, grooved ... 59526228Fax:0086-22-59526228Mobile008613682110602Only Provide Stable Quality and Trustful Serviceseamless square and rectangular steel tube