... standard: ASTM A500,EN10219,EN10210 3. origin:Tianjin,China Square Hollow Section-------Tianjin Yuanlitai Steel Pipe Co., Ltd.Our Steel Pipe ... (MM)Rectangular Pipe (MM)Oval Pipe (MM)LTZ Pipe (MM)Outside Diameter10-254010*10-600*6008*16-300*4009.5*17 ... air and non-hazardous gases,pressure purposes,applies to structural hollow sections, general structure purpose and pressure service etc.Shipment ...