Size OD: 20x10-300x400mm and 20x20-400x400mm Thickness: 2mm~20mm, Length: 3-12m or as request Steel Material Q195, Q235, Q345, Fe310, Fe360, St33, St37-2, SS330, SS400, STK400, STK500, S235, S275JR, S355, ASTM A53 Standard ASTM, ASME, DIN, GB, JIS, ASNI, BS Usage Construction, bridge, highway, windows of model steel door, machinery, chemical industry, supermarket goods shelf. Ends Usually Plain ,But Can Be Beveled Or By Your Choice Surface Black,Galvanized or According to Customers' Requirements Technique SEAMLESS,ERW and Cold Drawn Section Shape Square or Rectangular Inspection SGB, BV, Lloyds With Hydraulic Testing, Eddy Current , Infrared Test Package In square bundles with standard seaworthy export packing or as request Delivery Less Than 15/20/25/30/40/50/60 Days According To The Quantity Port Tianjin, China Payment L/C, T/T Supply Ability 10000 Ton/Month Others 1) Contract Manufacturing: OEM Service Offered, Design Service Offered, Buyer Label Offered 2) Small quantity is welcome 3) Non-standard products can be ordered 4) A strong production capacity and a large inventory guarantee the quick delivery 5) We have our own steel mill, so business without a third-party