Detailed Product Description Cold-rolled rectangular pipe 1.grade:Q195-Q345 2.specification:50*30-500*300mm 3.thickness:2.0-16.0mm 4.length:4-12mm EN10219 JIS G3466 GB/T6728-2002 ASTM A500 Product Name Steel Square Tube Size: Square Tube Size: 40*40-400*400mm Rectangular Tube Size: 50*30-500*300mm Thickness: 2~16mm, Length: 6-12m Or Other Sizes According To The Contract Steel Grade Q195-Q235,Q345,Q390,16Mn,(Chinese Standard, Other Material Can Also Be Provided) Standard ASTM, ASME, DIN,GB,JIS,ASNI,BS Usage Used For Structure, Automotive,Machinery,Airport, Railway And Construction and so on. Ends Usually Plain Or By Your Choice Surface Bared Or With Oiled Or Client Option Technique ERW ,Hot Rolled and Cold Rolled Type Welded Welded Line Type Longitudinal Section Shape Square or rectangular Inspection With Hydraulic Testing, Eddy Current , Infrared Test Certification EN ,CE, ISO9001 Package Bags, Bundle, In Bulk, Containers Or With Other Clients' Requirements Date of Delivery Less Than 15/20/25/30/40/50/60 Days According To The Quantity Port of Shipment Qingdao / Tianjin, China Payment L/C T/T Others We can also offer special tubes as your requirement! Our products are of high quality but low price.