square hollow tube is our mainly item,and we have exported to many countries.

square steel pipe:
1)standard: GB/T3094-2000, GB/T6728-2002, JISG3466 , ASTM A500, DIN EN10210, DIN EN10219 
2)material:Q195, Q215,Q235, Q345, 16Mn,10#,20#
3)OUTER DIAMETER:10*10-600*600mm
4)WALL THICKNESS:0.6-25mm
5)Length:5.8-12meter or as customer's request
6)Packing:standard export packing in bundles
7)surface:hot dipped gavanized,oiled or black painted to prevent rust.
8)Usage: stent walls, shelf ,ship building, machinery manufacturing, automobile axle tube, solar power generation equipment stent,steel furniture.