Cangzhou High Booming can supply square hollow section/square tubes according to standards like: GB/T3094-2000, GB/T6728-2002, EN10219, EN10210, ASTM A500, JIS G3466 etc.
You may check the production flow chart as below to get more:
1) Dimensions: 30*30mm-400*600mm, Thickness: 2-25mm Length: <13m
2) Material: Q195, Q235, Q345, 20#, 16Mn, ST37/44/ST52, ASTM A53/106, STKR490/STKR400, ASTM A500 GR, S355, S275, S235
3) Standards: JISG 3466, DIN EN 10210, DIN EN10219, ASTM A500, GB/T 3094-2000, GB/T 6728-2002
4) Applications: construction structure, machinery making, container, hall structure, offshore oil field, sea trestle, motorcar cassis, airport structure, shipbuilding, automobile axle pipe and so on.
5) Packing: in bundles with strong steel strips or according to customers' requests
6) Surface: oiled or black painted to prevent rust
7) OEM available
8)Certificates: CE,CCS
9) Mini order: 30MT for S355JR; 80MT for S355JO,S355J2H