Dia: 30*30-800*800mm, Thickness: 3-40mm Material: Q235B, Q345B, 20#, ST37/44/52, ASTM A53/106,STKR490/400 Standard:GB/T 3094-

Features:

1) Dimentions: 30*30mm-800*800mm,  Thickness: 3-40mm        Length: <13m

2) Material: Q235, Q345, 20#, ST37, ST44, ST52, ASTM A53, ASTM A106,STKR490

3) Standards: JIS G 3466, DIN EN 10210, DIN EN10219, ASTM A500, GB/T 3094-2000, GB/T 6728-2002

4) Use: construction structure, machinery making, container, hall structure, sun seeker, offshore oil field, sea trestle, motorcar cassis, airport structure, shipbuilding, automobile axle pipe and so on.

5) Packing: square shape bundles wrapped with strong steel strip or according to customers'  requests

6) Surface: oiled or black painted to prevent rust

7) Plain or beveled ends

8) OEM available                

9）Certificates: CE,CC

Constructural square steel hollow sections