Seamless and Welded Square & Rectagular Steel Tube
| Size | 20*20~1200*1200mm |
| Standard | JIS G3466-2010, ASTM A500-2000,EN 10210-1/2:2006,EN10219-1/2:2006, GB/T3094-2012,GB/T 6728-2002 |
| STEEL GRADE | Q235B,Q355B、 C、 D、 E、 Q355QD 20# 45# S235-S355 K2H Q360 Q390 AH36 AH40 DH36 EH36 STK400 STK490 |