| Product name | Promotion 40x40mm 6m length black iron square tube steel pipe for construction | 
| Grade | Q195,Q235,Q275,Q345 ; 20#,45# ; S235,S355; St33,St37,St52; A500,A513,A106 | 
| Technique | Hot Rolled, Cold Rolled, ERW, High-frequency welded, Extruded | 
| Surface | Bared, Oil, Galvanized, Paint | 
| Length | 6m, 12m, or according to customers requirements | 
| Package | Export seaworthy packing or as customer's request | 
| Place of origin | China mainland | 
| Application | Machinery manufacture, Roads and Bridges, Construction, Transportation | 
| Shipment | Bulk vessel or container | 
| Payment term | TT or LC at sight | 
| Delivery | In 15 days after receipt of L/C or TT | 
              






