Minjie Steel
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| Product name | hollow section square tube |
| Wall Thickness | 0.7mm–13mm |
| Length | 1–14m According to customer requirements … |
| Outer Diameter | 20mm*20mm—400mm*400 |
| Tolerance | Tolerance based on Thickness: ±5～±8%; According to customer’s request |
| Shape | square |
| Material | Q195—Q345, 10#, 45#, S235JR, GR.B-D, STK500, BS1387…… |
| Surface treatment | black |
| factory | yes |
| Standard | ASTM, DIN, JIS, BS |
| Certificate | ISO, BV, CE, SGS |
| Payment terms | 30%T/T deposit in advance, 70% balance after B/L copy; |
| Delivery times | 25 days after receive ur deposits |
| Package |
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| Loading port | Tianjin/Xingang |
The square tubes come in outer diameters ranging from 20mm*20mm to 400mm*400mm, with wall thicknesses available between 0.7mm and 13mm.
We support a wide range of steel grades, including Q195—Q345, 10#, 45#, S235JR, GR.B-D, STK500, and BS1387, depending on your project needs.
Our products are manufactured according to ASTM, DIN, JIS, and BS standards, and are certified under international bodies including ISO, BV, CE, and SGS.
They are packed in secure bundles or packaged according to your specific instructions. Delivery typically takes about 25 days after deposit confirmation, loading at the Tianjin/Xingang port.
We offer flexible lengths from 1 to 14 meters according to custom requirements. Standard payment terms are a 30% T/T deposit in advance, with the remaining 70% balance paid after receipt of the B/L copy.
