Galvanized Square Rectangular Carbon Steel Tube Q195 Q235 Q345
| Attribute | Value |
|---|---|
| Products Name | Metal Building Materials Black Square And Rectangular Carbon Steel Tube |
| Key Words | Galvanized Steel Pipe |
| Surface treatment | Galvanized, Black Oil Surface |
| Thickness | 0.5 - 20 mm |
| Section shape | Square, Rectangular |
| Grade | Q195, Q235, Q345 |
| Application | Structure Pipe, Gas Pipe |
| Length | 1-12m |
Square pipe refers to both square and rectangular steel tubes with equal or unequal side lengths. Manufactured from rolled strip steel through processes including unpacking, leveling, crimping, and welding to form round pipes which are then shaped into square tubes and cut to required lengths.
Widely used in construction, machinery manufacturing, steel structures, shipbuilding, solar power supports, power engineering, power plants, agricultural machinery, glass curtain walls, automotive chassis, airports, boiler construction, highway railings, pressure vessels, petroleum storage tanks, bridges, power station equipment, and lifting machinery.
| Product Name | Square Rectangular Pipes |
|---|---|
| Size | Rectangular Tube: 10*20-120*80mm Square Tube: 16*16-250*250mm |
| Length | 6m or custom lengths available |
| Standard | EN10210, EN10219, DIN17100, ASTM A36, JIS G3466 |
| Materials | Q195, Q235, Q235B, Q275, Q345B, S235, S235jr, S355, S355jr, SS400, SS330, STK490, St33, St37, St52/ ASTM A36, A53, A106 |
| Surface | Oil, bare, black paint, galvanized |
| Outer Diameter | 1/2"~8" (20~219mm) |
|---|---|
| Thickness | 0.8~2.75mm |
| Zinc Coating | 40~275g/㎡ |
| Tolerance | OD: ±0.5mm | WT: ±0.05mm | Length: ±20mm |
| Material | Q195, Q215, Q235, Q355, Gr.A, Gr.B, S235-JRH, STK400, STK500 |
- Corrosion resistance: Galvanized coating provides excellent rust prevention through both barrier protection and cathodic protection
- Excellent cold bending and welding performance: Made from low carbon steel grades with good formability and weldability
- High reflectivity: Effective heat barrier properties
- Durable coating: Metallurgical structure withstands mechanical damage during transport and use
| Square Hollow Section (SHS) | WT (mm) | Rectangular Hollow Section (RHS) | WT (mm) |
|---|---|---|---|
| 16*16 | 0.8-1.5 | 20*40 | 0.8-2.0 |
| 19*19 | 0.8-2.0 | 25*50 | 0.8-2.0 |
| 20*20 | 0.8-2.0 | 30*40 | 0.8-2.0 |
| 25*25 | 0.8-2.0 | 30*50 | 0.8-2.0 |
Standard export packaging suitable for all transport methods. Available in hexagonal seaworthy bundles with steel strips or bulk packaging. Custom packaging options available upon request.
- 20ft container: max length 5.85m without coupling, 5.8m with coupling
- 40ft container: max length 12.0m or 6.0m in two rows
- Bulk carrier: no length restrictions
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