Our Black Rectangular Steel Tube offers a robust and versatile structural solution, characterized by its distinctive flat black finish. This aesthetic not only provides a clean, modern look but also serves as a basic protective layer against minor corrosion during storage and handling. Often specified for visible architectural elements and industrial frameworks, it delivers a combination of strength and visual appeal. For applications requiring enhanced durability and a unique aesthetic, the Striped Rectangular Hollow Section is an excellent alternative, featuring a striped pattern that can improve grip and add a distinctive texture. When the highest quality surface condition is paramount, our Black Finished Rectangular Tube provides a superior, more consistent finish, ideal for high-visibility applications. Meanwhile, the Striped Rectangular Steel Pipe merges the structural benefits of a rectangular profile with the surface advantages of striping, offering a practical choice for both mechanical and construction uses.
The consistent quality of the **Black Rectangular Pipe** is rooted in precise manufacturing control, starting with high-grade steel. It is formed through a controlled process of roll forming and electric resistance welding, ensuring uniform wall thickness and superior dimensional accuracy. This results in a hollow structural section (HSS) with excellent load-bearing capacity and torsional resistance compared to other profiles. The **Black Rectangular Pipe** is typically supplied in standard mill lengths but can be custom-cut to specification, facilitating efficient fabrication and reducing on-site waste. Its geometry allows for clean, simple connections, making it a preferred material for fabricators and builders seeking efficiency and reliability in their structural designs.
Understanding the precise parameters is crucial for specifying the correct product for your project. Below are the common specifications for our Black Rectangular Pipe range.
| Dimension | Tolerance (for typical sizes) | Standard Reference |
|---|---|---|
| Outside Dimensions (Width & Height) | ± 0.5% or ± 0.8mm, whichever is greater | ASTM A500 / ASTM A1085 |
| Wall Thickness | ± 10% of nominal wall | ASTM A500 |
| Length | +10mm / -0mm for cut lengths | Common Mill Practice |
| Straightness | ≤ 1.6mm per meter of length | ASTM A500 |
| Squareness of Ends | ≤ 1° from 90° | Common Fabrication Tolerance |