Special Shaped Steel Welded Tube refers to welded steel tubes manufactured into non-standard, customized geometric cross-sections. Unlike standard circular or square hollow sections, these tubes are fabricated to meet specific design and structural requirements where conventional shapes are insufficient. This category includes various products, such as the Special Shaped Carbon Steel Tube, the Special Profile Carbon Steel Pipe, the Custom Shaped Carbon Steel Tube, and the Irregular Carbon Steel Welded Tube. These products are engineered through advanced welding techniques, primarily using high-frequency induction welding or submerged arc welding, to ensure superior weld integrity and dimensional accuracy. They are essential in industries demanding unique structural solutions, offering enhanced load-bearing capabilities, material efficiency, and design freedom where space constraints or specific functional needs exist. Common applications span architectural frameworks, specialized machinery, automotive chassis components, agricultural equipment, and custom furniture, where their unique profiles provide critical advantages over standard tubing.
The Special Shaped Steel Welded Tube is defined by a comprehensive set of technical parameters that determine its performance and suitability for specific applications. These parameters are critical for engineers and procurement specialists during material selection.
| Parameter | Specification Range / Description |
|---|---|
| Cross-Sectional Shapes | Oval, rectangular with rounded corners, D-shape, triangular, trapezoidal, hexagonal, and fully custom profiles based on client drawings. |
| Wall Thickness | 0.8 mm to 12.7 mm (0.0315" to 0.5"), with tighter tolerances available for precision applications. |
| Outer Dimensions (Major Axis) | 20 mm to 500 mm (0.79" to 19.7"), customizable beyond this range for specific projects. |
| Length | Standard random lengths of 5.8m to 12m (19' to 40'); cut-to-length services available per exact requirements. |
| Welding Standard | High-frequency electric resistance welding (HFW/ERW) or Submerged Arc Welding (SAW) for thicker walls, ensuring seamless weld bead and full penetration. |
| Surface Finish | Mill finish (bare), pre-galvanized (zinc-coated), hot-dip galvanized, painted, or powder-coated as specified. |
| Tolerances | Strict adherence to ASTM, EN, or JIS standards for outside dimensions, wall thickness, straightness, and twist. |
| Mechanical Properties (Typical for Carbon Steel) |
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