Product Specification
| Type | Cold-drawn Welded Special-shaped Steel Tube |
| Shape | Special-shaped |
| Surface Treatment | Bared, Black Painted, Galvanized, Oiled or to your requirements |
| Out diameter | 20-200mm, other sizes negotiable |
| Wall Thickness | 1.2mm-13mm , other sizes negotiable |
| Length | 4-12m or as request |
| Tolerance of OD | ±0.1mm |
| Tolerance of Straightness | ≤1mm |
| Technical Standard | GB/T 13793, GB/T6728-2017, GB/T3254, GB/T912, GB/T1591,etc. |
| Material | Q235B/C/D/E, Q345B/C/D/E, Q390C/D/E, Q420C/D/E, Q550C/D/E, Q690C/D/E, 370L/420L/440L/510L/550L/ 610L/700L/750L/800LQSTE380-700；S355-960MC |
| Technique | Cold-bend High-frequency |
| Supply Ability | 5000 tons |
| Payments Term | T/T or L/C |
| MOQ | 1 ton |
| Delivery condition | As-Welded, Annealed, Normalized, Cold-Rolled |
Product Description
Cold drawn Special-shaped steel tubes are manufactured by drawing metal tubes into non-circular cross-sections such as oval, triangle, hexagon. These products offer high dimensional accuracy, smooth surface finish, and enhanced mechanical properties. Ideal for applications requiring specific geometries, they can be customized according to drawings. We offer one-stop mold design and production services, compatible with carbon steel, stainless steel, and other materials.
Application
- Automation machinery rails and structural frameworks
- Architectural profiles, railings, curtain wall systems
- Agricultural machinery and solar PV mounting systems
Advantages
| 1.High Dimensional Accuracy | Tight tolerances and uniform dimensions make them ideal for precision applications. |
| 2.Superior Surface Finish | Smooth surface is suitable for coating, plating, or visible decorative parts. |
| 3.Custom Shaped Profiles | Custom shapes such as oval, D-type, hexagon, trapezoid, and more are available. |
| 4.Enhanced Mechanical Properties | Cold drawing improves strength and hardness for structural use. |
| 5.Lightweight Structural Optimization | Shaped cross-sections allow better load-bearing with less material. |
| 6.Cost-Effective Compared to Seamless Shaped Tubes | More economical than seamless shaped tubes while maintaining structural performance. |
Customization
With in-house tooling, material sourcing, and technical support, we offer flexible customization to meet your specific needs:
- Dimension Customization: Non-standard diameter, thickness, and length
- Material Options: Carbon steel, stainless steel
- Processing Services: Cutting, logo marking
- Surface Treatment: Painting, shot blasting, oiling, galvanizing
- Marking & Packaging: Custom logo, labels, and packaging options
We support drawing-based production, small batch trial orders, and fast sample delivery to help your projects start quickly.
Packaging & Delivery
We provide professional packaging and flexible delivery options based on your product and shipping needs:
- Packaging Methods:
- Steel-strapped bundles with labels
- Plastic wrap + woven fabric cover
- Export-grade wooden cases or pallets
- Plastic end caps for tube protection
- Delivery Options:
- Sea freight, truck transport, or rail shipment
- Common ports:
- Shanghai, Changsha
- Lead Time:
- Standard sizes: 7–15 days
- Custom orders: 30–45 days
Export documents such as CO, CQ, and third-party inspection reports are available upon request.
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FAQ Section
Q1：Does cold drawing affect weld seam strength?
A1：No. Our tubes are high-frequency welded and cold drawn to refine the seam, achieving mechanical strength close to the base metal.
Q2:Can you provide samples?
A2:Yes, short-length samples are available with freight collected. For custom shapes requiring new tooling, die cost may apply.
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