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| Property | Parameter | Description |
|---|---|---|
| Product Name | Special Section Steel Pipe | Non-circular hollow section steel tubing with custom profiles |
| Material Grade | Q235B / Q345B / S235JR / S355JR / ASTM A500 | Multiple carbon steel grade options available |
| Standard Compliance | ASTM A500, EN 10219, EN 10210, GB/T 6728 | Meets major international structural steel standards |
| Manufacturing Process | Cold-formed / Hot-formed / Welded | ERW or seamless production methods |
| Carbon (C) | ≤0.22% | Carbon content per Q345B / S355JR specification |
| Manganese (Mn) | ≤1.60% | Enhances strength and hardenability |
| Silicon (Si) | ≤0.55% | Deoxidizer for improved steel quality |
| Phosphorus (P) | ≤0.035% | Controlled for ductility and toughness |
| Sulfur (S) | ≤0.035% | Low sulfur for improved weldability |
| Tensile Strength | ≥470 MPa | Minimum tensile strength per Q345B / S355JR |
| Yield Strength | ≥345 MPa | Minimum yield strength at room temperature |
| Elongation | ≥21% | Ductility in 50mm gauge length |
| Profile Shapes | Elliptical, D-shape, Triangular, Hexagonal, Flat-sided Oval, Semi-circular | Custom special cross-section profiles available |
| Dimension Range | 20mm - 500mm (major axis) | Outer dimension across the largest profile axis |
| Wall Thickness | 1.0mm - 25mm | Standard and custom wall thickness options |
| Length | 5.8m - 12m or custom | Standard and cut-to-length available |
| Surface Finish | Black, Galvanized, Painted, Oiled | Multiple surface treatment options for corrosion protection |
| Application | Architecture, Furniture, Machinery, Automotive, Guardrails | Structural and decorative applications across industries |
| Certification | EN 10204 3.1, ISO 9001, CE Marking | Quality certifications provided with shipment |
| MOQ | 5 tons | Minimum order quantity for standard profiles |
Acceptable Quality Oval Tubes, Communication Delay at Start
Ordered 11 tons of oval special section steel pipe (ASTM A500 Grade B, 76×38mm, 3.2mm wall) for a recreational equipment manufacturer in Ontario. The final product quality was acceptable—dimensions were within tolerance and the material certificates confirmed compliance with A500 Grade B yield strength requirements. However, initial communication during the quoting phase was slow, with a 72-hour response to our technical questions versus the 48-hour commitment stated on their page. Once production started, updates were regular and delivery arrived on day 31 within the promised window. We also had to follow up twice to receive the full dimensional inspection report. Issues were resolved and the material performed well in our client's application, so we may order again but expect tighter communication next time.
Ordered 11 tons of oval special section steel pipe (ASTM A500 Grade B, 76×38mm, 3.2mm wall) for a recreational equipment manufacturer in Ontario. The final product quality was acceptable—dimensions were within tolerance and the material certificates confirmed compliance with A500 Grade B yield strength requirements. However, initial communication during the quoting phase was slow, with a 72-hour response to our technical questions versus the 48-hour commitment stated on their page. Once production started, updates were regular and delivery arrived on day 31 within the promised window. We also had to follow up twice to receive the full dimensional inspection report. Issues were resolved and the material performed well in our client's application, so we may order again but expect tighter communication next time.
