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| Property | Parameter | Description |
|---|---|---|
| Product Name | Steel Pipes for Scaffolding Construction | Structural steel tubes used as load-bearing members in temporary scaffolding systems |
| Material Grade | Q235B / S235JR / ASTM A53 Gr.B | Q235B (GB), S235JR (EN 10219), ASTM A53 Grade B (ASTM); equivalent mild carbon steel grades |
| Standard Compliance | GB/T 13793, EN 39, ASTM A53, BS 1139 | Complies with Chinese GB/T 13793, European EN 39, American ASTM A53, and British BS 1139 scaffolding tube standards |
| Chemical Composition – C | ≤ 0.20% | Carbon content controlled to ensure weldability and ductility |
| Chemical Composition – Mn | 0.30% – 0.65% | Manganese improves tensile strength and toughness |
| Chemical Composition – P | ≤ 0.045% | Phosphorus limited to prevent cold brittleness |
| Chemical Composition – S | ≤ 0.045% | Sulfur limited to prevent hot shortness and improve toughness |
| Chemical Composition – Si | ≤ 0.35% | Silicon as deoxidizer; minor strengthening effect |
| Tensile Strength | ≥ 370 MPa (EN 39); ≥ 415 MPa (ASTM A53 Gr.B) | Minimum tensile strength per respective standard; ensures structural integrity under load |
| Yield Strength | ≥ 235 MPa (Q235B / S235JR); ≥ 240 MPa (ASTM A53 Gr.B) | Minimum yield strength guaranteeing elastic performance under working loads |
| Elongation | ≥ 24% (Q235B); ≥ 22% (ASTM A53 Gr.B) | Minimum elongation at fracture indicating good ductility and energy absorption |
| Dimensions (OD × Wall Thickness) | OD: 48.3 mm; Wall Thickness: 3.2 mm (standard EN 39 / BS 1139) | Standard scaffolding tube OD 48.3 mm × WT 3.2 mm; custom sizes OD 33.7–114.3 mm, WT 2.0–6.0 mm available |
| Length | 1.0 m – 6.5 m (standard); custom lengths available | Common lengths: 1.0 m, 1.5 m, 2.0 m, 3.0 m, 4.0 m, 6.0 m, 6.4 m per project requirement |
| Surface Finish | Hot-dip Galvanized / Pre-galvanized / Plain / Painted | Hot-dip galvanized coating ≥ 45 µm per EN ISO 1461 for corrosion protection; plain or painted options available |
| Application | Building construction, bridge works, industrial maintenance, event staging | Widely used as vertical standards, horizontal ledgers, and diagonal braces in modular and tube-and-coupler scaffolding |
| Certification | ISO 9001, CE Marking, SGS, BV, TÜV | Third-party inspection and quality management system certifications available upon request |
| Packaging | Bundled in steel straps; 20–30 pcs per bundle | Bundles secured with steel strapping; end caps applied; loaded in 20 ft or 40 ft containers |
| MOQ | 5 Metric Tons | Minimum order quantity 5 MT per size; mixed sizes accepted for full container load orders |
Initial Shipment Had Labeling Inconsistency — Issue Fully Resolved
Our first order of 1,800 scaffolding tubes, 48.3mm OD x 3.2mm WT, ASTM A53 certified, arrived with bundle labeling that did not match the packing list heat numbers. This created a hold-up during our client's incoming material inspection. I raised the issue with the supplier and they responded within four hours, issued corrected documentation the same day, and arranged for a third-party inspector to physically verify the heat traceability on-site. The underlying material quality was not in question — mechanical properties were confirmed correct. The supplier also implemented a revised labeling checklist for our subsequent order, which arrived without any issues. Willing to continue ordering given the responsive resolution.
Our first order of 1,800 scaffolding tubes, 48.3mm OD x 3.2mm WT, ASTM A53 certified, arrived with bundle labeling that did not match the packing list heat numbers. This created a hold-up during our client's incoming material inspection. I raised the issue with the supplier and they responded within four hours, issued corrected documentation the same day, and arranged for a third-party inspector to physically verify the heat traceability on-site. The underlying material quality was not in question — mechanical properties were confirmed correct. The supplier also implemented a revised labeling checklist for our subsequent order, which arrived without any issues. Willing to continue ordering given the responsive resolution.
