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| Property | Parameter | Description |
|---|---|---|
| Product Name | Galvanized Steel Pipe for Construction | Hot-dip galvanized carbon steel pipe for structural use |
| Material Grade | Q235B / Q345B / ASTM A53 Grade B / BS 1387 | Common construction-grade carbon steel |
| Standard Compliance | ASTM A53, BS 1387, EN 10255, GB/T 3091 | Meets major international construction standards |
| Manufacturing Process | ERW (Electric Resistance Welded) + Hot-Dip Galvanizing | Welded pipe with zinc coating for corrosion protection |
| Carbon (C) | ≤0.25% | Carbon content for structural strength |
| Manganese (Mn) | ≤1.35% | Improves tensile strength and hardness |
| Phosphorus (P) | ≤0.035% | Controlled for ductility |
| Sulfur (S) | ≤0.035% | Low sulfur for improved weldability |
| Tensile Strength | ≥330 MPa | Minimum tensile strength per ASTM A53 Grade B |
| Yield Strength | ≥205 MPa | Minimum yield strength for structural applications |
| Elongation | ≥23% | Ductility in 50mm gauge length |
| Zinc Coating Thickness | 60 - 550 g/m² | Hot-dip galvanized per ASTM A123 / ISO 1461 |
| OD Range | 21.3mm - 219.1mm (1/2'' - 8'') | Standard nominal pipe sizes for construction |
| Wall Thickness | 1.5mm - 10mm (SCH20 - SCH80) | Various schedules available |
| Length | 5.8m, 6m, 12m or custom | Standard and custom cut lengths |
| Application | Scaffolding, structural framework, fencing, handrails | Typical construction industry applications |
| Certification | EN 10204 3.1, ISO 9001, CE, SGS | Quality certifications provided |
| Packaging | Bundled with steel strips, plastic caps on ends | Standard export packaging |
| MOQ | 5 tons | Minimum order quantity |
Acceptable Galvanized Pipe Quality — Coating Variance Resolved
Ordered 10 tons of 4-inch galvanized pipe (SCH 40, beveled ends) for an industrial water distribution retrofit in Alberta. Most of the shipment met spec, but our incoming inspection flagged three bundles where zinc coating weight measured at 287–295 g/m², slightly below the 300 g/m² ASTM A123 minimum. We raised this with the supplier and they responded within two business days, providing a re-inspection report and offering a partial replacement on the next order to compensate. The issue was handled professionally and the affected quantity was small relative to the total order. Mechanical properties and dimensional accuracy on all pieces were fine. We will trial another order to assess whether coating consistency has improved.
Ordered 10 tons of 4-inch galvanized pipe (SCH 40, beveled ends) for an industrial water distribution retrofit in Alberta. Most of the shipment met spec, but our incoming inspection flagged three bundles where zinc coating weight measured at 287–295 g/m², slightly below the 300 g/m² ASTM A123 minimum. We raised this with the supplier and they responded within two business days, providing a re-inspection report and offering a partial replacement on the next order to compensate. The issue was handled professionally and the affected quantity was small relative to the total order. Mechanical properties and dimensional accuracy on all pieces were fine. We will trial another order to assess whether coating consistency has improved.
