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| Property | Parameter | Description |
|---|---|---|
| Product Name | Galvanized Steel Pipe | Hot-dip or pre-galvanized carbon steel pipe |
| Base Material | Q235B / ASTM A53 / SS400 | Low-carbon steel substrate |
| Standard Compliance | ASTM A53, BS 1387, EN 10255, GB/T 3091 | Meets major international standards |
| Manufacturing Process | ERW / Seamless + Hot-Dip Galvanizing | Welded or seamless pipe with zinc coating |
| Zinc Coating Thickness | 60 - 550 g/m² | Per ASTM A123 / ISO 1461 |
| Carbon (C) | ≤0.25% | Carbon content for formability |
| Manganese (Mn) | ≤1.35% | Improves strength and toughness |
| Phosphorus (P) | ≤0.035% | Controlled for ductility |
| Sulfur (S) | ≤0.035% | Low sulfur for weldability |
| Tensile Strength | ≥330 MPa | Minimum tensile strength per ASTM A53 Grade A |
| Yield Strength | ≥205 MPa | Minimum yield strength |
| Elongation | ≥25% | Ductility in 50mm gauge length |
| OD Range | DN15 - DN200 (21.3mm - 219.1mm) | Available nominal diameter options |
| Wall Thickness | 1.0mm - 10.0mm | Light, medium, and heavy series |
| Length | 5.8m - 12m or custom | Standard and custom lengths available |
| Application | Water supply, fencing, scaffolding, structural | Typical application scenarios |
| Certification | EN 10204 3.1, ISO 9001, ASTM A53 | 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 Issue Identified and Resolved
We ordered 8 tons of galvanized ERW pipe, 1.5-inch OD, SCH 40, ASTM A53 Gr.B, for an industrial plumbing project in Ontario. On arrival, our inspector identified that approximately 6% of pieces in one bundle showed uneven zinc coating — visually thinner patches on one side, though still above the 300 g/m² minimum per spot testing. We documented and reported this to the supplier with photos. To their credit, the technical team responded within one business day, acknowledged the issue, and offered a partial credit applied to our next order, which we accepted. Mechanical properties on the MTC were fully compliant — yield at 252 MPa, tensile at 421 MPa. Delivery was 16 business days, within the quoted range. The resolution process was handled professionally, which gives us confidence to place a follow-up trial order. Coating consistency is the area we would want to see improved.
We ordered 8 tons of galvanized ERW pipe, 1.5-inch OD, SCH 40, ASTM A53 Gr.B, for an industrial plumbing project in Ontario. On arrival, our inspector identified that approximately 6% of pieces in one bundle showed uneven zinc coating — visually thinner patches on one side, though still above the 300 g/m² minimum per spot testing. We documented and reported this to the supplier with photos. To their credit, the technical team responded within one business day, acknowledged the issue, and offered a partial credit applied to our next order, which we accepted. Mechanical properties on the MTC were fully compliant — yield at 252 MPa, tensile at 421 MPa. Delivery was 16 business days, within the quoted range. The resolution process was handled professionally, which gives us confidence to place a follow-up trial order. Coating consistency is the area we would want to see improved.
