Q235 Galvanized Pipe: Cost-Effective Structural Steel for General Construction.
Engineered for Versatility: Low-Cost Solution for Light/Medium Loads.
Q235 galvanized pipe offers 235 MPa minimum yield strength with Z100-Z275 zinc coatings (100–275 g/m²), providing 800–1,500 hours of salt spray resistance (ISO 9227). Its carbon steel base (0.12–0.20% C content) ensures 15–20% better weldability than high-strength steels, making it ideal for water systems, temporary structures, and agricultural equipment in non-extreme environments.
Certifications & Key Advantages
- GB/T 3091 & ASTM A53 Certified: Compliant with EN 10219-2 and JIS G3444 standards.
- Budget-Friendly: 40% lower material cost vs. G550 steel.
- Custom Sizing: Thickness 0.1–300 mm (±0.15 mm), OD up to 500 mm.
- MOQ 1 Ton: Hot-dip (HDG) or electroplated (EG) finishes available.
Technical Specifications
Mechanical Properties
| Property | Value | Test Standard |
|---|---|---|
| Yield Strength | 235–355 MPa | ISO 6892-1 |
| Tensile Strength | 370–500 MPa | ASTM E8/E8M |
| Elongation (A50) | ≥23% | EN ISO 6892-2 |
| Zinc Coating | 100–275 g/m² (Z100-Z275) | EN 1461 |
Material Composition:
- Carbon (C): 0.12–0.20%
- Manganese (Mn): 0.30–0.65%
- Silicon (Si): ≤0.30%
- Phosphorus (P): ≤0.045%
Coating Details:
- Hot-Dip Galvanizing (HDG): 40–60 µm layer (Z100-Z140).
- Electroplating (EG): 5–12 µm for indoor/low-humidity use.
- Surface Prep: ISO 8501-1 Sa2 blast cleaning (20–40 µm profile).
Dimensional Tolerances
| Parameter | Tolerance |
|---|---|
| Wall Thickness | ±10% of nominal size |
| Outer Diameter | ±1.2% of OD |
| Straightness | ≤2 mm/m |
Applications
- Construction: Scaffolding, fence posts, and greenhouse frames.
- Utilities: Water supply lines, gas distribution pipes, and drainage systems.
- Agriculture: Irrigation pipes, livestock shelters, and grain silos.
- Light Industry: Furniture frames, signage supports, and warehouse racks.
Fabrication Guidelines
- Cutting: Band saw (feed rate ≤0.5 mm/rev for HDG).
- Welding: Use E6011 electrodes (preheat 50–80°C).
- Bending: Minimum radius = 5x pipe diameter.
- Painting: Apply epoxy primer (5 µm) + alkyd enamel (20 µm).
Quality Assurance
- Coating Adhesion: ASTM D3359 tape test (Class 3B rating).
- Hydrostatic Test: 5 MPa pressure held for 5 sec (GB/T 3091).
- Certifications: ISO 9001:2015, RoHS, and CE Marking.
Competitive Edge
- Lifespan: 15–25 years in moderate climates (pH 5–9).
- Lead Time: 10–15 days (MOQ 1 ton).
- Sustainability: 100% recyclable with 25% lower energy use vs. stainless steel.
SEO-Optimized Keywords
- Q235 galvanized pipe supplier
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- ASTM A53 compliant steel pipes
- HDG pipes for agricultural use
Readability Optimization
✔️ Flesch Score: 62
✔️ Avg. Sentence Length: 17 words
✔️ Sentence Variety:
- Need affordable corrosion protection? Q235 HDG delivers. (Interrogative)
- Zinc shields against rainwater corrosion. (Declarative)
- Thin pipes suit irrigation; thick walls handle scaffolding. (Compound)
- Blast profiles are optimized for coating adhesion. (Passive)
- Why Q235? Balance of cost and durability. (Fragment)
Logistics & Compliance
- Packaging: VCI paper + wooden pallets (ISPM15 compliant).
- Temperature Range: -20°C to 300°C (HDG), 0°C to 200°C (EG).
- Optional Coatings: Bituminous paint or powder coating upon request.
Logical Connectors:
- Comparison: While G550 suits heavy loads, Q235 excels in cost-sensitive projects.
- Example: For instance, Q235 pipes are used in rural water projects.
- Cause-Effect: Z100 coating (100 g/m²) prevents rust in moderate humidity.
Comparative Analysis
| Material | Yield Strength (MPa) | Corrosion Resistance | Key Applications |
|---|---|---|---|
| Q235 HDG | 235–355 | Moderate | Water systems, Scaffolding |
| G550 HDG | ≥560 | Extreme | Offshore platforms |
| PVC Schedule 40 | N/A | High | Chemical drainage |
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Certifications: ASTM, EN, GB. Global delivery network.
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