Steel Belt Reinforced HDPE Spiral Corrugated Pipe
Steel Belt Reinforced HDPE Spiral Corrugated Pipe (hereinafter referred to as "steel-reinforced pipe") is a new type of composite structured-wall pipe manufactured using a spiral winding process, featuring a high-density polyethylene (HDPE) matrix and a galvanized steel strip reinforcement layer. Combining the corrosion resistance and flexibility of HDPE with the high strength and impact resistance of steel, these pipes are widely used in municipal drainage, industrial sewage disposal, agricultural irrigation, highway culverts, and underground utility tunnels. Suitable for various operating conditions—including gravity flow and low-pressure conveyance—they serve as an ideal alternative to traditional metal and concrete pipes.
Product Specifications & Parameters
Key Specifications
| Nominal inner diameter(mm) DN/ID | Minimum average inner diameter(mm) | Minimum inner wall thickness(mm) | Minimum laminated wall thickness(mm) | Maximum pitch (mm) | Minimum steel strip thickness(mm) | Minimum anti-corrosion coating thickness(mm) |
| 300 | 294 | 2.5 | 4 | 75 | 0.4 | 2.2 |
| 400 | 392 | 3 | 4.5 | 85 | 0.4 | 2.2 |
| 500 | 490 | 3.5 | 5 | 100 | 0.5 | 2.5 |
| 600 | 588 | 4 | 6 | 110 | 0.5 | 2.5 |
| 700 | 685 | 4 | 6 | 115 | 0.5 | 2.5 |
| 800 | 785 | 4.5 | 7.5 | 120 | 0.7 | 3 |
| 900 | 885 | 5 | 7.5 | 135 | 0.7 | 3 |
| 1000 | 985 | 5 | 8 | 150 | 0.7 | 3 |
| 1100 | 1085 | 5 | 8 | 165 | 0.7 | 3 |
| 1200 | 1185 | 5 | 8 | 180 | 0.7 | 3 |
Note: Products with special specifications, ring stiffness, and lengths can be customized according to customer requirements; parameters for export products can be adjusted to meet the standards of the respective regions.
Applicable Standards
Environmental Parameters
Operating temperature: -20°C to 60°C (low-temperature resistant formulations can be customized for special low-temperature conditions, down to -40°C).
Operating pressure: Gravity flow (non-pressurized).
Burial depth: ≤10m (adjustable based on ring stiffness class; special depths require specific engineering design).
Applicable media: Municipal sewage, industrial wastewater, rainwater, potable water, agricultural irrigation water, mildly corrosive chemical liquids, etc.
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