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HDPE spiral pipe type A
HDPE spiral wound pipe type A is a structural wall pipe made from high-density polyethylene using a hot-state winding molding process. It uses a "工"-shaped structure and has excellent ring stiffness, strength, and toughness. It is lightweight and impact-resistant. With a smooth inner wall, it offers high flow rate, corrosion resistance, and is environmentally friendly and energy-efficient. It is widely used in municipal drainage, building exterior drainage, and agricultural irrigation and drainage.
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HDPE spiral pipe type A
| Serial Number | Name | Unit | Bidder's Required Value | Bidder's Guaranteed Value |
| 1 | Density g/cm³ | g/cm³ | 0.90~0.94 | 0.90~0.94 |
| 2 | Tensile Strength (23±2℃) |
kPa | Pipe: ≥25MPa Joint: ≥22.5MPa |
Pipe: ≥25MPa Joint: ≥22.5MPa |
| 3 | Elongation at Break | ≥400% | >400% | |
| 4 | Flexural Strength (23±2℃) |
≥36Mpa | >36Mpa | |
| 5 | Flattening Test (50% of inner diameter) |
℃ | No breakage | No breakage |
| 6 | Vicat Softening Temperature (GB/T 1633A50 method) |
% | ≥150℃ | ≥150℃ |
| 7 | Drop Weight Impact | No cracks or breaks appeared on any samples. | No cracks or breaks appeared on any samples. | |
| 8 | Ring Stiffness (3%, room temperature) |
≥32kPa | >32kPa | |
| 9 | Minimum Allowable Bending Radius | <75D | ≤75D | |
| 10 | Non-roundness mm: | <2 | ≤2 | |
| 11 | Coefficient of Sliding Friction | ≤0.35 | ≤0.35 |
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