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3Selection items
6Steps
1FAQs
GBStandards cited
Summary: Reservoir and pond liners follow GB/T 50290-2014 (replacing withdrawn GB 50290-98 and SL/T 225-98): 0.75-1.5 mm HDPE membrane or two-cloth-one-film composite for settling basins, with UV protection at the fluctuating water zone and special sealing at outlet pipes.
Selection Table
| Position / function | Recommended material | Standard |
|---|---|---|
| Irrigation pond | 0.75-1.0 mm smooth HDPE | GB/T 17643-2025 |
| Small reservoir basin | 1.0-1.5 mm membrane or composite | GB/T 17643-2025 / GB/T 17642-2025 |
| Cushion | 200-300 g/m2 staple geotextile | GB/T 17638-2017 |
Installation Steps
- Clear, trim and compact basin, treat springs and cracks
- Lay cushion geotextile
- Lay membrane by zones with settlement and thermal slack
- Double-seam welding with sample testing, extrusion welding at nodes
- Protect fluctuating zone with ballast or slabs, seal pipe penetrations
- Stage-fill water and observe seepage before operation
