Selection guides
Key parameters and quick judgement tables
| The scene | Asking about the pre-election districts | Supporting focus |
|---|---|---|
| Small low-risk fish ponds/landscape ponds | The first is the 0.75 mm. | Precision cleaning base, protective layer; 0.5 mm not within GM13 range |
| Reservoir/biogas pond | The first is the 1.5 mm. | The pipeline nodes, the gas pipeline |
| Water control pool | The first is the 1.5 mm. | Medium compatibility, resistance to float |
| Filling sites/tail mines | 1.5 mm and above | The first is the combination of the CQA and the CQA. |
This is a preferred scope for procurement, not a design threshold that is common to all regions; regulations, approval drawings and contract standards are given priority.
Selection guides
Project judgments and procurement conclusions
The thickness is not determined by the project name, but by the risk of penetrating, liquid water heads, chemical media, exposure time and design life. Small, low-risk small fish ponds can be compared from 0.5 mm to 0.75 mm when finely level and set up the protection layer; reservoirs and ordinary sewage pools are often compared from 1.0 mm; main life-saving tubing layers are usually 1.5 mm and above, and must ultimately comply with the approved design. When HDPE geomembrane is required to be purchased or accepted under GRI-GM13, its applicable thickness ranges from 0.75 mm to 0.5 mm products cannot be declared to be GM13 compliant.
Selection guides
Acceptance points and common risks
- Only the official thicknessThe minimum thickness of the unit should be agreed with the sampling method.
- The first is the use of a thick base.The sharp stone and uneven precipitation can still pierce the thick membrane.
- Ignore the window sealsThe site of the welding error for ultra-thin materials is smaller and construction capacity needs to be evaluated simultaneously.
Selection guides
Steps to landing
- Clear media
Submitting pH, temperature, pollutants and long-term exposure.
- Check the baseline
Explain the soil, rock, sediment and protection layers.
- Calculating water head
The maximum liquidity, slope and run cycle.
- Formation of the specification
Write down the thickness gap, raw materials, surface, test standards and batch documents.
