Standard specifications
Key parameters and quick judgement tables
| Indicator group | Check the content | Risk of purchasing |
|---|---|---|
| Resin and density | Formulas and classifications | Recycled or unrecycled |
| Mechanical performance | Stretching, tearing, piercing | The thickness or direction of the material is not appropriate |
| Stability of the system | Carbon black content/dispersed OIT | Inadequate weather and oxidation life |
| Long-term performance | Stress fractures and so on | Only short-term intensity reports |
Standard specifications
Project judgments and procurement conclusions
GRI-GM13 is a set of test methods, performance and frequency specifications for smooth and textured HDPE geomembranes. The current documentation for this document is Revision 18 (April 5, 2024); purchasers should still confirm whether the intended version of the project and GSI are updated and check the actual thickness of the project, and the surface type, rather than accepting a standard report on the non-standard volume, thickness or test date. GM13 technology is part of the manufacturing quality control specification and may not be sufficient to constitute a complete specification for the specific project; extreme additions may also require more stringent requirements for project add-ons or GM-GRI-42 standards.
Standard specifications
Steps to landing
- Specified version
The GM13 version is used in the PO and technical annexes.
- Table of thickness
No 2.0 mm reporting is required to replace 1.5 mm supply batches.
- Check frequency
Confirm the frequency of the project as specified or contract-intensive frequency testing.
- Keeping the batch chain
Volume number, resin batch number, date of production and report traceable.
Standard specifications
Acceptance points and common risks
- Logo declaration of complianceThe GM13 quality rating is not the same as the complete pass-by-pass rating.
- The quality of the cheese is unclearThe effective thickness and high-point thickness must be understood separately.
- Version unlockedThe use of different versions at the bidding and acceptance stages is controversial.
Technical basis