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HDPE Geomembrane Smooth
Zhonglong enforces strict material selection for HDPE geomembrane, achieving 97.5% pure HDPE content through uncompromising raw material standards. By utilizing advanced manufacturing processes and premium virgin resins, we guarantee zero recycled content in our products, meeting the quality demands of civil engineering and mega-projects.
To guarantee a 100% product acceptance rate, the company's quality control department conducts both continuous production line inspections and random checks on finished goods, ensuring doubly secure quality for the "Zhonglong" brand.
Technical Parameter
GB/T 17643-2025 & GRI GM13-2016
| NO. | Item | Unit | Index | ||||||
| Thickness | mm | 0.75 | 1 | 1.25 | 1.5 | 2 | 2.5 | 3 | |
| 1 | Density | g/cm³ | ≥0.940 | ||||||
| 2 | Tensile yield strength (longitudinal and transverse) | N/mm | ≥11 | ≥15 | ≥18 | ≥22 | ≥29 | ≥37 | ≥44 |
| 3 | Tensile fracture strength (longitudinal and transverse) | N/mm | ≥20 | ≥27 | ≥33 | ≥40 | ≥53 | ≥67 | ≥80 |
| 4 | Tensile yield strain (longitudinal and transverse) | % | 10~16 | ||||||
| 5 | Tensile fracture strain (longitudinal and transverse) | % | ≥700 | ||||||
| 6 | Right-angle tear load (longitudinal and transverse) | N | ≥93 | ≥125 | ≥160 | ≥190 | ≥250 | ≥315 | ≥375 |
| 7 | Puncture resistance strength | N | ≥240 | ≥320 | ≥400 | ≥480 | ≥640 | ≥800 | ≥960 |
| 8 | Tensile load stress cracking | h | ≥500 | ||||||
| 9 | Carbon black content | % | 2.0~2.8 | ||||||
| 10 | Carbon black dispersibility | / | Among 10 data, there should be no more than 1 level 3, and levels 4 and 5 are not allowed. | ||||||
| 11 | Oxidation induction time(OIT) | min | Induction time of atmospheric pressure oxidation ≥100/12b |
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| 12 | 85 ℃ thermal aging (retention rate of atmospheric pressure OIT after 90 days) | % | ≥55 | ||||||
| 13 | UV resistance (OIT retention rate after 1600 hours of UV irradiation) | % | ≥50 | ||||||









