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| Material: | Polyethylene |
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1.Shrink Sleeve Technical Parameter
| NO. | Item | Unit | Typical | Test Method | |
| A | Base Material of the Heat-Shrinkable Sleeve | ||||
| 1 | Tensile Strength | MPa | 22.7 | GB/T 1040 | |
| 2 | Elongation at Break 23 oc | % | 630 | GB/T 1040 | |
| 3 | Weika Softening Point | oc | 91 | GB/T 1040 | |
| 4 | Brittle Temperature | oC | <-65 | GB/T 1633 | |
| 5 | Dielectric Strength | MV/m | 30.4 | GB/T 1408 | |
| 6 | Volume Resistivity 2oc | Ω@m | 6.2×1013 | GB/T 1410 | |
| 7 | Stess Failure F50 | h | No crack after 1000 hours | GB/T 1842 | |
| 8 | Corrosion Protection Against Chemist Medium (Marinate 7 days)10%HCl 10%NaOH 10%NaCl |
% | 98 94 98 |
GB/T 1040 | |
| 9 | Thermal Ageing Protection(150oc,168h) Tensile Strength Elongation |
MPa % |
21.3 620 |
GB/T 1040 | |
| B | Heat-Melt Adhesive | ||||
| 10 | Softening Stength | oc | 105 | GB/T 4507 | |
| 11 | Shearing Strength | MPa | 2.9 | SY/T 0041 | |
| 12 | Brittle Strength | oc | <-15 | ASTM D2671C | |
| 13 | Peel Strength (PE/Steel) | 25oc | N/cm | 120 62 |
GB/T 2792 |
| 50oc | |||||
| 14 | Peel Strength (PE/FBE) | 25oc | N/cm | 100 48 |
GB/T 2792 |
| 50oc | |||||
| 15 | Peel Strength (PE/PE) | 25oc | N/cm | 83 35 |
GB/T 2792 |
Heat shrinkable sleeves are the most widely used technology in the world today for field girth-weld corrosion protection because they are easy to install, provide excellent protection and are cost-effective. With formula made of various raw materials and radiation, cross linking and other process techniques, heat shrinkable wrap sleeve with various size for various purpose are manufactured. They are widely used in joint corrosion prevention, leakage prevention, protection of petroleum, natrual gas and heat insulation pipelines, etc. They are predominant in high mechnical strength, strong anti-aging capability, good sealing property, corrosion resistance, convenient construction, etc.
1. For girth welding of pipeline
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