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Heat Shrinkable Sleeve for Girth Weld Heat shrinkable sleeves for girth weld 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...
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Heat Shrinkable Sleeve for Girth Weld
Heat shrinkable sleeves for girth weld 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.
Technical parament
| NO | Text Item | Unit | Performance | Text Result | Text Method | ||
| Back Material | |||||||
| 1 | Tensile Strength | MPa | ≥17 | 19.47 | ASTM D638 | ||
| 2 | Elongation | % | ≥400 | 626 | ASTM D638 | ||
| 3 | Vicat Softening Point | ºC | ≥90 | 92 | ASTM D1525 | ||
| 4 | Brittleness Temperature | ºC | <-65 | <-65 | ASTM D2671C | ||
| 5 | Dielectric Strength | MV/m | ≥25 | 33.13 | ASTM D149 | ||
| 6 | Volume Resistivity | Ω.m | ≥1*1013 | 1.1*1013 | ASTM D257 | ||
| 7 | Environment Stress Crack | h | ≥1000 | >1000 | GB/T1842 | ||
| 8 | Chemical resistance (7d) | 10% HCI | Tensile strength | MPa | ≥85 | 104.9 | ASTM D638 |
| Elongation | % | ≥85 | 96.3 | ASTM D638 | |||
| 10% NaAH | Tensile strength | MPa | ≥85 | 102.1 | ASTM D638 | ||
| Elongation | % | ≥85 | 95.6 | ASTM D638 | |||
| 10% NaCL | Tensile strength | MPa | ≥85 | 108.3 | ASTM D638 | ||
| Elongation | % | ≥85 | 94.1 | ASTM D638 | |||
| 9 | Thermal aging (150ºC,168h) | Tensile strength | MPa | ≥14 | 20.7 | ASTM D638 | |
| Elongation | % | ≥300 | 630 | ASTM D638 | |||
| NO. | Text Item | Unit | Performance | Text Result | Text Method | |
| Adhesive | ||||||
| 1 | Softening Point | ºC | ≥90 | 90.1 | ASTM E28 | |
| 2 | Brittleness Temperature | ºC | <-15 | <-15 | ASTM D2671C | |
| 3 | Lap Shear | MPa | ≥1.0 | 1.5 | ASTM D1002 | |
| 4 | Peel Strength (23±2ºC) | Steel | N/cm | ≥70 | 145.6 | ASTM D1000 |
| Primer | N/cm | ≥70 | 205.9 | ASTM D1000 | ||
| PE layer | N/cm | ≥70 | 190.0 | ASTM D1000 | ||
| Non-solvent Epoxy Primer | ||||||
| 5 | Shear of cured primer | MPa | ≥5.0 | 12 | SY/T0041 | |
Specifications of heat shrinkable sleeve for girth weld
| External giameter, mm | Ф159-Ф1420 |
| Width, mm | 500, etc... |
| Thickness, mm | 2.0, ect... |
| Closure Patch, mm | 100mm, 150mm, 200mm, etc... |
Application:
1. For girth welding of pipeline
2. Offshore and Underground coatings
3. Field coating Joint
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