Product Description:
HDPE heat shrinkage sleeves feature a two-layer structure consisting of a radiation cross-linked high desity polyethylene backing and a specialized hot-melt adhesive. For application on steel pipelines, the shrink sleeve is used in combination with a solvent-free, two-components epoxy primer. The hot-melt adhesive provides excellent adhesion to the HDPE backing, the steel pipe surface, and the epoxy primer. Upon heating, the HDPE backing shrinks while the adhesive layer melts, allowing sleeves to tightly conform to the pipe joint. Together with the epoxy primer, this system forms a strong, continuous anti-corrosion barrier comparable to factory application for three layers polyethylene (3LPE) coatings. This coating system offers excellent resistance to corrosion, abrasion, impact, ultraviolet (UV) radiation, and aging. In addition, it is easy to apply in field conditions.
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Application:
It is mainly used for pipe connection, field joint coating, wrapping around pipes, anti-corrosion of kinds of pipe joints, and repairing pipes. For example Oil and gas pipe, PU insulation pipe, 3LPE/2LPE steel pipe, corrugated pipe.
Feature of heat shrinkage sleeve manufactured by HUASHIDA:
| NO | Test Item | Unit | Performance | Test Result | Test Method | ||
| 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 | Test Item | Uni | Performance | Test Resul | Test 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 | ||
| HDPE layer | N/cm | ≥70 | 190.0 | ASTM D1000 | ||
| Non-solvent Epoxy Primer | ||||||
| 5 | Shear of cured primer | MPa | ≥5.0 | 12 | SY/T0041 | |
Qingdao Huashida Machinery Co., LTD is a manufacturer of series of plastic pipe machines, municipal pipe machines, pipe insulation & anticorrosion machines, and pipe jointing & anticorrosion materials, with more than 20 years of production experience.
We are always attaching great importance to research and development, collaborating closely with Tsinghua University, Beijing University of Chemical Technology, South China University of Technology and scientific research institutions. By absorbing advanced technology home and abroad, we now rank one of the top 3 manufacturers in the industry in China.
We have been working with more than 400 overseas customers and exporting our products to Kazakhstan, Uzbekistan, Middle East, Russia, Nigeria and other countries.
Thank you for your interest in Qingdao Huashida Machinery Co., Ltd. equipment.
For further details, please feel free to contact us at any time. Our team will respond promptly and provide a fully customized solution tailored to your specific requirements and project needs.
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