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PE Electrofusion Sleeve and Electro Melt Band Making Machine Line
PE Electro Fusion Welding Sleeve:
It is a kind of connecting pipe fitting what is widely used on anti-corrosion, especially on Directly buried pre-insulated pipes field joint. It is made by Polyethylene sheets complex with the electro-fusion wire
INTRODUCTION
Electrofusion weldable joint is a pre-cut high-quality HDPE sheet embedded with nicochrome net. It is used as polymer pipe welding materials or fittings, which is installed by a special electric heating welder.
The tape size can be customized. It can be used for a big range of pipe diameter from 200mm.
Application:
1. District thermal heating system construction
2. Pre-insulated pipes field joint welding and oil pipes joint welding;
3. Hollow wall spiral pipe joint fitting
4.Structure pipe joint fitting
5. Steel reinforced spiral pipe joint fitting
Performance:
1. Waterproof; High adhesion, good airtightness, corrosion resistant capacity, long service life and convenient operation
2. Able to withstand axial forces initiated by axial movements of the pipe in the ground;
3. Able to withstand radial forces and bending moments;
4. Able to withstand effects of temperature and temperature variations.
5. Have the same thickness of the line pipe insulation layer.
Size and deviation of the electrofusion mesh
Mesh material | Electrofusion mesh | Electrofusion sleeve | |||
Thickness | Deviation | Width | Deviation | Length | Deviation |
0.30 | ±0.015 | 50 | 0 〜+0.2 | 1770 | 0—+10 |
Resistivity of electrofusion mesh should comply with the following standard
Resistivity of electrofusion mesh
(mm/m) Width of electrofusion mesh | (mmxmm) Mesh hole | mm Mesh wire | (Q/m) Resistivity |
50 | 3x6 | 0.3 | 0.8 |
Test report
Final Test | Unit | Standard | Test Result | Assess |
HDPE Raw material density | g/cm 3 | ≥0.935 | 0.961 | OK |
Raw material melt flow rate | g/10min | ≤0.50 | 0.46 | OK |
Appearance check | / | Internal and external surfaces are clean and free from other defects. | OK | OK |
Heat reversion | % | ≤3; shall not show any cracks | 0.89, No cracks | OK |
Tensile yield strength | Mpa | ≥19 | 20.2 | OK |
Elongation at break | % | ≥350 | 656 | OK |
Stress crack resistance | h | ≥300 | OK | OK |