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Specifications
Field Coating Joint for Girth Weld1.Tensile strength:15.0Mpa
2. Good anticorrosion
3. For Pre-insulated pipeline
Field Coating Joint For Pre-insulated pipeline girth weld
It is a kind of special-purpose pipe connection, which is made by embedding specific electric heating melt welding net in the basis of high quality PE sheet with special technicals.
Features & Benefits:
- Waterproof; good sealing capacity;
- Able to withstand axial forces initiated by axial moments of the pipe in the ground;
- Able to withstand radial forces and bending forces; high tensil strength;
- Able to withstand effects of temperature and temperature variatations.
- Have the same thickness of the pipeline insulation layer.
- Could be used as drawing pipe scope of application: DN200~DN3000mm
Testing program | Required technical | Testing result | Testing method |
Appearance | The appearance of HDPE electric fusion sleeve is smooth and flat, no bubble, no split, no discolor because of decomposition; and the embessed fusion net is no disconnect and tilting. | pass | Tested by eye under the sunlight. |
Tensile strength | ≥13Mpa | 15.0Mpa | GB/T 8804.3-2003 |
Hydraulic pressure test | 20°C,0.1Mpa water pressure, no damage and leakage after 1 hour | pass | GB/T 6111-2003 |
Air leakage test | 20°C,0.1Mpa air pressure,no damage and leakage after 1 hour | Pass | GB/T 6111-2003 |
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