Reliable Polyethylene Sleeve for Directly Buried Insulated Pipes with Corrosion Resistance and EN253 Certification
This polyethylene sleeve is a specialized connecting pipe fitting designed for anti-corrosion applications, particularly for field joints on directly buried pre-insulated pipes. Manufactured from polyethylene sheets integrated with electro-fusion wire, it provides superior protection and durability.
This heat shrink anti-corrosion material is engineered for joint repair and protection of buried steel pipelines, as well as for sealing and anti-corrosion of pipeline flange connections. Composed of radiation cross-linked polyolefin substrate and specialized sealing hot melt adhesive, it forms a robust anti-corrosion barrier when heated and installed.
| Test | Unit | Standard | Test Result | Assess |
|---|---|---|---|---|
| HDPE Raw material density | g/cm³ | ≥0.935 | 0.961 | OK |
| Raw material melt flow rate | g/10min | ≤0.50 | 0.46 | OK |
| Appearance check | / | Internal and external surfaces clean and free from defects | OK | OK |
| Heat reversion | % | ≤3; no 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 |
- Waterproof with high adhesion and excellent airtightness
- Superior corrosion resistance with long service life
- Capable of withstanding axial forces from pipe movements
- Resistant to radial forces and bending moments
- Withstands effects of temperature and temperature variations
- Matches the thickness of line pipe insulation layer
- Customer Reputation: Ensures higher quality projects with guaranteed cooperation quality
- Application Scope: Petrochemical anti-corrosion, thermal pipeline networks, steel pipe anti-corrosion, oil and gas pipeline interfaces, urban gas pipelines, heating systems, and water pipes
- Product Classification: Available in open and closed types with supporting products including EVA adhesive strips, fixing sheets, repair sheets, and solvent-free epoxy primer
| Steel Pipe OD (mm) | PE Casing OD (mm) | Width (mm) | Thickness (mm) |
|---|---|---|---|
| DN159 | 285 | 600 | 4 |
| DN219 | 315 | 600 | 4 |
| DN273 | 365 | 600 | 4 |
| DN325 | 420 | 600 | 5 |
| DN377 | 500 | 600 | 5 |
| DN426 | 550 | 600 | 6 |
| DN478 | 630 | 600 | 6 |
| DN529 | 655 | 600 | 6 |
| DN630 | 760 | 600 | 8 |
| DN720 | 850 | 600 | 8 |
| DN820 | 960 | 600 | 10 |
| DN920 | 1054 | 600 | 10 |
| DN1020 | 1155 | 600 | 12 |
| DN1220 | 1380 | 600 | 12 |
- District thermal heating system construction
- Pre-insulated pipes field joint welding and oil pipes joint welding
- Preinsulated bonded pipe systems for directly buried hot water networks
- Three PE/PP layers with foam jacket insulation pipes connection
- Steel pipes anti-corrosion applications
Qingdao Huashida Machinery Co., LTD is a manufacturer with 21 years of production experience specializing in plastic pipe machines, municipal pipe machines, pipe insulation & anti-corrosion machines, and pipe jointing & anti-corrosion materials.
Main Products:
- HDPE jacket pipe for pre-insulated pipe Production Line
- Rigid pre-insulated pipe Production Line
- Flexible pre-insulated pipe (PERT) production line
- Steel pipe FBE/2LPE/3LPE anti-corrosion coating line
- Steel pipe derusting line
- PE pressure pipe/Water Gas supply pipe production line
- PP/PE plastic board/sheet/geomembrane production line
- NBR PVC Thermal insulation tube/plate production line
- Pipeline anti-corrosion materials and instruments
We serve over 400 overseas customers worldwide, exporting 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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