CNPetro Hitech Co.,LTD
CNPETRO HITECH CO.,LTD FOCUS ON SEALING & WATERPROOF & CORROSION PROTECTION
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HDD Heat-Shrinkable Sleeve That Meet All Relevant Global Standards
A three-layer system consisting of 100% solids two-component liquid epoxy primer and a heat shrink sleeve made from a high shear strength co-polymer adhesive and irradiation cross-linked, high-density polyethylene backing. This coating system replicates the structure and the performance of factory-applied three-layer PE coatings.
Fibre reinforced heat-shrinkable sleeve for field joint protection during directional drilling
A high-performance fibreglass reinforced sleeve specifically designed for girth weld corrosion protection for PE, PP and FBE coated pipes used for horizontal or directional drilling (HDD-Pull Through) applications. The reinforcement gives the backing greater abrasion and gouge resistance.
During installation, the epoxy is applied to the prepared pipe surfaceand the heat-shrinkable sleeve is immediately wrapped around thejoint over the wet epoxy. Heat is then applied to the sleeve, whichshrinks to form a tight fit around the joint. While curing, the epoxyforms strong mechanical and chemical bonds to the pipe surface & tothe copolymer adhesive layer. The radiation cross-linked outer layerforms a tough barrier against mechanical damage and moisturetransmission.
| Test standard | Unit | 3PP 110 | ||
| Adhesive | Softening point | ASTM E28 | ℃(℉) | 110 |
| Lap shear @23℃ | EN12068 | N/cm2 | 550 | |
| Lap shear @23℃ | EN12068 | N/cm2 | 25 | |
| Backing | Specific gravity | ASTM D792 | g/cm3 | 95 |
| Tensile strength | ASTM D638 | MPa (psl) | 24 | |
| Elongation | ASTM D638 | % | 550 | |
| Hardness | ASTM D2240 | Shore D | 55 | |
| Abrasion resistance | ASTM D 1044 | Mg | 35 | |
| Volume resistance | ASTM D257 | Ohm-cm | 1017 | |
| Dielectricvoltage breakdown | ASTM D149 | Kv/mm | 27 | |
| Sleeves | Impact | EN12068 | J | >8 |
| Indentation | EN12068 | mm | 0.1 | |
| Peel adhesion | ASTM D1000 | N/cm | 120 | |
| Peel adhesion | EN12068 | N/cm | >140 | |
| Cathodic disbondment | ASTM G8 | Mm rad | 3 | |
| Water absorption | ASTM D 570 | % | 0.05 | |
| Low Temp.flexbility | ASTM D2671-C | ℃(℉) | >-32(-26) | |
| Fully recovered T thickness | Mm(mil) | 1.9(77) | ||
| Fully recovered L thickness | Mm(mil) | 2.4(96) |