HDPE Corrugated Pipeline radiation cross-linked Heat Shrinkable Sleeve
Three-layer heat shrinkable sleeve is designed for welded joint protection with epoxy primer of plastic coated steel pipelines. It has a thick cross linked polyethylene backing coated with heat sensitive adhesive and two part of liquid epoxy primer. Apply epoxy primer to the pipe surface an then adhesive flows and forms a reliable corrosion protection seal onto epoxy and adjacent coating surfaces. After heating, formed corrosion protection seal and strong backing provides outstanding waterproofing effect and high chemical resistance.
During installation, the epoxy is applied to the prepared pipe surface and the heat shrinkable sleeve is immediately wrap around the joint over the wet epoxy. Heat is then applied to the sleeve which shrinks to form a tight fit around the joint. While curing, the epoxy forms strong mechanical and chemical bonds to the pipe surface & to the copolymer adhesive layer. The radiation cross linked outer layer forms a tough barrier against mechanical damage and moisture transmission.
Feature
Fast shrinkage speed, good waterproof performance, good anti-corrosive performance, long service life, convenient transportation and fast construction. The product are ideal material for corrosion prevention and insulation.
Application scope
The system is designed to be applied with 3 PE steel pipes and is ideal for oil and gas transmission pipeline.HDPE pipeline joint.
| |
ITEM |
Standard |
UNIT |
Data |
| Adhesive |
softening point |
ASTM E 28 |
°C |
70-80 |
| shear strength |
DIN 30 672 |
N/cm |
≥100 |
| Basic |
specific density |
ASTM D792 |
r/cm 3 |
0.935-0.96 |
| tensile strength |
ASTM D638 |
Mpa |
15-20 |
| Elongation at break |
ASTM D792 |
% |
350 |
| hardness |
ASTM D2240 |
ball |
48 |
| Heat Shrinkable Sleeve |
peel strength |
ASTM D1000 |
N/cm |
>150 |
| water-intake rate |
ASTM D570 |
% |
0.05 |
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