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SBRSM-GS—Heat shrink sleeves for corrosion protection of steel-plastic composites and steel-plastic joints
SBRSM-GS—Heat shrink sleeves for corrosion protection of steel-plastic composites and steel-plastic joints
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Application areas:
Widely used for corrosion protection, moisture protection, and wear resistance of various metal pipes and steel-plastic joints. It has excellent sealing and corrosion protection performance.
Product Description
Product Introduction:
Steel-plastic composite (SPC) and SPC joint corrosion-resistant heat shrink sleeves are produced using a double-layer co-extrusion process of semi-rigid polyolefin and hot melt adhesive . The outer layer is polyolefin , offering excellent wear resistance; the inner layer is hot melt adhesive, providing excellent adhesion to various coatings and metals. They are widely used for corrosion protection, moisture resistance, and wear resistance in various metal pipes and SPC joints, exhibiting excellent sealing and corrosion protection performance.
Features:
The product conforms to GB/T 23257
Initial shrinkage temperature: 80℃
Minimum temperature for complete shrinkage: 125℃
Operating temperature: -45℃ to 125℃
Environmental Standards: RoHS
Standard color: Black (other colors can be customized)
Product Parameters
|
Outer layer technical specifications |
||
|
performance |
index |
Test methods |
|
Tensile strength |
≥14 MPa |
ASTM D 2671 |
|
Elongation at break |
≥400% |
ASTM D 2671 |
|
Strength after heat aging |
≥12 MPa |
UL224 , 158 ℃ × 168h |
|
Elongation at break after heat aging |
≥300% |
UL224 , 158 ℃ × 168h |
|
Axial change rate |
-8% to +8% |
ASTM D 2671 |
|
Breakdown strength |
≥20kV/mm |
IEC 60243 |
|
Volume resistivity |
≥10 14 Ω.cm |
IEC 60093 |
|
Hot melt adhesive technical specifications |
||
|
performance |
index |
Test methods |
|
softening point |
95±5 ℃ |
ASTM E 28 |
|
Water absorption rate |
< 0.5% |
ASTM D 570 |
|
Peel strength ( PE ) |
≥ 80 N/ 25mm |
GB/T23257-2009 |
|
Peel strength ( FE ) |
≥100N/25mm |
ASTM D 1000 |
|
Peel strength (epoxy resin) |
≥100N/25mm |
ASTM D 1000 |
Product Selection
|
Specification mm |
Free full shrinkage size, mm |
Standard packaging rice / root |
|||
|
inner diameter |
Outer wall thickness |
Adhesive layer wall thickness |
Total wall thickness |
||
|
Φ40/ 12.7 |
≤12.7 |
2.40±0.30 |
0.80±0.15 |
3.30±0.35 |
1.22 |
|
Φ50.0/ 16.0 |
≤16.0 |
2.40±0.30 |
0.80±0.15 |
3.30±0.35 |
1.22 |
|
Φ60.0/ 19.0 |
≤19.0 |
2.50±0.30 |
0.80±0.15 |
3.30±0.40 |
1.22 |
|
Φ70.0/ 22.0 |
≤22.0 |
2.90±0.30 |
0.80±0.15 |
3.70±0.40 |
1.22 |
|
Φ80.0/ 25.0 |
≤25.0 |
2.90±0.30 |
0.80±0.15 |
3.70±0.40 |
1.22 |
|
Φ90.0/ 30.0 |
≤30.0 |
3.00±0.30 |
0.80±0.15 |
3.80±0.40 |
1.22 |
|
Φ115/ 34.0 |
≤34.0 |
3.00±0.30 |
0.80±0.15 |
3.80±0.40 |
1.22 |
|
Φ140/ 42.0 |
≤42.0 |
3.00±0.30 |
0.80±0.15 |
3.80±0.40 |
1.22 |
|
Φ160/ 50.0 |
≤50.0 |
3.10±0.30 |
0.80±0.15 |
3.90±0.40 |
1.00 |
|
Φ180/ 65.0 |
≤65.0 |
3.10±0.30 |
0.80±0.15 |
3.90±0.40 |
1.00 |
|
Φ200/69.0 |
≤69.0 |
3.10±0.30 |
0.80±0.15 |
3.90±0.40 |
1.00 |
|
Φ230/78.0 |
≤78.0 |
3.10±0.30 |
0.80±0.15 |
3.90±0.40 |
1.00 |
Note: Special specifications and sizes can be customized.
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