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Radiation Cross-Linked PE Heat Shrink Sleeve for Pre-Insulated Pipe Girth Weld Joint
Our high-performance radiation cross-linked PE heat shrink sleeve is a professional pre-insulated pipe girth weld joint protection material exclusively developed for sealing and anti-corrosion protection of district heating pre-insulated pipe joints, chilled water distribution pipeline joints, and PU foam insulated pipeline girth weld connections - the standard field joint coating solution for buried pre-insulated pipe systems worldwide.
This pre-insulated pipe joint heat shrink sleeve adopts premium two-layer composite construction: radiation cross-linked polyethylene backing (tensile strength 19.47MPa, elongation 626%) matched with high-adhesion imported hot melt adhesive (peel strength 145.6N/cm to steel) - together forming an integrated, seamless protective barrier that maintains the thermal insulation integrity and anti-corrosion performance of every pre-insulated pipe girth weld joint to the same standard as the factory-manufactured pipe sections.
For complete long-term underground protection, this radiation cross-linked PE heat shrink sleeve must be used with a supporting non-solvent two-component epoxy primer - together forming a continuous, gap-free anti-corrosion and waterproofing system at every district heating pre-insulated pipe girth weld connection, eliminating the primary failure point of buried pre-insulated pipeline networks.
Available in three configurable supply styles with thickness options from 1.2mm to 2.5mm and widths from 100mm to 900mm - covering all pre-insulated pipe, district heating, and municipal pipeline girth weld joint protection specifications.
Key Characteristics
Purpose-Built for Pre-Insulated Pipe Girth Weld Joint Sealing
Specifically engineered for the unique demands of pre-insulated pipe girth weld joints - where the sleeve must simultaneously seal against groundwater ingress, maintain polyurethane foam thermal insulation integrity, and provide long-term anti-corrosion protection to the exposed steel carrier pipe at every joint connection.
Fast & Simple On-Site Pre-Insulated Pipe Joint Installation
Supports easy heating-only on-site installation - no special tools, no surface grinding, no complex equipment required. When heated by standard propane torch, the radiation cross-linked PE outer layer shrinks uniformly around the pre-insulated pipe joint diameter while the inner hot melt adhesive melts evenly.
Factory-Grade Pre-Insulated Pipe Joint Protection Standard
Combining this radiation cross-linked PE heat shrink sleeve with non-solvent two-component epoxy primer creates a continuous, solid, gap-free protective barrier at every pre-insulated pipe girth weld joint - maintaining the same thermal insulation and anti-corrosion performance standard as the factory-manufactured district heating pre-insulated pipe sections.
Core Product Benefits
Pre-Insulated Pipe Girth Weld Waterproofing: Permanently seals district heating and chilled water pre-insulated pipe joints against groundwater ingress
Outstanding Chemical Anti-Corrosion Resistance: Effectively resists erosion from 10% HCl, NaOH, NaCl, and all harsh underground chemical media
Extreme Temperature Range Performance: Vicat softening point ≥90°C; brittleness temperature <-65°C - reliably serving buried district heating pre-insulated pipe joint protection
Superior Electrical Insulation: Dielectric strength ≥25MV/m; volume resistivity ≥1*10¹³Ω.m - maintaining full cathodic protection system compatibility
Universal Pre-Insulated Pipe Joint Solution: Compatible with black and yellow jacket HDPE pre-insulated pipes, PU foam insulated steel pipes, and all standard district heating pipeline girth weld joint connection configurations
Applications
District Heating Pre-Insulated Pipe Girth Weld Joint Sealing - seals every pre-insulated pipe girth weld connection against groundwater ingress and thermal insulation degradation
Chilled Water Pre-Insulated Pipe Joint Protection - seals chilled water distribution pre-insulated pipe joints where temperature differential creates persistent condensation risk
Petroleum Products Transmission Steel Pipe Field Joint Coating - provides factory 3LPE equivalent anti-corrosion protection at every pipeline girth weld joint
3LPE/2LPE Anti-Corrosion Coated Steel Pipe Weld Joint Repair - restores full anti-corrosion system integrity at field joints and coating damage points
Municipal Drainage Corrugated Pipe Joint Anti-Corrosion Wrapping - provides waterproof and anti-corrosion joint protection for various sewage pipes
Product Parameters
Features:
Fast uniform shrinkage speed for high-efficiency pre-insulated pipe girth weld joint field construction
Superior fully sealed waterproof performance blocking groundwater penetration at district heating pre-insulated pipe joints
Premium long-term anti-corrosion and thermal insulation protection consistent with factory pre-insulated pipe coating standard
Ultra-long buried service life for permanent district heating pipeline girth weld joint protection
Pure virgin PE raw material and imported hot melt adhesive - stable, consistent batch quality
Technical Parameters - Back Material:
NO
Test Item
Unit
Performance
Test Result
Test Method
1
Tensile Strength
MPa
≥17
19.47
ASTM D638
2
Elongation
%
≥400
626
ASTM D638
3
Vicat Softening Point
ºC
≥90
92
ASTM D1525
4
Brittleness Temperature
ºC
<-65
<-65
ASTM D2671C
5
Dielectric Strength
MV/m
≥25
33.13
ASTM D149
6
Volume Resistivity
Ω.m
≥1*10¹³
1.1*10¹³
ASTM D257
7
Environment Stress Crack
h
≥1000
>1000
GB/T1842
Technical Parameters - Adhesive:
NO.
Test Item
Unit
Performance
Test Result
Test Method
1
Softening Point
ºC
≥90
90.1
ASTM E28
2
Brittleness Temperature
ºC
<-15
<-15
ASTM D2671C
3
Lap Shear
MPa
≥1.0
1.5
ASTM D1002
4
Peel Strength (23±2ºC)
N/cm
≥70
145.6
ASTM D1000
Ordering Information
We supply three configurable styles of radiation cross-linked PE heat shrink sleeve for pre-insulated pipe girth weld joint protection:
Pre-cut heat shrink sleeve with separate closure patch - standard configuration for most district heating and chilled water pre-insulated pipe girth weld joint applications
Pre-cut heat shrink sleeve with pre-attached integrated closure patch - streamlined single-component installation for faster pre-insulated pipe field joint construction
Continuous heat shrink sleeve roll tape (closure patch ordered separately) - for high-volume district heating pipeline pre-insulated pipe girth weld joint projects requiring customized cut lengths on site
Available Specifications:
Thickness: 1.2mm, 1.6mm, 1.8mm, 2.0mm, 2.5mm
Width: 100mm, 200mm, 300mm, 500mm, 600mm, 900mm
Roll length: 30m or 50m per roll
Custom dimensions available for large-volume pre-insulated pipe girth weld joint projects
Qingdao Huashida independently designs and manufactures full sets of radiation cross-linked PE heat shrink sleeve production line equipment - available as a complete turnkey package alongside finished sleeves for pre-insulated pipe girth weld joint protection.
Customer Cases
Company Profile
Qingdao Huashida Machinery Co., Ltd. is a professional manufacturer with 21 years of experience specializing in pre-insulated pipe girth weld joint protection materials - including radiation cross-linked PE heat shrink sleeves for district heating and chilled water pipelines, electro-fusion weldable joint sleeves, and PE cold applied anti-corrosion tape.
Our main products include:
Radiation Cross-Linked PE Heat Shrink Sleeves - for pre-insulated pipe girth weld joints, oil and gas pipeline field joint coating, and drainage pipeline joint protection
HDPE jacket pipe pre-insulated pipe production line (110-2200mm, district heating and chilled water)
Rigid PUR spray PE wrapping pre-insulated pipe production line (508-1620mm)
Flexible pre-insulated pipe (PERT) production line
1. company profileQingdao Huashida Machinery Co., Ltd. is located in Qingdao High & New Technology Industrial Area- Qingdao Huashida industrial Park, covers an area of about 4000 square meters. We have tens of years experience in plastic pipe, sheet, and board extrusion lines, and pipe joints a...
1. company profileQingdao Huashida Machinery Co., Ltd. is located in Qingdao High & New Technology Industrial Area- Qingdao Huashida industrial Park, covers an area of about 4000 square meters. We have tens of years experience in plastic pipe, sheet, and board extrusion lines, and pipe joints a...
