Heat-Shrinkable Sleeves for Field-Joint Coating
Turnkey EPC Supply for Gas Transmission Pipelines
Product Overview
Our Heat-Shrinkable Sleeves are engineered specifically for field-joint coating on gas transmission pipelines, providing reliable corrosion protection at every welded connection. Designed to integrate seamlessly into turnkey EPC project execution, these sleeves are supplied as a complete system—sleeve, closure, adhesive, and installation accessories—ready for immediate field application.
From pipeline coating specification through to on-site delivery and technical support, we support EPC contractors with a single-source supply solution that simplifies procurement, reduces interface risk, and ensures consistent quality across the entire pipeline length.
Product Specifications
| Parameter |
Specification |
| Product Type |
Heat-shrinkable wraparound sleeve |
| Application |
Field-joint coating for gas transmission pipelines |
| System Construction |
Cross-linked PE backing + hot-melt adhesive (2-layer or 3-layer with epoxy primer) |
| Service |
Buried, submerged, and above-ground gas transmission pipelines |
| Supply Model |
Turnkey EPC supply: product + documentation + technical support |
Key Features & Benefits for EPC Projects
| Feature |
Benefit |
| Turnkey Supply Model |
Single-source procurement for sleeves, primers, closure patches, and installation accessories |
| EPC-Ready Documentation |
Technical data sheets, compliance certificates, installation procedures, and material traceability provided as standard |
| Gas Transmission Pipeline Compatibility |
Suitable for high-pressure gas transmission service; compatible with PE, PP, and FBE mainline coatings |
| ISO 21809-3 Compliant |
Meets international requirements for field-joint coatings on buried and submerged pipelines |
| Consistent Quality Across Project |
Single manufacturing source ensures uniform product performance across all joints |
| Field Technical Support |
Application guidance, training, and on-site support available for EPC project teams |
Turnkey EPC Scope
For turnkey EPC projects, we provide a complete field-joint coating package:
| Scope Item |
Details |
| Heat-Shrinkable Sleeves |
Customized to pipe diameter, joint length, and temperature rating |
| Epoxy Primer (A+B) |
Two-component liquid epoxy for 3-layer systems (where specified) |
| Closure Patches |
Supplied with each sleeve for secure overlap sealing |
| Installation Accessories |
Heating tools, rollers, and application equipment (as required) |
| Technical Documentation |
Data sheets, compliance certificates, installation procedures, and MSDS |
| Traceability Package |
Batch/lot identification, material certificates, and test reports |
| Field Support |
Application training, on-site inspection guidance, and technical consultation |
System Construction
| Layer |
Component |
Function |
| First Layer (3-layer system) |
Two-component epoxy primer |
Bonds to steel; provides cathodic disbondment resistance |
| Second Layer |
High-performance hot-melt adhesive |
Bonds to primer and plant coating; seals the joint |
| Third Layer |
Radiation cross-linked PE/PP backing |
Mechanical protection, moisture barrier, UV resistance |
For 2-layer systems, the epoxy primer is omitted, and the adhesive bonds directly to the prepared steel and plant coating.
Typical Properties (Reference)
| Property |
Typical Value |
| Backing Material |
Radiation cross-linked PE or PP |
| Adhesive Type |
High-performance hot-melt adhesive |
| Backing Thickness |
0.8 – 1.5 mm (product-dependent) |
| Total Thickness |
2.0 – 3.0 mm (product-dependent) |
| Width |
Customized to joint length and pipe diameter |
| Service Temperature |
60°C / 80°C / 110°C / 120°C (grade-dependent) |
| Peel Strength |
Per ISO 21809-3 requirements |
| Cathodic Disbondment |
Per ISO 21809-3 requirements |
Values are indicative and shall be confirmed against the specific CNPetro product data sheet.
Compliance with ISO 21809-3
ISO 21809-3 specifies requirements for field-joint coatings on buried and submerged pipelines in the petroleum and natural gas industries. Heat-shrinkable sleeves fall under Type 14 classifications, with performance requirements based on the maximum design temperature and system construction.
Our sleeves are qualified to the applicable Type 14 classification and are supplied with the documentation required for EPC project acceptance, including compliance certificates, test reports, and material traceability records.
Primary Applications
Gas transmission pipelines – Field-joint coating at girth welds on high-pressure transmission lines
Turnkey EPC projects – Single-source supply for pipeline construction contractors
Buried, submerged, and above-ground service – Onshore and offshore gas transmission environments
Compatible mainline coatings – PE, PP, FBE, and bitumen plant coatings
Pipeline rehabilitation – Field-joint repair and coating restoration
Why Choose CNPetro for EPC Projects?
Single-Source Supply – Sleeves, primers, accessories, and documentation from one manufacturer
EPC-Ready Documentation – Compliance certificates, test reports, and traceability packages provided as standard
Technical Support – Application training and on-site guidance for EPC project teams
Consistent Quality – Uniform product performance across every joint in the project
ISO 21809-3 Compliance – Qualified to international standards for field-joint coatings
Packaging and Availability
| Item |
Details |
| Configuration |
Wraparound sleeve with closure patch and installation accessories |
| Dimensions |
Customized to pipe diameter, joint length, and temperature rating |
| Packaging |
Individually wrapped in sealed packaging; project-specific cartons |
| Documentation |
TDS, MSDS, compliance certificates, installation procedure, traceability records |
CNPetro — Protecting pipelines. Advancing performance.
For EPC project inquiries, product data sheets, or technical consultation, please contact our sales team.
Keywords: heat-shrinkable sleeves, field-joint coating, turnkey EPC project, gas transmission pipeline, ISO 21809-3, pipeline corrosion protection, wraparound sleeve, EPC supply
Your message must be between 20-3,000 characters!
