Heat shrinkable technology
Covalence
The original Heat-shrinkable Technology,
we invented it in 1957
About Covalence
Heat-shrinkable multi-layer sleeves that have high electrical resistance and low permeability.
Product line
A series of 2- and 3-layer heat-shrinkable sleeves for applications including pipeline field joint corrosion prevention, mechanical protection, and sealing of district heating and district cooling pipelines.
Corrosion prevention
An irradiation cross-linked & stretched polyolefin backing with an adhesive laminated on in order to form the basic product. The adhesive may be either visco-elastic based mastic or co-polymer hot melt adhesives to match up with in-service performance requirements.
Features & Benefits
- Irradiation Cross-linked polyethylene and polypropylene backings
- Adhesives formulated for maximum corrosion prevention at low, ambient and high pipeline operating temperatures
- 100% solids epoxy primers for 3-layer systems utilizing "wet-system" application technology
- Products tailored for specific applications from large diameter water pipelines to high temperature oil & gas pipelines
- Global sales and technical support teams
Protecting the future
Protecting the future
Protecting the future
State-of-the-art performance
Approval by testing agencies around the world guarantees suitability for individual applications and field conditions.
The Covalence® DIRAX system is a patented three-layer formulation designed specially for HDD installations. The heat shrink sleeves meet all relevant global standards (ISO, EN, AWWA, NACE, GOST) ensuring suitability for pipeline applications and special field conditions.
>0years
as Heat Shrink Sleeve solutions leader
>0
heat shrink sleeve products suitable for applications in any pipeline market
>0
in-house R&D scientists, engineers and technicians actively developing products
40+Yrs
Main Results
Proven in-service performance
With technology born of the atomic age, shrink sleeves are unique in their ability to perform safely and efficiently. Easy-to-understand installation instructions are shipped with every product and clear product labeling allows rapid on-site identification.