Covalence
The original Heat-shrinkable Technology,
we invented it in 1957
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
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
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.