Thermoplastic coating

The newest product from Alvenius is the in- and/or outside thermoplastic coated pipe system, called TP-pipe system. This system has within several applications outperformed stainless steel, when it comes to corrosion protection and service life.

What does thermoplastic coating mean?

Thermoplastic coating is a method of melting a plastic powder on to a metal, by the use of heat ("thermo-"), with the purpose of providing a long lasting corrosion protection with no negative effects on the environment. All pipes and pipe fittings undergo holiday testing to ensure the isolation of the coating.

What kind of plastic is it?

The plastic that we use has been especially designed to provide a long lasting, tough coating for mild steel piping. It is based on an alloy of acid modified polyolefins. Therefore it is halogen free and the combustion fumes are low in smoke and have a low toxicity index.

What are the characteristic qualities of this product?

When a specialist applies the coating, this method offers the following benefits:

• Excellent adhesion to the steel, without need for a primer, - no risk for scaling or cracking
• Superior resistance to adverse weather conditions and to UV radiation
• Good chemical resistance, both in acid and alkaline environments
• Approved for potable water and food stuffs
• Excellent flexibility, also at low temperatures, elongation at break is 800%
• High impact strength
• Compared to many other coatings it has high abrasion resistance
• Minimal or no underfilm corrosion, in the event of mechanical damages
• High dielectric strength
• Safe working temperature continous in air + 150ºF / 65ºC
• The coating does not affect the environment, neither during production, use or disposal
• Easy repair in the event of damages, even after many years of use
• The thermoplastic powder is applied in 1 (one) coating between 500-700 m, and can be made in different colours

Where do I find installations of TP-pipe systems today?

Alvenius TP-pipe system will be found in various types of industry where corrosion is a problem. Presumably stainless steel has primarily been the traditional material for the pipes.

For example:

• Mining and mineral processing
• Leaching
• Chemical industry
• Municipal water industry
• Paper and cellulose industries
• Food stuffs industry
• Off-shore
• Desalination plant
• Fire mains
• Foundation tubes