Surface treatment that does the job

Every application requires a suitable surface treatment for the steel pipe system to do its job properly. The right surface coating for the right task also keeps the investment at the right level.

Alvenius FlowMax® pipes can be supplied with a range of different surface coatings that can for example reduce flow resistance, protect against corrosion or make the pipe easier to handle.
We can also supply entirely untreated – or painted – pipes for indoor environments.

CorroFlo® (thermoplastic coating)

FlowMax® pipies with CorroFlo® coating have unbeatable low flow resistance, and thus contribute to low energy consumption in the piping system.

FlowMax® CorroFlo®-coated pipes are also ideal in environments where for example acidic water is a problem. 

Moreover, the CorroFlo® coating minimises the risk for build-up of deposits on the inside of the pipe.

Alvenius FlowMax® pipes can be supplied 
in different RAL colours.

CorroFlo® (thermoplastic coating)

  • CorroFlo® coating – unique properties

    CorroFlo® coated pipes are ideal in environments where for example acidic water and aggressive chemicals are a problem. Tests have shown that CorroFlo®-coated pipes meet the requirements of the marine environment’s most demanding corrosivity classification C5-M.
    The surface treatment also minimises the build-up of deposits on the inside of the pipe.
    Independent tests show thatCorroFlo®-coated pipes have an expected life of at least 50 years – even in aggressive environments.
    Low pressure drop due to low inner friction.

  • As strong as steel. As resistant to corrosion as plastic.

    Alvenius CorroFlo®-treated steel pipe systems are coated inside and out with a specially adapted thermoplastic - “Performance polymer alloy”(CorroFlo®). The system combines the strength of steel with the superior corrosion resistance of plastic.
    CorroFlo® pipes are a cost effective choice in applications where, historically, stainless steel was considered to be the only alternative.

    CorroFlo® pipes are ideal in industries such as chemical engineering, pulp and paper, hydroelectric power, offshore, water treatment and mining. In these very corrosive environments, the CorroFlo® pipes’ powerful properties of resistance come into their own.

  • Properties of CorroFlo®

    Very good adhesion – no risk of scaling or cracking
    High elasticity – 800% elongation at break
    High resistance to chemicals, especially acids and alkalis
    Proven outdoor properties, UV stable, flexible down to -40°C
    Working temperature in air, continuous max. +65°C
    Very good anticorrosion properties
    Electrically insulated
    Environmentally friendly
    Very low coefficient of friction (k value ca 0.05)

  • Ideal areas of use

    Alvenius CorroFlo®-coated steel pipe systems are used in different types of industries and applications worldwide. For example:

    Mining and mineral enrichment
    Chemical industry
    Municipal water and drainage
    Paper and cellulose industry
    Foodstuffs industry
    Foundation tubes
    Building and construction
    District cooling
    Artificial snow
    Fire fighting

    The pipe system is ideal for transportation of process and cooling water, sewage, drainage, fire sprinkler water, etc.
    The system can be adapted for other types of piping, and special structures can be developed on request.

CorroFlo® + RocShield®

CorroFlo® + RocShield®

FlowMax® pipes with CorroFlo® coating can also be treated 
with RocShield® on the outside. 

This coating gives an even more durable outer surface.

HDG - Hot-dip galvanization

A very robust outer coating that is ideal for pipes that are to be frequently disassembled/assembled. 
In the event of damage, the zinc coating “heals” itself.

HDG - Hot-dip galvanization

  • Very high durability

    The deeply penetrating shield makes hot-dip-galvanized pipe more impact resistant and more resistant to weather and wind than pipes that just have a plain surface protection.
    The zinc layer also has the unique property of being able to “heal” itself if the outer surface is damaged.

    In normal environments and with the right thickness of coating, hot-dip galvanization gives perfect protection for 50-100 years. In more aggressive environments the life cycle is 24-50 years. Moreover, hot-dip galvanization has low environmental impact.

    Alvenius products are hot-dip galvanized in accordance with European Standard EN ISO 1461:2009

  • Read more about hot-dip galvanization (HDG)

    Hot-dip galvanization (HDG) gives deep protection. It is a type of electrochemical galvanization process in which the pipe is coated with a thin layer of zinc through electrolysis, to prevent corrosion.
    The chemical reaction causes the rust preventive layer to bite fast a little way into the steel itself – the coating thus becoming metallically bound to the steel.

Rubber lined internal surface

Rubber lined internal surface

For transportation of slurry and extremely abrasive media.

Painted pipes

FlowMax® pipes can be supplied painted in optional RAL colours.

Painted pipes