Anti-corrosive coating for pipeline products

As we all know,there are many types of pipeline corrosion.Different types of coatings are designed to mitigate corrosion in different environments, including plant-manufactured systems and construction site tapes.Read this article you will know several main types of pipeline coating and its advantages and disadvantages.

Coal Tar Enamel Coatings

Advantage: These have fair adhesion to steel

Disadvantage: There are severe health concerns associated with their use

Metallic Spray Coatings

The application of sprayed thermal coatings, such as zinc and aluminum, is advantageous in submerged piping systems. These coatings offer corrosion protection under varying environmental conditions at a low cost.

For very-high temperature pipes, refractory linings, polyurethane linings, metallic coatings and concrete-mortar linings are used.

Steel pipes coating with intergard 475HS epoxy

Epoxy (Fusion-Bonded)

Advantage:

• This coating has excellent adhesion to steel
• It can resist disbondment

Disadvantage:

• It needs high-temperature application
• It has poor abrasion resistance

Plant-Applied Tape Systems

Advantage: These have good adhesion to steel

Disadvantage: They may face blistering problems under stress

Polyolefin (Crosshead Extruded) with Butyl Adhesive

Advantage:This coating is non-polluting

Disadvantage:

• It has low adhesion strength with steel pipes
• It may suffer disbondment due to cathodic protection

Polyolefin (Dual-Side Extruded) with Butyl Adhesive

Advantage:

• This coating has a good adhesion to steel
• It can resist disbondment due to cathodic protection

Disadvantage: It can’t be removed for pipe repair

Multi-Layer Extruded System of Polyolefin or Multi-Layer Epoxy Systems

Advantage:

• This coating has excellent adhesion to steel
• It resists disbondment due to cathodic protection
• It has high abrasion resistance
• It has resistance to hydrocarbons

Disadvantage:

• There’s a high initial cost
• Stringent application parameters must be followed

As a professional pipeline supplier, Haihao Group often advises customers to use suitable pipeline materials and coatings according to the product use environment.So as to reduce corrosion of pipeline products and extend its service life.If you want to know more about our piping products or you want us to advise on your pipeline,please email to us:sales@haihaogroup.com

Cold galvanized 90 degree pipe elbows finished in Haihao Group