Polyurethane coating is an anticorrosive coating for pipe fittings,steel pipes,flanges and other piping products.It is mainly composed of isocyanate-NCO and hydroxyl.

Flange coating with interthane-990 Polyurethane

Advantages of polyurethane coating:

(1) good physical and mechanical properties.Its film is hard, bright, flexible,strong adhesion, wear  resistant.

(2) excellent corrosion resistance.It is resistant to oil, acid, chemicals and industrial waste gases.

(3) better aging resistance than epoxy coating.Used as topcoat or primer.

(4) polyurethane resin can be miscible with a variety of resins, and the mixing formula can be adjusted to meet various requirements for use.

(5) can be solidified at room temperature or heat curing, low temperature even arrived at 0℃ can cure.

(6) pipe products coated with polyurethane have a long service life.

Disadvantages of polyurethane coating:

(1) the storage stability of the polyisocyanate is poor, and the moisture must be isolated to avoid gelation.

(2) slightly less alkali resistant than epoxy coating.

(3) the price of polyurethane coating is relatively high.

Haihao Group manufacture steel pipes,butt welding pipe fittings,forged pipe fittings,forged flanges more than 30 years,the coating of the piping products includes black paint,anti-rust oil,varnish,galvanized,epoxy resin,PBE,FBE,etc.If you want to know more about our products,please email us:sales@haihaogroup.com