Heat cured

Heat curing is a thermal stabilization process where a coating applied to a steel pipe is subjected to controlled elevated temperatures to initiate a chemical cross-linking reaction.

The Polymerization Mechanism

In the context of tube and pipe protection—specifically regarding powder coatings or liquid epoxies—heat curing is the stage that transforms a fragile, applied layer into a rugged, protective "skin." When the coated pipe enters a curing oven (typically ranging from 180 degree celsius, the heat causes the polymer resins to melt, flow into a continuous film, and then chemically react (polymerize).

This creates a high-density, three-dimensional molecular structure that is significantly more durable than air-dried paints.

Synergy with Galvanizing: When heat curing is used for a Duplex System (powder coating over galvanizing), the temperature must be carefully monitored to avoid "outgassing," where trapped air in the zinc coating expands and creates pinholes.

Performance: A properly heat-cured finish provides superior adhesion, high impact resistance, and a barrier against UV degradation and chemical salt spray.