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epoxy powder anti-corrosion coated steel pipe is a steel pipe with polymer coating sprayed on the surface of the steel pipe, which has the characteristics of anti-corrosion, wear resistance, acid and alkali resistance, and anti-aging. the production process generally includes the following steps:
surface treatment of steel pipes: firstly, the surface of steel pipes needs to be treated by sandblasting, shot blasting, etc. to remove impurities such as surface scale, oil stains, and rust, to prepare for the next step of coating construction.
primer spraying: spray primer on the steel pipe surface, generally use epoxy primer or polyurethane primer. the function of the primer is to protect the surface of the steel pipe and improve the adhesion of the coating.
powder coating spraying: add the powder coating into the spray gun, and spray the coating on the surface of the steel pipe through processes such as electrostatic adsorption and drying and curing. there are many types of powder coating, such as epoxy, polyester, polyurethane, baking varnish, etc., and the appropriate coating can be selected according to different requirements.
curing and baking: put the coated steel pipe into the baking room for curing and baking, so that the coating is cured and tightly combined with the surface of the steel pipe.
cooling quality inspection: after the baking is completed, the steel pipe is cooled and inspected for quality. quality inspection includes coating visual inspection, thickness measurement, adhesion test, etc. to ensure that the product meets relevant standards and requirements.
the above is the general production process of epoxy powder anti-corrosion coated steel pipe. different manufacturers may make certain improvements and innovations according to their situation and technical level, but the basic production steps are roughly the same.