Epoxy coating steel pipe

The internal and external coating epoxy resin coating steel  pipe is after many years of research, experiment, the latest development of a new type of tubing. Steel pipe for the base tube, using the modified epoxy resin powder on the internal and external wall coating of pipe. The plastic coated layer and steel strong bonding force, strong corrosion resistance, drag reduction, anticorrosive, compressive strength, the action such as antibacterial, good chemical stability and water resistance. It is generally not the restriction of the transmission medium, and no \"run, run, drip, crack\" the trouble back at home. It is widely used in municipal water supply, fire fighting, oil, gas, chemical industry, the pollution, mining, agricultural irrigation in the fields of fluid conveying, to replace high energy consumption, easy to rust, scale, life is short, heavy traditional tubing pipes, steel pipe, etc

Internal and external coating of epoxy resin composite pipe production process

Inside and outside the base carbon steel pipe coating epoxy resin first (galvanization steel tube) as the image preprocessing to grind the advantages: steel pipe automatic spraying uniform base material internal and external wall coating, good flowing property. CJ/T120-2008 standard and GB/T5135.20-2010 standard - will grind the good steel tube into the electric heating oven preheated, when the temperature reaches 230 ° ~ 250 ° (general preheating around one and a half hours) - the preheated pipe coating, coating, in the cases of solidifying (when the temperature reaches 200 degrees 15 minutes) - finished products. After spraying heating equipment preheat to 180 degrees to solidification of spray is good base material, advantage: when spraying epoxy resin powder is still not fully clinkering in base material of inside and outside wall, after 30 minutes of preheating curing, the curing agent of epoxy resin cured, makes the internal and external wall coating adhesion is stronger.

Construction of internal and external coating epoxy resin composite steel pipe surface pretreatment of the requirements of the quantitative indicators, the oil industry are relatively specific, such as:

Preheat tube before 1, shot blasting derusting, expelling dampness, preheating temperature of 40 ℃ ~ 60 ℃;

2, derusting should reach GB/T8923 rusting grade steel surface before painting and descaling grade Sa2.5 level, in the steel pipe surface anchor pattern depth of 40 microns to 100 microns.

3, mild steel pipe surface residual rust dust should be removed;

Be conducted within 4 h after 4, surface pretreatment coating;

...... And so on.

Once belong to take cover engineering, surface pretreatment coating coverage, whether the rust removal, it is hard to check whether clean thoroughly, and surface pretreatment is also costs money, so some enterprises to downplay the surface pretreatment, to save money, but in the end, the effect will be reflected in a product, pretreatment on the surface, the coating is solid, surface pretreatment of coating will fall off.

Our company supply carbon steel pipe with kinds of coating.