Surface prepartion

The corresponding treatment method should be used based on the substrates, such as phosphating,

chromizing, shot blasting or blast cleaning

1. The surface roughness should be 30 ~75 μm if reaching Grade Sa2.5 by shot blasting

or blast cleaning.

2. Phosphating: degreasing- derusting- neutralizing- surface control- phosphating- passivating

Appearance of phosphating film: The phosphating film should be crystallized densely,

continuously and evenly.

3. Chromizing: degreasing- rinsing- immersion cleaning- deoxidating- rinsing- chromizing

Method of Application

1. high voltage electrostatic spraying

2. Spraying voltage: 50-90 kV; air pressure for spraying: 0.1-0.2 Mpa;

3. Distance between the gun and workpiece: 200-300 mm

4. Curing condition: 200℃/15 minutes or customized according to customers’ requirements.

5. Additional coating: spraying and curing should be made after polishing the omitted part

with sand paper and spraying the whole surface.

Greentech (Tianjin) Anti-corrosion Engineering Tech Co.,Ltd. was founded in 2011, is a large-scale research and development of powder coating and production-oriented enterprises. The mainly product is thermosetting powder coating. The company registered capital is 12 million RMB, currently has 120 employees, the company office located in Huayuan industry high-tech park, the factory is located in Xiqing district Zhangjiawo Industrial Park, the company owns 26 production line, the annual production capacity of 24,000 tons.
The company mainly produces epoxy powder coating, epoxy polyester powder coating, polyester powder coating, have more than 1,000 kinds of powder coating. Since the founding of the company has always adhered to the field of powder coatings for research and development direction, has been successfully developed and put into production "special radiator powder", "high-end bicycles (electric vehicles) special powder", "pipe special powder", "locomotive parts Surface spray powder "," valve powder "and many other special products, The sales volume are up to top ten for several years.

The company always provide customers with stable and reliable quality products, owns the ISO9001 quality, 14000 environmental management system certification. International advanced quality testing equipment, and fine processing technology formed a set of characteristics of the quality control process, good technical support and after-sales service system. "Quality is stable, consistent" has become the industry consensus on the quality of the company's products.