1. The separation and purification process of ChangZeng will be conducted for several times. It is separated from the complicated mineral aggregates and refined at least two times for high purity. It complies with the standards of GB, ASTM, JIS, BS, EN, TOCT, KSD, IS, etc
2. Shanghai ChangZeng Metal Co., Ltd. purchases advanced, reliable and quality equipment to produce to top-performance rolled steel channel . It is chosen for its higher resistance to corrosion
3. The product is highly resistant to corrosion. Constructed from heavy-duty metal materials that have passed the salt spray test, it is impervious to chemicals. Its heat treatment includes annealed, quenched, tempered, etc
4. The product features the desired durability. After numerous times of repeatability and reproductivity, it still can run without any sudden failure. Its sizes and thicknesses are customizable for different applications
1. As a professional manufacturer of , the business scope of Shanghai ChangZeng Metal Co., Ltd. is wide. It includes designing and developing products to meet the development needs of customers. ChangZeng unremittingly optimize technology and improve the quality of rolled steel channel .
2. Advanced technology is adopted to improve the quality of pressed steel section .
3. ChangZeng devotes to concentrate on the technical innovation and optimization. We deliver our value proposition in several areas through innovation, rationalization, optimization, and automation enabled by our people, products and services.