ASTM A123 Standard Specification For Zinc Galvanized Carbon Steel Pipe

Hot-dip galvanizing (HDG) is the process of coating fabricated steel by immersing it in a bath of molten zinc. There are three fundamental steps in the hot-dip galvanizing process; surface preparation, galvanizing, and inspection.When the fabricated steel arrives at the galvanizing facility, it is hung by wire or placed in a racking system which can be lifted and moved through the process by overhead cranes.

The steel then goes through a series of three cleaning steps; degreasing, pickling, and fluxing. Degreasing removes dirt, oil, and organic residues, while the acidic pickling bath will remove mill scale and iron oxide. The final surface preparation step, fluxing, will remove any remaining oxides and coat the steel with a protective layer to prevent any further oxide formation prior to galvanizing.

Hebei Synda International Trade Co., Ltd. is an import and export company (Subsidiary of Synda Group) approved by the People’s Republic of China. The company was established in September 2017 with a registered address in Cangzhou City, Hebei Province, China.Main business covers the import and export of goods and the sale of steel pipes , Application and development of metal materials, project development of valves and various steel pipe fittings. The product types include spiral steel pipes, straight seam steel pipes, seamless steel pipes, rectangular pipes, hot-rolled steel plates, cold-rolled steel plates, angle steel I-beams and other profiles, stainless steel pipes and various pipe fittings and valves. After years of development, the company's products have been applied to many large Chinese engineering projects, and are also exported to Southeast Asia, Central Asia, the Middle East, Africa, Europe, South America, North America and other countries and regions,have won wide recognition from many customers.

We has an efficient management team that is diligent in thinking and daring to climb. We have always been adhering to the tenet of "serving customers, mutual benefit and win-win", serving our partners wholeheartedly, and are willing to work together with partners for future development.