What grade is best for heavy-duty Galvanized plate?
In the field of heavy engineering, ASTM A653 G90 (zinc coating mass 275g/㎡) is the mainstream choice. Its salt spray test life reaches 4800 hours (ISO 9227 standard), which extends the anti-corrosion period by 62% compared with the common G60 specification. In 2024, the Three Gorges Hydropower Station gate renovation project adopted this grade of …
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