How to Select the Proper Pretreatment for Metals

1. Steel, iron: decreasing, sandblasting and phosphatizing

2. Aluminum alloy (Standard): decreasing, chromating

3. Aluminum (die-casting): chromating

4. Magnesium alloy: decreasing, chromating

5. Magnesium alloy (die-casting): chromating

6. Galvanized, Copper plating, Copper-plated zinc alloy: decreasing, chromating or phosphatizing

7. Galvanized iron plate, galvanized steel plate: degreasing, phosphating or Chromating

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