But the uniformity, smoother, luminous and thicker coating was obtained when the pulse power galvanization was used.The galvanization of steel pipe wall was realized which was very difficult.

• 但用脉冲电源电镀钢管，镀层比较均匀，镀层较厚，较光滑光亮，实现了非常难镀的钢管内壁的电镀。