【摘要】 阐述了异形管特别是大型输油管的电镀工艺。建议用电镀锌铁合金代替镀锌，化学镀Ｎｉ－Ｐ合金代替镀硬铬。还提出一些可用的操作方法。更多还原

【Abstract】 Electroplating processes for special pipes such as big oil pipes are described. Electroplating Zn-Fe alloy and electroless Ni-P alloy are recommended as substitutions for zinc plating and hard chromium plating respectively. Some workable steps are also presented.更多还原