铁套镀铜，锌合金芯，两把铁钥匙！

Iron cover with brass plated, zinc core with two iron keys.

youdao

水头、轴头、采用生铁套，耐磨耐用，提升装置分电动和手动两种。

Head, shaft head, using cast iron sleeve, wear durability, lifting equipment sub-two kinds of electric and manual.

youdao

螺旋轴的入水头、轴头、采用生铁套，耐磨耐用，提升装置分电动和手动两种。

The head and spindle nose of the screw shaft use the pig iron which is durable and wear-resisting. The lifting equipment can be divided into motor operation and hand operation.

youdao