Set up a slant water hole at reamer, and connect the reamer and pilot with reducing synergy flute, which strengthen the cooling and washing function and ensure the bit's effects.
在扩眼体设一斜水眼，在导眼体与扩眼体之间连接一缩径增效排屑环，强化了冷却清洗作用，从而保证钻头有较好的使用效果。
The existing valve reamer is stationary, and more than ten bits (cutter heads) of one set of reamers are arranged.
现有气门铰刀是固定的，一套铰刀的刀头(刀盘)多达十多只。
The existing valve reamer is stationary, and more than ten bits (cutter heads) of one set of reamers are arranged.
现有气门铰刀是固定的，一套铰刀的刀头(刀盘)多达十多只。
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