钻孔尺寸

drill pipes───钻杆；钻探管（drillpipe的复数形式）

drill bits───钻头

drill pipe───[油气]钻杆，[油气]钻管；钻探管

drill rigs───钻机；凿岩机

drill ships───钻井船；教练船

drill stem───[机]钻柱；[机]钻杆；钻具

drill stems───[机]钻柱；[机]钻杆；钻具

drillpipes───钻杆

trim sizes───实际尺寸

Variable bore ram-type blowout preventer, the improved type, is capable of sealing drill tools whose sizes are within a certain range, and has advantages of low cost and convenience.───可变径闸板防喷器作为新型的闸板防喷器，能够密封一定范围内多种规格的钻具，具有成本低，使用方便的优点。

Variable bore ram-type blowout preventer, as an improved blowout preventer, is capable of sealing around drill pipes with a range of sizes and has advantages such as low cost and convenience.───可变径闸板防喷器作为新型的闸板防喷器，能够密封一定范围内多种规格的钻具，具有成本低、使用方便等特点。

Main products are drill and screw, which almost cover all the sizes and configurations.───主要产品是钻头和螺杆，我们提供几乎所有型号和结构。

Recommendations for tapping drill sizes for use with fluted taps───带槽丝锥用螺纹底孔钻头尺寸推荐标准

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