Drill pipe thread gauges 石油钻杆螺纹量规
petroleum thread gauges 石油螺纹量规
Trapezoidal thread gauges 梯形螺纹量规
Parallel screw thread gauges 平行螺纹量规
Steel conduit thread; thread gauges, "go" and "not go" thread plug gauges.
钢制管螺纹。螺纹量规。过端和不过端螺纹塞规。
The common thread gauges including ring gauges and plug gauges are used to calibrate thread work pieces with GB and ISO standards.
普通螺纹量规（螺纹环规、螺纹塞规）适用于检测符合国家标准及国际标准的螺纹制件。
This paper describes a new method and device for measuring helical line, pitch diameter, taper and half-angle of thread of petroleum thread gauges.
本文介绍一种测量石油螺纹量规的螺旋线、中径、锥度和牙形半角的新方法及装置。
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