external pipe thread

基本解釋

According to connection method classification (1) threaded connection valves: valve with internal thread or external thread , and pipe thread connection.
按連接方法分類（1）螺紋連接閥門：閥體帶有內(nèi)螺紋或外螺紋，與管道螺紋連接。
Both have the same pitch diameter at the top of the hole of internal threads or end of the pipe on external threads, and both have the same thread lengths or depths.
在內(nèi)螺紋的孔的頂端或者外螺紋的管的端部擁有相同的中徑，而且擁有相同的螺紋長(zhǎng)度和深度。
756631880.qzone.qq.com
The invention also relates to a method and a device for manufacturing the external thread of the sealing pipeline and a thread pair pipe fitting of a guide-type interference fit pipe.
本發(fā)明還涉及密封管道外螺紋的制造方法、制造裝置以及導(dǎo)入式過盈配合管螺紋副管件。
ip.com