external screw thread

pin-to-box pipe

阳螺纹-阳螺纹管子

boxpin connection

阴螺纹-阳螺纹连接

male and female cross

阳螺纹-阴螺纹十字接头

pepe bend with male and female thread

一头带阳螺纹一头带阴螺纹的弯头

box up and pin down

上部阴螺纹-下部阳螺纹接头

pin-to-pin reducer

两头阳螺纹的大小头

double pin sucker rod

两头阳螺纹的抽油杆

external and internal thread grinding machine

外螺纹及内螺纹磨床

Screwed 1;Screwed 2;Screwed 3;Screwed 4

螺纹接头 1;螺纹接头 2;螺纹接头 3;螺纹接头 4

Screwed Joint 1;Screwed Joint 2;Screwed Joint 3

螺纹接头 1;螺纹接头 2;螺纹接头 3

Tubing thread is available for API tubing threads and TM threads.

油管螺纹可采用API油管螺纹，或TM螺纹。

double-screw bolt

螺柱，双头螺纹螺栓

Tapping screws thread

GB/T5280-1985自攻螺钉用螺纹

threaded type track bolt nut chuck

螺纹式轨道螺母夹头

coarse threading attachment

大螺距螺纹切削装置

remove the thread (of screws).

去掉（螺丝钉的）螺纹。

The threads of the screw work hard.

这螺丝的螺纹太涩了。

Apply pipe dope sparingly on pipe threads, never on valve threads.

在管道螺纹上涂敷螺纹油，但是不要在阀门螺纹上涂螺纹油。