pin and box

male and female cross

阳螺纹-阴螺纹十字接头

boxpin connection

阴螺纹-阳螺纹连接

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-box pipe

阳螺纹-阳螺纹管子

Nuts have internal (or female) threads to match those of the Bolt.

螺母上有内(或阴)螺纹,与螺栓上的螺纹相啮合。

pipe bend with female thread

两头带阴螺纹的弯头

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

coupling straigth-way cock

两端带阴螺纹管接的直通旋塞

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