无论是用管道输气、输油，凡有管道的地方，都少不了弯头、异径接头、三通、管帽等管件。
Nomatter transporting gas or oil, there are pipelines, there are pipe fittings such as bend pipe, reducing joint, T-pipe, pipe cap and so on.
它由瓶塞穿孔器、加药三通、滴壶、控制夹、变径接头、头皮针和粗、细导管等构成。
The utility model is composed of a bottle stopper perforator, a triplet with plus drug, a drip kettle, a control clamp, a reducer union, scalp acupuncture, a thick and a fine conduit pipe.
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