大小头 meaning in English
change-over sub
concentric reducer
heteracephalus
increaser
pipe reducer
reducing nipple
swage
transition pipe
xo sub
Examples
- Jdx reduced rubber joint big and small joint - changmao
Jdx型异径橡胶接头大小头- changmao - Reducing coupling threaded
No . 240w大小头内螺纹式 - Reducing coupling thread
No . 240n大小头内螺纹式 - Teflon - lined pipe , casing , elbow , the three exchanges or four , size head , cylinder , air compressor - oxygen - ring , gasket seal ring and auto parts
聚四氟乙烯内衬直管，套管，弯头，三通，四通，大小头，筒体，空压机-制氧机-活塞环、密封圈和汽配封圈。