管螺母 meaning in Chinese

pipe nut

The measuring insert is fixed to the case by a union nut
插入测量头是通过联管螺母固定在外壳上。
Compression couplings with olives ; swiveling fittings for use with union nuts
椭圆形压接连接的管接头.用联管螺母旋转连的管接头
Compression couplings with olives ; cylindrical thread nipples for use with union nuts
椭圆形压接连接的管接头.用联管螺母连接的圆柱形螺纹
Diaphragm type chemical seal " quick coupling " , process connection : union nut or thread neck to din 11 851 , sms - , idf - , apv rjt - norm or clamp
快装型膜片化学密封，过程连接：联管螺母或din 11851 sms - idf - apv rjt -标准的螺纹颈或卡箍。