Screw thread limit gauges for parallel pipe threads 圆柱管螺纹量规
Hand taps for parallel pipe threads 平行管螺纹用手攻丝锥
Hand-and machine-operated circular screwing dies for parallel pipe threads 平行管螺纹用手攻和机攻圆板牙
parallel pipe threads 圆柱管螺纹
Hand-and machine-operated circular screwing dies for parallel pipe threads . g series 攻制平行管螺纹的手动控制和机械控制圆螺丝板牙
Hand and machine-operated circular screwing dies for parallel pipe threads, g series iso 4231 : 1987; german version en 24231 : 1989 直管螺纹手动和机动圆板牙.g系列
Pipe threads . checking of parallel pipe threads with limit gauges . plain gauges for external and internal screw threads 管螺纹.用极限量规检查平行管螺纹.检测内外螺纹用的量规
Screwing dies and dienuts-specification for hand-and machine-operated circular screwing dies for parallel pipe threads; g series 螺丝板牙和螺母状板牙.手用和机器操作平行管螺纹用圆形螺丝板牙规范;g系列