1) Pipe threads where pressure-tight jojints are not made on the threads
GB/T 7307-1987 非螺纹密封的管螺纹
2) Pipe threads where pressure-tight joints are mede on the threads
GB/T 7306-1987 用螺纹密封的管螺纹
3) Field balancing equipment--Description and evaluation
GB/T 7221-1987 现场平衡设备的说明和评价
4) Taper pipe threads with 60 degree
GB/T 12716-1991 60°圆锥管螺纹
5) Methods for the assessment of departure from roundness--Measurement of variations in radius
GB/T 7235-1987 评定圆度误差的方法 半径变化量测量
6) Determination of mechanical vibrations of gear units during acceptance testing
GB/T 8543-1987 验收试验中齿轮装置 机械振动的测定
参考词条