1) Taper pipe threads with 60 degree
GB/T 12716-1991 60°圆锥管螺纹
2) Dry screw air compressor for general use―Specifications
GB/T 13278-1991 一般用干螺杆空气压缩机技术条件
3) Screw compressor for the process industry―Specifications
GB/T 13280-1991 工艺流程用螺杆压缩机技术条件
4) Terminology of gas cylinders
GB/T 13005-1991 气瓶术语
5) Efficiencies for centrifugal pumps
GB/T 13007-1991 离心泵效率
6) Metric tape screw thread
GB/T 1415-1992 米制锥螺纹
参考词条