2017GB/T 1132-2017 Machine chucking reamers with cylindrical shanks and Morse taper shanks
2004GB/T 1132-2004 Machine chucking reamers with parallel shanks or Morse taper shanks
1984GB/T 1133-1984 Machine reamers with Morse taper shanks
0000年 GB 1133-1973
GB/T 1133-1984 Machine reamers with Morse taper shanks was changed to GB/T 1132-2004 Machine chucking reamers with parallel shanks or Morse taper shanks.