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  1. HOME
  2. Standards for GB/T 6139-1997

GB/T 6139-1997

GB/T 6139-1997, Total:3 items.

The international standard classification for "GB/T 6139-1997" includes: Drills, countersinks, reamers .

The Chinese standard classification for "GB/T 6139-1997" includes: Cutting tools .

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

  • GB/T 6139-2007 Subland twist drills—Technical specifications
  • GB/T 6139-1997 Subland twist drills-Technical specifications
  • GB/T 6139-1985 Subland twist drills with taper shanks for holes prior to tapping screw threads

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