Home / Standards / GB/T 6135.1-1996 GB/T 6135.1-1996 Straight shank twist drills — Part 1: Types and dimensions for small straight shank twist drills 直柄麻花钻 第1部分:粗直柄小麻花钻的型式和尺寸 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A