Interchangeable drill bushing GB GBT 80452-1999

Interchangeable drill sleeve drill sleeve (GB non-standard) jigs and fixtures parts and components interchangeable drill bushing GB GB / T 8045.2-1999 1. This standard specifies interchangeable drill set 0-85mm 2. Reference Standard: GB / T 699 Technical conditions -1988 quality carbon structural steel GB / T 1298-1986 carbon tool steel technical conditions GB / T 8044-19999 parts and units of jigs and fixtures Technical conditions JB / T 8045.5-1999 parts and units of jigs and fixtures drill bushing screws 3 The illustrated 4. Table 5. Technical conditions size Material: d≤26mm T10A according to GB / T 1298 provisions d> 26mm 20 steel heat treatment prescribed by GB / T 699's: T10A is 58 ~ 64HRC; 20 steel carburizing depth 0.8 ~ 1.2mm, 58 ~ 64HRC Another supply of tungsten alloy steel tungsten carbide steel drill sleeve jacket sleeve tungsten alloy tungsten steel drill steel bushings provide custom processing all types of tungsten steel drill sleeve, fixed drill sets, interchangeable drilling units, alloy drill sleeve, tungsten steel drill sleeve, adjustable sets, Morse taper drill sleeve sets and other processing