China Alloy Steel Single Tube System BTA Drill Diameter 120 mm BTA Drill Head, Find details about China Single Tube BTA, BTA Drill from China Alloy Steel Single Tube System BTA Drill Diameter 120 mm BTA Drill Head
Specification:
Bit specification bit specification | drill tube size | Bit specification bit specification | drill tube size |
17.8-19.5 | 16 | 43 45 47 | 40 |
19.51-21.99 | 17.5 | 48 50 52 | 43 |
22-24.99 | 20 | 55 | 48 |
25-26.99 | 23 | 57 58 60 | 52 |
27-29.99 | 25 | 62 63 65 | 56 |
30-31.99 | 27 | 68 70 72 | 61 |
34.5-35 | 30 | 75 | 65 |
38-42 | 35 | 80 | 70 |