China Taper 7, 11, 12 Degree Hexagonal 22*108mm Taper Drill Rods, Find details about China Tapered Drill Rod, Tapered Drill Steel from Taper 7, 11, 12 Degree Hexagonal 22*108mm Taper Drill Rods
Shank Style | Length | Tapered Angle | |
Mm | foot/inch | 4 degree 7 degree 11 degree 12 degree | |
Hex19 × 108mm | 400 ~ 4,000 | 1' 4" ~ 13' 1" | |
Hex22 × 108mm | 400 ~ 9,600 | 1' 4" ~ 31' 6" | |
Hex25 × 108mm | 600 ~ 6,400 | 1' 11 5/8" ~ 21' | |
Hex25 ×159mm | 800 ~ 6,400 | 2' 7" ~ 21' |