4-Petal 3- Flute Tungsten Carbide Alloy Spiral Reaming Drill Bit

4-Petal 3-Flute Tungsten Carbide Spiral Reaming Bit for BOF Taphole Maintenance Function: Ream, reshape & clean converter taphole, remove skull, sintered slag and waste refractory before taphole sleeve brick replacement. Advantages:

✅ 4-petal design for stable centering, good roundness of taphole

✅ 3 wide spiral flutes for smooth slag evacuation, anti-jamming

✅ Tungsten carbide buttons: high heat & impact resistance, long service life

✅ Low vibration, protect taphole reamer machine

✅ Fits most hydraulic taphole drilling machines Ideal for steel plant shutdown, refractory contractor & converter maintenance service