F4 series IADC 422

Features: Distinguished by long and sharp inserts, in conical and chisel shapes. Large sized inserts made of tough carbide grades. Offset cone layout for better penetration rates.

Application: Cutting structure designed for fast drilling in soft and unconsolidated formations like shale, fractured sand stone and lime stone.

Compressive strength: Upto 75 Mpa

Recommended operating parameters:
1000-3500 lbs / inch of bit diameter.
80 - 120 rpm