Product Description
This high-pressure DTH bit is source-listed at 158 mm and in a six-inch class for water-well and mine construction. The metric gauge converts to about 6.22 inches, so the two source values are close but not identical and must be reconciled against the required hole. Use the water well drilling application archive and the abrasive formation archive to frame selection. The bit is not suitable for unsupported alluvium merely because it is large.
The source names a high-pressure DTH structure and “King Kong” product wording but does not identify a standard hammer shank. This record uses a 158 mm alloy-steel DTH body with fixed carbide buttons and treats six inch as a class descriptor. Button count, face profile, spline system, retaining hardware, valve arrangement, and air ports are unverified. A drawing or physical gauge must establish whether the required bore is exactly 158 mm or a nominal six-inch size and which hammer connection is provided.
Operate within 1,000–3,000 lbf/in of diameter and 25–60 RPM, using only hammer-approved pressure and delivered air. The general DTH reference spans 0.7–2.4 MPa, but “high pressure” does not define a setting. Hard and abrasive rock are suitable; fractured zones require cautious loading. Measure the delivered bit before finalizing casing clearance or expected hole volume. Flow is blank because compressor volume, depth losses, and port area are unknown. The explicit limitation is the 158 mm versus six-inch naming difference and absent shank. Water-well resources are available from the National Ground Water Association.