从China供应商批发进口9 Buttons Maxdrill R32 57mm Thread Bits — FOB条款

This is a 57mm diameter button bit with R32 thread and 9 tungsten carbide buttons, designated as Part No. 3057R3209. The R32 thread is a standard rope thread interface used in medium to heavy duty rock drilling. The bit body is of normal design with a flat face profile, suited for drifting and tunneling applications where controlled breakage and moderate penetration rates are required.

The cutting structure uses nine inserts of tungsten carbide in spherical, ballistic, or conical geometries. Spherical buttons offers superior wear resistance and are standard for hard, abrasive rock; ballistic and conical alternatives suit softer or more fractured formations where versatility is needed. The carbide grade and braze joint integrity determine overall bit life, though the supplier does not specify carbide sub-grade or hardness values in this listing.

Typical buyers include mining contractors, tunneling specialists, quarry operators, and construction firms running hydraulic or pneumatic drill rigs with R32 shank adapters. The 57mm diameter sits within the common range for face drilling in development headings and small-scale production holes. Buyers should confirm exact button geometry, flushing hole configuration, and shank compatibility before ordering, as these affect cuttings evacuation and drilling efficiency.

Maxdrill Rock Tools operates from premises at 9F, Fuzhong International Plaza, 72 Xinhu Road, Nanming District, Guiyang, Guizhou Province, 550002, China. The company holds a harbor trust tier on this marketplace, indicating a baseline verification status rather than premium certification. Both response rate and average response time register at zero in the available data, so buyers should anticipate potential delays in communication and plan accordingly.

The listing presents itself as a product-specific offer without broader claims about manufacturing scale, ISO certification, or client portfolio. No information is provided on production capacity, in-house heat treatment, or quality management systems. Buyers seeking assurance on consistency of supply, after-sales support, or technical collaboration should request direct documentation from the supplier rather than relying on profile metadata.