Import 8tct Core Drill Bits Set — Buy in wholesale FOB from Supplier in China

The 8TCT core drill bits set from Yueqing Fangzheng Tools Co., Ltd comprises multiple diameter tungsten-carbide-tipped (TCT) hollow bits engineered for dry or wet rotary drilling in concrete, brick, and masonry substrates. Each bit features a tungsten carbide cutting edge brazed to a steel body, a geometry that removes a cylindrical core while leaving the surrounding material intact. The set covers several common hole sizes, allowing contractors to switch between plumbing, electrical, and HVAC penetration diameters without changing tool families.

Tungsten carbide tips in this product class typically use a cobalt binder matrix with grain size between 0.5 and 2.5 microns, balancing hardness (HV 1300-1600) and fracture toughness for impact resistance against aggregate. The flute design is intended to clear dust or slurry efficiently, reducing frictional heat that would otherwise anneal the carbide and soften the steel body. Shank configuration fits standard rotary drill chuck specifications, though exact shank type and maximum rpm rating are not stated in the source and should be confirmed with the Wenzhou-area supplier.

These bits are bought by general contractors, M&E installers, and rental yards who need reliable penetration rates across abrasive mineral-based materials. The set format reduces per-bit cost and ensures matched wear characteristics across diameters. Buyers should ask Yueqing Fangzheng Tools whether the set includes pilot drills, arbor adapters, or ejector pins, and whether the carbide grade is specified for reinforced concrete with steel rebar. Packaging must protect cutting edges from impact during ocean freight from Zhejiang ports.

Yueqing Fangzheng Tools Co., Ltd is located at Fangjiangyu, Qingjiang Town, Yueqing, Zhejiang Province, China, placing it within the Wenzhou region's dense cluster of hardware and cutting-tool manufacturers. The supplier carries a harbour trust tier with no recorded response rate or response-time data, indicating that buyers must initiate independent verification of manufacturing capability and export licensing. No year of establishment, employee count, revenue figure, or client list is provided in the source.

The source description positions the company as a producer of TCT core drill bits for professional and serious DIY users, with emphasis on wholesale and bulk supply. It references ISO certification, though no specific standard number or scope is given, and claims robust packaging with FOB or CIF shipping terms. Buyers should request the current ISO 9001 certificate, factory inspection reports, and sample bits for bench testing before committing to volume orders. Direct communication with the Qingjiang Town office is essential to clarify actual production capacity and quality-control protocols.