CONCRETE TOOLING
SDS-Plus and SDS-Max drill bits, chisels and TCT core bits form the core—extended with diamond coring, concrete saw blades and surface-preparation tools for one coordinated OEM program.
SDS & CORE DRILLING RANGE
SDS-Plus Professional Series
Solid carbide head resistance-butt-welded to a steel body. One-piece sintered WC-Co, CNC-ground — 3–7× the carbide volume at the cutting zone vs brazed-tip bits. Same process tier as Bosch EXPERT, Hilti TE-CX, Milwaukee MX4.
TECHNICAL SPECIFICATIONS
SDS-Max Heavy-Duty Series
3-block / 6-edge head — three controlled-atmosphere belt-furnace-brazed YG11C carbide blocks around a centering point, with an approved copper-bronze brazing-finish option. Built for blast-hole drilling, reinforced concrete and large-diameter anchor work.
TECHNICAL SPECIFICATIONS
TCT-Tipped Hammer Chisels
Tungsten carbide-tipped SDS-Plus chisels with 4 / 6 / 8 controlled-atmosphere belt-furnace-brazed teeth for mortar raking, tile removal and surface scaling. YG8C / YG11C carbide on a hardened 40Cr body.
TECHNICAL SPECIFICATIONS
PRIMARY DRILLING SYSTEMS
Start with SDS-Plus or SDS-Max, then extend the same sourcing program with TCT core bits, diamond core drills and application-matched support tools.
SDS-Plus Series
Professional rotary hammer drill bits for concrete and masonry. Complete range Ø5-26mm.
Quality Assurance
In-House Metallurgical QC
Every batch is inspected for hardness, dimensions, and braze-joint integrity — with cross-section and shear/pull tests on the carbide joint.
CE Certification
All products comply with European safety and environmental standards
Quality Testing
Every batch undergoes rigorous testing for hardness, wear resistance, and structural integrity
At Zhonghuan Tools, quality is not just a priority—it's our foundation. Our commitment to excellence ensures reliable performance of every tool in the most demanding applications.
Questions Serious Buyers Ask First
Procurement-ready answers for serious buyers.
Lead time, certifications, MOQ, OEM, material reports, Incoterms — share the full RFQ context, and we quote on comparable supply conditions, not isolated unit-price screenshots.
Precision Engineering Since 2008
Since 2008, Zhonghuan Tools has specialized in SDS drill bit manufacturing in Yueqing, delivering professional concrete-drilling programs for global distributors and OEM brands.
Backed by a mature manufacturing system and a specialized technical team, we have served customers in 60+ countries with 500+ product models, delivering consistent quality and reliable lead times for global OEMs and distributors.
Our commitment to quality is unwavering. Every product undergoes rigorous testing to ensure it meets the highest standards of performance and durability in real-world applications.
Competitive Advantages
Documented Batch QC
Trust and reliability for B2B customers
24-Hour Quote Response
Fast market response for urgent projects
Seamless English & Chinese Service
Better communication and understanding
OEM/ODM Specialization
Higher profit margins and customer loyalty
Advanced Manufacturing
Professional manufacturing system with advanced processing and full-process quality control
Advanced Manufacturing Capabilities
Advanced production equipment and full-process quality control ensure consistent output quality and reliable lead times.
4 Controls in the Continuous Furnace-Brazed Insert Program
Body & Head Preparation
40Cr or 42CrMo bodies and YG8C/YG11C carbide inserts are cleaned, seated and fixtured to the approved drawing before furnace loading.
Controlled-Atmosphere Belt-Furnace Brazing
A continuous conveyor and multi-zone temperature control keep heating, filler flow and cooling repeatable across the batch while the controlled atmosphere limits oxidation.
Copper-Bronze Joint Appearance
With the approved copper-bearing brazing alloy and finishing route, we can release a clean copper-bronze head and joint appearance; it is a brazing-finish option, not a copper carbide grade.
Joint Inspection & Batch Release
Head position, braze flow, visible gaps, alignment and finished appearance are checked against the approved sample before packaging.
CNC Machining Centers
CNC lathes and machining centers turn and prepare the alloy-steel bodies and shanks to ±0.05mm tolerance, so every bit starts dimensionally consistent before brazing and heat treatment.
Continuous Controlled-Atmosphere Belt-Furnace Brazing
The continuous conveyor carries fixtured bodies through a controlled atmosphere and multi-zone thermal profile. This stabilizes heating, brazing-alloy flow and cooling from one batch to the next, while supporting the approved copper-bronze joint appearance.
Heat Treatment Furnaces
Computer-controlled furnaces run a staged profile: the carbide tip stays hard while the alloy-steel body and shank are tempered for toughness — deliberately softer than the tip so the shank survives repeated hammer impact instead of shattering.
Precision Grinders
Professional CNC grinders with diamond wheels precision-grind spiral flutes for optimal chip evacuation and consistent drilling performance across every batch.
Quality Inspection Lab
Our lab checks hardness (HRA/HRC), dimensions, and braze-joint cross-sections on every batch, plus shear/pull tests on the carbide joint. First-pass rate runs 98.5%, documented in our ISO 9001 records.
Smart Packaging Lines
Packaging lines run blister, clamshell, and tube formats with buyer private-label branding. QR/batch tracking gives full traceability from raw bar to carton — supporting OEM partners worldwide.
Request an SDS or Core Bit Quote
Send the SDS shank or core-bit system, size range, substrate, quantity and packaging target. Our team will turn it into a quote-ready specification.