Who Zhonghuan Is — Manufacturer Verification
Zhonghuan Tools is a vertically integrated TCT-tipped chisel manufacturer. The factory runs the full production sequence in-house: body-steel cutting and heat treatment, carbide tooth procurement and brazing, CNC face geometry grinding, dimensional QC, and packaging. TCT chisels and TCT core bits share production lines at the brazing furnace stage — same equipment, same atmosphere control, same carbide supply chain — which is why a single supplier audit verifies both categories.
For procurement teams running supplier verification before a first order:
- Factory video tour — walk-through of the brazing line (controlled-atmosphere mesh-belt and induction furnaces), heat treatment, CNC grinding, QC inspection, packaging.
- Third-party audit — SGS, Bureau Veritas, or TÜV factory audit reports available.
- Material certificates and process documentation — provided per production lot from sample onward.
- Destructive cross-section sample — verifies controlled-atmosphere brazing joint integrity at the carbide-to-body interface on first production lot.
Product Range — Tooth Configurations by Application
Zhonghuan supplies the full TCT chisel range matched to application substrate and channel:
| Tooth Config | Face Width | Primary Use | Volume Tier |
|---|---|---|---|
| 4-tooth | 25 mm (narrow) | Tight mortar joint raking | High |
| 4-tooth | 32 mm (standard) | Standard mortar joint raking — brick repointing volume product | Very high |
| 6-tooth | 40 mm | Surface scaling, tile removal, wider mortar work | High |
| 8-tooth | 50 mm | Heavy adhesive removal, coating stripping, plaster removal | Medium |
| 12-tooth (specialty) | 75 mm+ | Very wide surface scaling, large-area scaling | Specialty |
All configurations available on SDS-Plus shank (handheld lighter duty, paired with Bosch GBH 2-26 class rotary hammers) and SDS-Max shank (sustained heavy duty, paired with Bosch GBH 8-45 / 11-26 class rigs). Lengths: 200 / 250 / 280 / 300 mm standard, up to 400 mm custom for deep wall reach. Tooth pitch is 6–8 mm center-to-center per the impact-load and chip-clearance physics documented in our technical comparison article.
Engineering Specifications — Spec Lock
The spec lock that Zhonghuan documents per production lot, carrying across repeat orders:
| Spec Area | Zhonghuan Standard |
|---|---|
| Carbide grade | YG8C standard / YG11C premium — cobalt-rich (8–11%), coarse-grain, impact-optimized — material certificate per lot |
| Brazing process | Continuous controlled-atmosphere mesh-belt furnace brazing for volume production, or nitrogen-shielded high-frequency induction brazing for selected standard professional programs. Process documentation per lot. |
| Body steel | 40Cr (SDS-Plus, lighter duty) or 42CrMo4 (SDS-Max, heavy duty), heat-treated 45–50 HRC body, harder shank end — mill certificate per lot |
| Shank tolerance | SDS-Plus and SDS-Max fit checked against the approved shank drawing and gauges |
| Tooth pitch | 6–8 mm center-to-center; balances per-tooth impact load against chip clearance |
| Joint verification | Destructive cross-section sample on first production lot; visual joint inspection on every piece (no oxidation marks, full carbide wetting) |
Benchmark Against Branded Suppliers
Procurement teams evaluating Zhonghuan against branded TCT chisels typically send a spec-matched RFQ. The benchmark structure:
- Bosch SDS-Plus TCT Mortar Chisel (32 mm 4-tooth, 200 mm length, controlled-atmosphere brazed) → Zhonghuan match: YG8C carbide, controlled-atmosphere brazing, 40Cr body steel, same tooth count and pitch, same length range.
- Milwaukee SLEDGE SDS-Plus Mortar / Jointing Chisel (e.g., 4932472030) → similar engineering match. Same impact-grade carbide and brazed-tooth construction.
- DeWalt SDS-Plus TCT chisel range → matched on shank, carbide tier, and brazing process. Same trade-channel positioning achievable.
- Marshalltown SDS-Plus Brick Removal / Masonry Chisel (32 mm 4-tooth carbide-tipped flat blade) → direct geometric and material match — same tooth count, face width, and impact-grade carbide.
- Diager TCT chisel line → matched on shank standard, carbide grade, brazing process, and body steel.
- Diablo SDS-Max Flat Chisel (heavy duty) → matched on SDS-Max heavy-duty body construction and carbide tooth specification.
Same engineering envelope, different commercial structure. The branded margin pays for distribution, retail shelf placement, warranty network; the OEM channel routes that margin into category-manager or distributor budget.
OEM Program Structure
| Stage | Deliverable | Timeline |
|---|---|---|
| 1. Benchmark selection | Buyer specifies brand reference, tooth configuration, dimensions, target substrate | Week 1 |
| 2. Spec lock | Engineering spec sheet — carbide, brazing, body steel, tooth count, face width, length | Week 1–2 |
| 3. Sample chiseling test | Witness test in target substrate (mortar / tile / scaling) with carbide wear measurement | Week 2–4 |
| 4. Joint verification | Destructive cross-section sample on representative bit — verify controlled-atmosphere braze joint integrity | Week 2–4 |
| 5. Packaging proof | Printed sample of color box / blister / plastic case before bulk | Week 3–4 |
| 6. First production lot | Material certificates, brazing process docs, body steel mill cert, dimensional inspection | Week 5–9 |
| 7. Repeat orders | Same locked spec; per-lot QC documentation continues | 25–35 days per order |
RFQ Checklist
- Target market and channel positioning (EU / NA / GCC / Asia trade retail, contractor supply, rental fleet, masonry specialist supply)
- Primary application — mortar raking / tile removal / surface scaling / adhesive removal (drives tooth configuration choice)
- Shank ecosystem — SDS-Plus / SDS-Max / mixed program
- Tooth configuration mix — 4-tooth 25 mm / 4-tooth 32 mm / 6-tooth 40 mm / 8-tooth 50 mm, projected annual volume per SKU
- Length range — 200 / 250 / 280 / 300 mm standard, custom up to 400 mm
- Benchmark brand reference — Bosch / Milwaukee / DeWalt / Marshalltown / Diager / Diablo
- Carbide grade preference — YG8C standard / YG11C premium impact-grade
- Packaging format and custom artwork — color box, blister, plastic case, industrial bulk
- Marking format — laser etch, printed label, pad print
- Documentation — material certificate, brazing process documentation, body steel mill certificate, destructive cross-section sample, third-party audit
- Multi-chisel co-pack — point + flat + TCT mortar chisel kit assemblies
- Sample order quantity and lead time
Start an OEM TCT-Tipped Chisel Program with Zhonghuan
Send target market, primary application (mortar / tile / surface), tooth configuration mix, annual volume, packaging format, and benchmark brand. Zhonghuan responds with a spec lock, sample chiseling test plan, joint verification, packaging proof, and full quotation for the complete TCT chisel catalogue.
Request TCT Chisel Manufacturer Quote