Why Choose Zhonghuan for a Premium SDS Alternative?
Zhonghuan is a factory-direct SDS-Plus and SDS-Max drill bit manufacturer in Yueqing, with manufacturing experience since 2008. We build premium alternatives for distributors, importers and tool brands that want professional concrete-drilling performance under their own label: confident starts, stable holes, effective dust removal and durable carbide heads matched to the job.
Our value is the combination of product construction and OEM execution. We offer self-centering two-cutters, reinforced-concrete four-cutters and one-piece full-carbide heads, backed by steel-body machining, controlled joining, heat treatment and batch inspection. Direct technical communication turns a target application or reference model into a clear production specification.
- A genuine head-construction ladder: select a precise two-cutter for everyday concrete, a four-cutter for professional reinforced-concrete work, or a full-carbide head for demanding reinforcement encounters.
- Carbide and steel selected together: YG8C / YG11C options and heat-treated 40Cr / 42CrMo bodies are matched by series and duty, rather than chosen from a grade label alone.
- Manufacturing that supports repeat orders: machined shanks and flutes, controlled-atmosphere mesh-belt brazing for the relevant insert heads, and the specified head-to-steel joining route for full-carbide models.
- Brand-ready OEM delivery: coordinate the size ladder, model markings, operating guidance, protective packaging and carton labels as one supply programme.
The Engineering Points That Define a Professional SDS Bit
A professional SDS bit is a system. The cutting head, carbide, body, flute and shank have to work together on the customer’s machine. These are the fields we use to turn a premium positioning into a purchasable specification.
| Selection field | Why it matters | What we match |
|---|---|---|
| Concrete, aggregate and reinforcement | The hardest material and steel contact set the wear and impact demands | Plain concrete, abrasive aggregate, reinforcement frequency and hole task |
| Machine and interface | SDS-Plus and SDS-Max are different holders and machine classes | Hammer model, rated diameter capacity, operating mode and working reach |
| Failure to solve | Walking, snagging, edge wear and dust packing need different design responses | Centering, stable tracking, carbide support, flute clearance and gauge retention |
| Head architecture | Two / three / four / six edges describe arrangement; one-piece and multi-insert describe construction | The exact carbide drawing, insert count and finished head |
| Carbide and joining | Hardness, toughness and the joint must suit the impact and heat cycle | Grade by SKU; insert brazing or the selected full-head joining process |
| Steel body and flute | Toughness and dust evacuation support stable drilling in deep holes | Body steel, heat treatment, core section, flute and straightness |
| Diameter and lengths | Finished-hole control and useful reach are separate from total length | Nominal diameter, working length, overall length and approved acceptance fields |
Our Product Families: Choose the Head for the Job
Start with the head that fits the hole. The first four options below build the SDS-Plus assortment; ZHMAX-7 and ZHMAX-168 extend the same OEM relationship into heavier SDS-Max jobs.
I7 Self-Centering 2-Cutter Geometry
A pointed centering feature, reinforced impact zone and deep flute geometry for controlled starts and fast everyday concrete drilling. The image is our carbide geometry reference.
- Self-centering two-cutter geometry
- Concrete, brick and masonry duties
- SDS-Plus / SDS-Max configuration by model
4-Cutter 5X SDS-Plus
A brazed carbide cross head and four-flute body for stable hole tracking, efficient dust removal and reinforced-concrete fixing work.
- Ø5–25 mm; overall length 110–600 mm
- Controlled-atmosphere brazed carbide cross
- Professional anchor-hole and OEM distributor programmes
3-Cutter Full-Carbide SDS-Plus
A one-piece three-edge carbide head combines centering and supported cutting edges for demanding concrete and reinforcement encounters.
- Current diameter programme Ø3–20 mm
- One-piece carbide head; steel body and SDS shank
- Match grade, joining and working length by SKU
4-Cutter Full-Carbide SDS-Plus
The higher-duty full-carbide option for customers drilling reinforced concrete repeatedly, with one carbide head joined to the steel body.
- Current diameter programme Ø4–25 mm
- One-piece four-cutter head
- Reinforcement duty and machine matched to the selected model
ZHMAX-7 Multi-Insert 4-Cutter SDS-Max
A full-width primary carbide blade and two inclined, axially set-back side inserts support penetration, stable tracking and gauge retention in heavy reinforced concrete.
- Ø16–45 mm; overall length 320–920 mm
- Three carbide components; four cutting edges
- Heavy reinforced concrete and deep structural drilling
ZHMAX-168 Three-Plate, Six-Edge SDS-Max
Three carbide plates form six cutting edges for round, stable holes in hard aggregate, reinforced concrete and rock-drilling programmes.
- Ø22–45 mm; overall length 450–920 mm
- Three plates; six active edges
- Heat-treated 42CrMo body; mesh-belt brazed head
Watch Our SDS Manufacturing Processes
Our process footage shows how the steel body and SDS connection are made. These operations support the fit, straightness and dust-clearing geometry that a premium drill-bit programme needs.
Automated SDS-Plus Shank-Groove Machining
Automatic feeding, clamping, indexing and groove machining of the SDS-Plus connection end.
SDS Drill Bit Spiral-Flute Machining
Close-up of flute machining on a large SDS body, with the formed helix and removed steel chips visible.
Explore our manufacturing processes
From a Product Specification to a Repeatable OEM Programme
For the insert-head series, we coordinate carbide geometry, prepared seating surfaces and controlled-atmosphere mesh-belt brazing. Full-carbide models use a separate one-piece head and the specified head-to-steel joining route. Edge count alone does not identify either construction.
Our ISO 9001 quality-management programme supports dimensional, hardness and runout checks by batch. The selected drawing records head geometry, carbide and body material, joining, working reach and nominal gauge, so the specification can be repeated when the customer reorders.
Packaging is part of the finished product: model identification, diameter and length markings, brand engraving, multilingual instructions and the agreed protective or retail pack. We confirm the selected model, quantity, packaging and lead time together in the quotation.
SDS OEM and wholesale programme
Use Named Brand Models as Specification References
Once the Zhonghuan programme is selected, a named brand model can sharpen the reference brief. Compare the exact diameter and construction. This is a model-matching table, rather than a brand ranking.
| Product / programme | Interface | Head construction | Application | What to carry into the OEM brief |
|---|---|---|---|---|
| Zhonghuan SDS-Plus OEM | SDS-Plus | Self-centering two-cutter, brazed four-cutter or one-piece full-carbide head by SKU | Concrete, masonry and specified reinforcement duty | Head drawing, size ladder, grade, body, joining and packaging |
| Bosch EXPERT SDS plus-7X | SDS-Plus | One-piece four-cutter full-carbide head | Reinforced concrete | Reference the selected full-carbide head and diameter |
| Hilti TE-CX | TE-C / SDS-Plus | Four-edge solid-carbide head | Anchor drilling in reinforced concrete | Finished-hole diameter, wear indication and working reach |
| Milwaukee MX4 European range | SDS-Plus | Solid-carbide tip through Ø20 mm; slotted carbide tip above Ø20 mm | Concrete with reinforcement; masonry | Exact diameter, product version and tip construction |
Named product references: Bosch EXPERT SDS plus-7X · Hilti TE-CX · Milwaukee MX4
Choose Your Starting SDS Assortment
| Customer’s work | Starting programme | Next specification |
|---|---|---|
| Plain concrete, brick and block | Premium self-centering two-cutter | Centering feature, useful reach and fast debris removal |
| Professional fixing in reinforced concrete | 5X four-cutter or the selected full-carbide model | Reinforcement exposure, finished gauge and machine |
| Frequent reinforcement encounters | Three- or four-cutter full-carbide programme | One-piece head, joint, diameter and approved drilling duty |
| Deep holes, hard aggregate or heavier drilling | Separate SDS-Max ZHMAX-7 / ZHMAX-168 programme | Hammer model, impact class, diameter and depth |
A focused distributor range can start with the contractor’s main hole sizes and one clearly defined head construction. A premium extension adds full-carbide heads or heavier SDS-Max models where the work calls for them. We coordinate the SKU matrix and packaging so the customer can identify the right tool quickly.
Hole diameter, working length and overall length are independent order fields. Reinforcement-cutting work follows the project’s approved path and the exact tool’s operating instructions.
Build a Consistent Private-Label Range
Keep the construction and operating language consistent across the bit, sleeve, catalogue and replenishment order. A four-cutter cross, a three-insert four-cutter and a one-piece full-carbide head are distinct specifications, even when each is marketed for professional concrete drilling.
For an initial quotation, send the application, diameter × working length and quantity. A hammer model, reference photo or named benchmark is useful when available. We then confirm the head, overall length, carbide/body combination, joining route, marking, packaging and delivery schedule.
Request a Zhonghuan SDS OEM quotation
Frequently Asked Questions
Why choose Zhonghuan for a premium SDS alternative?
We combine professional head constructions, carbide and steel-body engineering, controlled joining, batch inspection and direct private-label support. The selected application becomes a model-specific drawing and repeat-order programme.
Are all four-cutter bits full-carbide heads?
No. Four-cutter describes four active edges. A carbide cross, a multi-insert head and a one-piece full-carbide head have different constructions. Confirm the selected drawing and joining route.
Which grade should go on the specification?
Select the carbide grade together with concrete, aggregate, reinforcement contact and the machine. We match the grade, body steel and joining to the chosen SKU; YG8C or YG11C alone does not define the complete tool.
Can one head be used across SDS-Plus and SDS-Max?
Confirm each machine interface, diameter and working length separately. SDS-Plus and SDS-Max have different connection ends and machine capacities; a similar head appearance does not make the holders interchangeable.
Can our reinforced-concrete bits continue through steel?
Use the exact model’s reinforced-concrete application and operating instructions on a project-approved hole path. Full-carbide heads and dedicated rotation-only crown cutters use different workflows.
What documents and order terms do we confirm?
The approved drawing, SKU and size matrix, agreed inspection records, applicable quality documents, markings, packaging and shipment terms. MOQ and lead time are confirmed for the selected model and packaging programme.
What should I send to start?
Send the application, diameter × working length and quantity. A hammer model or reference product helps us match the construction. We return a coordinated SDS specification and OEM quotation.
