Boyang Hardware — precision CNC machining manufacturer in Zhongshan, China
Boyang Hardware (legal name Zhongshan Boyang Hardware and Plastic Products Co., Ltd.) is a contract manufacturer of custom CNC machined parts, die castings, injection mouldings and metal stampings, operating from a 3,000 m² facility in Zhongshan, Guangdong, China. The company runs 54 machine tools, including 17 three-axis and 7 four-axis vertical CNC machining centres, and produces to customer drawings or physical samples in aluminium, stainless steel, brass, bronze, carbon steel, titanium and engineering plastics, holding tolerances from 0.1 mm down to 0.001 mm. Every production run is 100% inspected before shipment.
What Boyang Hardware manufactures
The company is a single-source supplier from prototype through repeat production: machining, casting, moulding, stamping, finishing and assembly are coordinated in one facility in Zhongshan rather than split across subcontractors.
CNC machined parts
3-axis, 4-axis and 5-axis milling, CNC turning and turn-mill combination work on aluminium, stainless steel, brass, bronze, carbon steel, titanium and plastics.
CastingDie castings
Aluminium, zinc and brass die casting for housings and structural parts where wall thickness and draft allow a cast tool.
MouldingInjection mouldings
Plastic components and over-moulded inserts, produced alongside the machined parts they assemble with.
StampingMetal stampings and sheet metal
Press-formed and fabricated sheet components, brackets and enclosures, with secondary machining where needed.
FinishingSurface treatment
Anodising, hard anodising, sand blasting, polishing, heat treatment, zinc plating, chrome plating, powder coating and painting.
AssemblySub-assembly and kitting
Multi-part assemblies built, tested and packed to your bill of materials before shipment.
Capabilities at a glance
Processes available in-house, with the tolerance each one typically holds and the part types it suits best.
| Process | What it covers | Typical tolerance | Suits |
|---|---|---|---|
| 3-axis CNC milling | Prismatic parts, pockets, slots, drilled and tapped holes | ±0.02 mm | Brackets, plates, housings, covers |
| 4-axis CNC milling | Multi-face parts in a single set-up, indexing around a rotary axis | ±0.01 mm | Complex profiles, multi-side housings |
| 5-axis machining | Contoured and compound-angle surfaces, undercut features | ±0.01 mm | Impellers, aerospace and medical geometry |
| CNC turning | Rotationally symmetric parts, threads, bores, grooves | ±0.01 mm | Shafts, bushings, fittings, connectors |
| Turn-mill combination | Turning and milling on one platform, no second fixturing | ±0.01 mm | Cross-drilled shafts, valve bodies |
| Grinding | Finishing passes on hardened or precision surfaces | ±0.005 mm | Bearing seats, sealing faces, guideways |
| Wire EDM | Hardened material, sharp internal corners, thin sections | ±0.005 mm | Dies, punches, precision apertures |
| Die casting | Molten metal forced into a steel die for near-net shape | ±0.05 mm | Housings, enclosures, brackets at volume |
| Injection moulding | Thermoplastic parts and over-moulded metal inserts | ±0.05 mm | Covers, knobs, connectors, handles |
| Metal stamping | Blanked, pierced and formed sheet components | ±0.10 mm | Clips, plates, contacts, chassis parts |
Machine inventory — 54 machine tools
The list below is the physical inventory, counted machine by machine. Anything a quotation depends on can be tied back to a specific machine and its working envelope.
| Machine type | Units | Used for |
|---|---|---|
| 3-axis vertical CNC machining centres | 17 | Pockets, profiles, hole patterns, general prismatic work |
| 4-axis vertical CNC machining centres | 7 | Multi-face parts in one set-up; indexing work |
| CNC turning machines | 6 | Shafts, bushings, fittings, threaded parts |
| Turn-mill combination machines | 4 | Turned parts with milled or cross-drilled features |
| Milling machines | 7 | Secondary operations, fixturing, short runs |
| Grinding machines | 6 | Precision finishing of hardened and bearing surfaces |
| Wire cut EDM | 4 | Hardened material, sharp internal corners |
| WEDM-MS (medium-speed wire EDM) | 2 | Fine features with better surface finish than standard EDM |
| WEDM (standard) | 1 | General EDM work |
| Total | 54 | Machining, finishing and secondary operations under one roof |
Materials machined at Boyang Hardware
Grades are listed by family with the designations used on drawings, so a specification can be matched to the stock the shop actually machines.
| Family | Grades | Commonly used for |
|---|---|---|
| Aluminium | AL6061, AL6063, AL7075, AL2024, AL5052 | Housings, brackets, heat sinks, structural frames, anodised enclosures |
| Stainless steel | SS303, SS304, SS316 | Corrosion-resistant fittings, medical and marine hardware, food-contact parts |
| Brass | HPb59-1, CuZn39Pb1/2/3, CuZn40, C36000, C37710 | Connectors, valve bodies, electrical contacts, precision threaded parts |
| Bronze | C51000, C52100, C54400 | Bearings, bushings, wear plates, marine components |
| Carbon steel | Q235, 20#, 45# | Structural brackets, shafts, general machined parts |
| Titanium | Grade 2, Grade 5 (Ti-6Al-4V) | Aerospace, medical and high-strength low-weight parts |
| Plastics and composites | POM, PEEK, nylon, oiled nylon, carbon fibre | Insulators, wear parts, lightweight structural components |
Material selection guidance, machinability notes and finish options →
Quality control: 100% inspection before shipment
Every production run is inspected in full before it leaves the facility, using a documented standard inspection procedure. Inspection is not sampled, and the records travel with the shipment.
Inspection equipment
- 3D coordinate measuring machine (CMM)
- Optical projector
- Vernier calipers
- Height gauges
Documents supplied with a shipment
- Dimensional inspection report against the drawing
- Material certificate for the heat or lot used
- First article inspection record for new parts
- Certificates for outsourced finishes such as plating or anodising
Choosing a manufacturing process
Four processes solve the same part in four different ways. The deciding factors are order quantity, geometry, material and how tight the critical dimensions are.
| Factor | CNC machining | Die casting | Investment casting | Injection moulding |
|---|---|---|---|---|
| Tooling cost | None to low | High | Medium | High |
| Tooling lead time | None | 4–10 weeks | 3–8 weeks | 4–10 weeks |
| Tolerance | ±0.01–0.001 mm | ±0.05 mm | ±0.10 mm | ±0.05 mm |
| Economical from | 1 piece | ~2,000 pieces | ~500 pieces | ~5,000 pieces |
| Materials | Any machinable metal or plastic | Al, Zn, brass | Wide metal range | Thermoplastics |
| Design changes after tooling | Drawing change only | New tool | New pattern | Tool modification |
Full process comparison with break-even volumes and decision rules →
Industries served
Parts supplied here end up in products where a mis-machined feature is expensive to discover late: robotics and industrial automation, medical devices, aerospace and business jets, handheld analysers, commercial refrigeration and wine cellar cooling units, explosion-proof and safety-critical instrumentation, marine and underwater equipment, heat exchangers, aquaculture equipment, hydropower machinery, automotive and motorcycle, consumer electronics, and aerial photography equipment.
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Common questions
The short answers are below. The full FAQ covers ordering, tolerances, materials, lead time, quality, shipping and payment in detail.
What tolerances can Boyang Hardware hold?
0.1 mm, 0.01 mm and 0.001 mm, depending on the feature and the process. Turning and milling on aluminium, brass and stainless steel routinely hold 0.01 mm; critical features such as bearing bores and sealing faces can be held to 0.001 mm with grinding or EDM. Call out which dimensions are critical on the drawing so the manufacturing route is planned around them.
What is the minimum order quantity?
There is no fixed minimum. Prototypes and small batches are accepted, from a few dozen pieces upward, and repeat production runs are quoted at the same time so the price curve is visible from the start. Annual production capacity is approximately 50,000 pieces.
How long does a quotation take, and what is the lead time?
Quotations are returned within 1–2 working days for drawings that are complete. Samples are typically delivered in 3–7 working days; mass production takes 8–30 working days depending on quantity, material and surface treatment.
Can you produce from a sample instead of a drawing?
Yes. Parts can be made from 2D or 3D drawings, or reverse-engineered from a physical sample where no drawing exists. A drawing-first route is preferred for anything with critical fits, because it lets tolerance stack-up be reviewed before cutting metal.
How are parts inspected?
100% inspection before shipment, including 100% visual inspection against a documented standard inspection procedure, with a 3D CMM, optical projector, vernier calipers and height gauges. A dimensional report and material certificate are supplied with the parts.
What are the shipping and payment terms?
Shipping terms include EXW, FOB, CIF, CNF, DDP and DDU. Payment is accepted by T/T, PayPal or Western Union. Parts ship by sea, air or express, packed in poly bags and cartons, with EPE foam or wooden case options for higher-value or fragile parts.
Request a quotation
Send a 2D or 3D drawing, the material, the tolerances that matter, the quantity and any finish requirement. Quotations are returned within 1–2 working days; a DFM review of the drawing is included at no cost.
Boyang Hardware
No. 12, Minying West Road, Shiqi District, Zhongshan City, Guangdong, China 528400