Aluminium
Light, fast to cut and easy to anodize — the default choice for housings, brackets and heat sinks.
6061 · 7075 · 2024 · 5083
Milled & turned · anodized Type II / III
About JOYBUY
We turn 20+ metals and plastics into precision parts through 12 in-house processes — brackets, housings, shafts and manifolds for automotive, aerospace, medical, robotics and semiconductor customers.
We turn 20+ metals and plastics into precision parts through 12 in-house processes — brackets, housings, shafts and manifolds for automotive, aerospace, medical, robotics and semiconductor customers.
15+Years in CNC machining
Who We Are
Fifteen Years of Cutting Metal — Not Corners
JOYBUY is a contract manufacturer specialising in precision CNC machining, sheet metal and surface finishing. We run our own workshop in XXX City with 63 CNC machines, a metrology room and a dedicated engineering team — so the drawing you send is the part you receive.
Most of our customers are engineers and sourcing managers in automotive, aerospace, medical, electronics and robotics. They come to us for the awkward parts: tight tolerances, thin walls, hard alloys, awkward geometries — and for the awkward quantities, from one-off prototypes to 100,000-piece runs.
- Engineering review (DFM) on every RFQ — we flag cost drivers before you commit
- NDA signed before we open your drawings; no sub-contracting without your approval
- One project engineer per order, speaking English, German or Chinese
- In-process photos, inspection reports and lot traceability with every shipment
15+
Years in business
63
CNC machines in house
±0.005 mm
Repeatable tolerance
60+
Countries shipped to
98.6%
On-time delivery
01 — Materials We Machine
20+ Metals and Plastics, Off the Shelf
Common grades are in stock so prototypes do not wait for material — 2,000+ sizes of bar, plate and tube, with EN 10204 3.1 mill certificates and lot-by-lot heat numbers.
Stainless Steel
Corrosion resistance for food, medical and marine parts: 303 for cutting speed, 316L for chemistry.
303 · 304 · 316L · 17-4PH · 15-5PH
Turned & milled · passivated
Carbon & Alloy Steel
Cheap, strong and heat-treatable — structural brackets, shafts, gears and wear parts.
1045 · 4140 · 1215 · D2 / H13 tool steel
Turned & ground · hardened
Copper, Brass & Bronze
Conductivity and bearing qualities: busbars, contacts, bushings and valve parts.
H62 · C110 · C932 bronze · BeCu
Milled & turned · tinned / nickel plated
Titanium & Nickel Alloys
For chemical, aerospace and medical duty where weight, heat and corrosion decide the drawing.
Ti-6Al-4V · Inconel 718 · Duplex 2205
5-axis milled · slow feeds, carbide tooling
Engineering Plastics
Insulating, food-safe or chemically inert parts that never see a coolant.
POM · PEEK · PTFE · PA6 / PA66 · PMMA · PPSU
Milled & turned · annealed
20+ surface finishes — anodizing, powder coating, plating, passivation, bead blasting, laser engraving and more. See all finishes
02 — Processes In House
How We Make Them
Twelve processes under one roof. Nothing is sub-contracted, so your part is never lost between suppliers — and the tolerance on the drawing is the tolerance we hold.
1200 × 800 × 500 mm · ±0.01 mm · Ra 0.8 µm
800 × 600 × 500 mm · ±0.005 mm · one chuck
Ø3–200 mm · ±0.005 mm · bar & chuck work
Ø2–20 mm · ±0.005 mm · 24 h bar feed
0.2 mm wire · Ra 0.4 µm · up to 60 HRC
±0.001 mm · Ra 0.1 µm · 2 µm flatness
3000 × 1500 mm · 0.5–6 mm sheet · TIG / MIG / spot
20+ finishes · laser marking · retail-ready packing
One shop, the whole route — nothing sub-contracted
- Billet & sheet stock
- Milling / turning
- Heat treatment
- Grinding & EDM
- Surface finishing
- Inspection
- Assembly & packing
Max part size
1200 × 800 × 500 mm — Larger on request — we have partners we audit ourselves
Tolerance
±0.005 mm — Down to ±0.001 mm with grinding and temperature control
Smallest feature
Ø0.5 mm hole — 0.4 mm slots, 0.3 mm wall on aluminium
Surface finish
Ra 0.4 µm — As-machined Ra 3.2 µm; polishing to mirror on request
Batch size
1 – 100,000 pcs — Prototype, pilot and serial production on the same process
Lead time
5 – 15 days — Prototypes 5–15 days, production 15–25 days, air or sea freight
03 — Parts We Produce
Parts We Make Every Day
Six families cover most of what leaves the workshop. Each card shows the material it is usually made from, the processes it goes through and the tolerance we hold.
Brackets & Mounts
Pocketed structural brackets, hinges, mounting plates and gussets machined from solid.
Al 6061 · 3-axis milled · ±0.01 mm
Housings & Enclosures
Sealed instrument and electronics housings with mating faces, O-ring grooves and threads.
Al 7075 · milled + anodized · Ra 0.8 µm
Shafts & Bushings
Turned and ground shafts, sleeves and press-fit bushings with keyways and circlip grooves.
4140 / 316L · turned + ground · ±0.005 mm
Manifolds & Valve Bodies
Cross-drilled hydraulic and pneumatic bodies, pressure tested and passivated.
316L / brass · 5-axis + passivated · 0.01 mm bores
Gears, Pulleys & Adapters
Timing pulleys, robot joint adapters and bearing housings that keep repeatability after assembly.
7075 / 4140 · turned + hard anodized · 0.008 mm runout
Fixtures & Tooling
Welding jigs, test fixtures and mould inserts — the tooling that makes your production repeatable.
D2 tool steel · milled + EDM + ground · 5 µm flatness
04 — Where Our Parts Go
Industries We Serve
Each sector has its own habits — paperwork, tolerances, materials. Each tile carries the parts we ship most, plus the material and process they usually come from.
Automotive
Brackets, bushings, sensor housings, EV battery parts
Aerospace
Titanium brackets, seat fittings, ground-support tooling
Medical
Instrument housings, surgical handles, sterile packaging jigs
Electronics
Heat sinks, RF housings, connector bodies, test fixtures
Robotics & Automation
Joint adapters, end-effector plates, gripper jaws
Energy & Oil / Gas
Valve bodies, pump components, downhole hardware
Semiconductor
Vacuum chucks, gas manifolds, chamber components
Marine
Deck fittings, propeller shafts, corrosion-resistant hardware
Quality & Inspection
Measured and Documented, Not Just Claimed
Every order carries an inspection plan agreed before the first chip is cut. You get the measurements, the reports and the lot numbers — not just a box of parts.
- CMM (1.5 µm accuracy) with temperature-controlled metrology room
- Vision / profile projector, roughness tester, hardness tester
- Salt-spray and thread-gauge checks for corrosion-resistant parts
- FAI, ISIR and PPAP-level documentation (control plan, MSA, capability study)
- First-article sample sent for approval before serial production
- ISO 9001 : 2015
- ISO 13485 : 2016
- IATF 16949 : 2016
- AS9100D
Our Facility
Inside the Workshop
One workshop, one quality system, one team — machining, sheet metal, finishing and assembly are not sub-contracted, so nothing gets lost between suppliers.
- 63 CNC machines: 3-axis, 4-axis and 12 five-axis centres
- 8 Swiss-type lathes for parts down to Ø3 mm
- Wire and sinker EDM, surface and cylindrical grinding
- 3,500 m² workshop, two shifts plus weekends when you need it
- 45 engineers and machinists, average 9 years with the company
How We Work
From Drawing to Delivery in Four Steps
01
Send Us Your Design
2D / 3D files with tolerances and finish requirements. NDA on request, before we open anything.
02
Quote & DFM Analysis
Within 12 working hours: itemised quote, process route and manufacturability feedback.
03
Sample Approval
First article with inspection report, then production with in-process checks and photo updates.
04
Get Your Parts
Packing that survives the trip, DHL / FedEx / sea freight, documents ready for your customs.