CNC machining in China — tolerances held, evidence supplied
P&A International delivers CNC machined parts — milled, turned and mill-turned, in metals and engineering plastics — through vetted partner machine shops in China, every supplier ISO 9000 certified or better. One dedicated engineer reviews your drawing, places the work on the right machine class, and signs off the CMM report before parts ship.
Machining buys fail on tolerance interpretation and silent material substitution. Your engineer locks the datum scheme and material certification up front, so the argument never has to happen.
consultancy + manufacture
per project, end-to-end
qualified samples with test data
every supplier certified or better
first articles measured, documented
CNC machining services
CNC milling
3-, 4- and 5-axis milling of housings, manifolds, fixtures and structural parts to tight tolerance.
Turning & mill-turn
Shafts, bushings, fittings and turned housings — live tooling closes milled features in one setup.
Machining castings
Datum-driven machining of die castings and extrusions — sealing faces, bores and threads to drawing.
Plastics machining
POM, PC, nylon and PEEK machined for prototypes and low-volume production parts.
One-off prototypes ship in 10-15 days with measurement data; the same drawings carry into batch production.
Engineering capability
- 3-, 4- and 5-axis vertical and horizontal milling centres across the partner network
- CNC turning to 800 mm swing; mill-turn with live tooling
- Materials: aluminium alloys, steels and stainless, brass, copper, titanium, engineering plastics
- Tolerances to IT7 on critical features; surface finishes to Ra 0.4 where specified
- Wire and sinker EDM for hardened steels and sharp internal corners
- Anodise, plate, passivate, paint and laser-mark finishing routes
- First-article inspection with CMM report; PPAP-style documentation on request
- Material certificates and full traceability in every quality file
At a glance
| Axes | 3, 4 and 5-axis milling; mill-turn |
| Envelope | Milled to ~1,500 mm; turned to 800 mm swing |
| Materials | Al, steel, stainless, Ti, brass, plastics |
| Tolerance | To IT7 critical; ISO 2768-f general |
| Prototypes | 10-15 days with CMM data |
| Batches | 1 to 100,000+ parts/year |
| Documentation | FAI + CMM, material certs, finish reports |
Why engineers & buyers choose PA
For design engineers
Drawings are read by machinists-turned-engineers who query the ambiguous datum before cutting, suggest the cheaper tolerance where yours is tighter than the function needs, and return parts with measurement evidence — not just a packing slip.
For purchasing
Vetted machine shops without the vetting work: every partner ISO 9000 certified or better, itemised pricing, agreed inspection plans, and one engineer accountable for delivery — from one prototype to standing monthly batches.
3 easy steps to get started
Send your drawing
STEP plus 2D with tolerances and material. PDF-only drawings are fine for quoting.
Engineering quote
Machine-class selection, material confirmation and itemised pricing — with tolerance feedback.
Parts with proof
First articles with CMM report; production batches with agreed sampling inspection.
Applications
Typical machined work: equipment housings and manifolds, motion-control and robotics components, jigs and fixtures, valve and pump parts, optical and sensor mounts, and machined finishing of castings and extrusions — across industrial automation, energy, medical and instrumentation sectors.
Part of our precision machining services. Related: quick-turn prototypes, metal fabrication and machined die castings.
Machining from solid, or a near-net route?
Volume changes the answer — a quick orientation:
| CNC from solid | Prototypes, low volumes, tightest tolerances, fastest start |
| Casting + machining | Complex shapes from ~5k/year — die casting cuts the cycle cost |
| Extrusion + machining | Constant cross-sections — profiles cut and machined to length |
| Stamping | High-volume sheet parts — tooling pays back fast at volume |
What to send us for a fast, accurate quote
The more of this you can share, the quicker we can return a proposed machining plan and price:
- STEP/IGES model and 2D drawing with datums and tolerances
- Material grade and any certification requirements
- Surface finish and treatment callouts
- Quantities: prototype, batch, annual
- Critical-to-function dimensions for the inspection plan
Tolerance tighter than the function needs costs money every batch — ask your engineer where it can relax.
Get a quote
Send your machined part and one dedicated engineer will reply with machine-class selection, tolerance feedback and itemised pricing.
One dedicated engineer reviews every enquiry and replies with a proposed machining plan and indicative pricing. Your details are used only to respond to your enquiry. Prefer email? support@pa-international.com.au