We are a China-based machining workshop built around drawings, tolerances and reliable lead times. As a custom CNC milling service in China, we turn solid bar stock, forgings and castings into finished, ready-to-assemble components for engineers, product brands and equipment makers across Europe, North America, Russia, South Asia and the Middle East. Send a STEP, IGES, X_T, DWG or PDF drawing and we machine the part exactly the way it is dimensioned — milled, turned, drilled, tapped, ground and finished under one roof.
Our 3-axis, 4-axis and 5-axis milling centers cut prismatic blocks, valve bodies, mounting plates, housings, brackets and complex curved surfaces from steel, stainless steel, aluminum, brass, titanium and engineering plastics. Pockets, stepped bores, threaded holes and sealing surfaces are programmed from your 3D model and verified against the 2D drawing before shipment.
Many custom parts need both operations: a turned outside diameter with milled flats, cross holes, internal threads or an internal groove. We combine CNC turning and milling in a single production flow so mixed geometry parts arrive as one finished component, with one inspection report and one delivery schedule instead of split batches from separate suppliers.
Material is selected from the grade called out on your drawing, with heat numbers recorded for steel and stainless steel heats. The eight groups below cover the majority of stock cut every day by our custom CNC milling service in China.
304, 316 and 316L for corrosion-exposed housings, fittings and flanges; 17-4 PH and 420 for higher strength. Chip control, coolant strategy and passivation are tuned to avoid work hardening and embedded iron contamination.
Common parts: threaded fittings, pump bodies, shaft sleeves, sanitary-style flanges
S45C / 1045, 42CrMo / 4140, 40Cr, A36 and Q355 for load-bearing components. Rough machining is completed before heat treatment whenever the drawing calls for hardened cores, tempered surfaces or induction-hardened journals.
Common parts: shafts, gear blanks, coupling bodies, mounting bases
SKD11 / D2, H13, P20, Cr12MoV and S136 for tooling, wear plates and mold components. We coordinate hardening, tempering and finish grinding so dimensional movement after heat treatment is removed in the final precision pass.
Hardness up to 58–62 HRC on request, hardness readings recorded
6061, 7075, 2024 and 5052 in plate, bar and billet form for lightweight frames, enclosures, heat sinks and robot structural parts. High-speed tool paths keep burrs minimal and leave clean anodizing-ready surfaces.
Natural, black, blue or red anodizing, sandblasting and brushing available
C3604 free-cutting brass, H62, tin bronze and phosphor bronze for connectors, valve internals, nuts, bushings and worm wheels. These alloys cut cleanly at high feed rates, which keeps unit cost competitive on repeating batches.
Fine internal threads and sealing seats are a regular requirement
TA2 / Grade 2 and TC4 / Grade 5 for parts that need high strength-to-weight ratio and corrosion resistance. Rigid fixturing, sharp tooling and controlled heat buildup keep thin walls and deep pockets dimensionally stable.
Typical for lightweight joints, fasteners and special fluid components
HT200, HT250, QT500-7 and QT600-3 castings are machined on fixtured setups for pump casings, bearing seats, gearbox housings and machine structural parts, with casting scale removed and mating faces milled flat.
Castings can be supplied by us or consigned by the customer
POM / Delrin, PA66 nylon with glass fiber, PEEK, PTFE, UHMWPE and PVC for insulators, guide blocks, spacers, wear strips and non-sparking components. Tool paths compensate for thermal expansion and the softer clamping behavior of polymer stock.
Natural stock colors kept clean and separated from metal swarf
Each process below is handled on the same production floor, so parts move between milling, turning, grinding and finishing without being outsourced to unrelated workshops.
Vertical machining centers produce stepped faces, deep pockets, keyways, dovetail slots, bore patterns and sealing grooves on block-type and plate-type parts. Work coordinates are probed in setup, and critical depths are checked while the part is still fixtured.
Slant-bed lathes turn shafts, sleeves, bushings, threaded inserts and connector bodies, with driven tools adding radial flats, cross holes and milled hex features in the same clamping to protect concentricity.
Five-axis setups reach compound angles, impeller blades, scroll surfaces and multi-face valve bodies in fewer setups. Indexed 3+2 machining is used where it delivers the same accuracy at lower cycle cost than full simultaneous motion.
Metric, unified, NPT, BSPP / G and BSPT threads are cut by tap or thread mill according to the drawing. Deep holes use peck cycles, and threaded ports receive gauge checks so mating fittings assemble without leakage.
Surface grinding and cylindrical grinding finish hardened ways, bearing journals and sealing faces to Ra 0.8 or finer, removing the distortion left by heat treatment and holding size on high-wear mating surfaces.
We arrange anodizing, hard anodizing, nickel plating, zinc plating, alkaline blackening, electropolishing, passivation, sandblasting, powder coating and silk screening through long-standing local finishing partners and inspect every returned batch ourselves.
A small sample of components regularly produced by our custom CNC milling service in China, spanning robotics, fluid power, electronic enclosures and rotating machinery.
Production quality depends as much on measurement as on cutting. The workshop is organized so machining, in-process checks and final dimensional inspection follow a fixed route for every batch.
A climate-controlled production floor laid out for material inbound, roughing, finishing, deburring, inspection and packed outbound zones, with batch travelers following each part through every stage.
Vertical milling centers handle plate and block work, hole patterns, pockets and tapped ports. Fixtures are designed per part family to keep repeat batches clamped the same way every time.
Slant-bed lathes produce rotational geometry with controlled surface finish, including stepped shafts, precision bushings, threaded fittings and parts combining turning with driven-tool milling.
Five-axis capability machines compound angles and continuous curved surfaces in a single setup, reducing accumulated alignment error on impellers, joints and multi-sided manifold bodies.
A digital profile projector compares edge profiles, radii, chamfers, thread forms and small stamped or machined features against the drawing, magnifying details that calipers cannot resolve reliably.
A coordinate measuring machine captures bore positions, true position, flatness, parallelism and spatial relationships in three axes, recording the values used in outgoing dimension reports for first articles and batch releases.
Every tolerance, thread standard, material grade and surface note on your drawing is listed on the routing card before cutting starts. If a note is ambiguous or a feature is expensive to produce as drawn, we come back with a specific question or a DFM suggestion instead of making an undocumented assumption on the shop floor.
Critical dimensions are measured with calibrated micrometers, bore gauges, height gauges, pin gauges, a profile projector and a coordinate measuring machine. First article inspection reports and batch dimension reports can be prepared in English, with actual measured values listed beside each drawing callout.
One-off and low-volume prototypes are treated as real orders rather than favors, while repeating batches benefit from stored fixtures, proven CAM programs and material forecasts. Customers can start with five pieces to validate assembly and scale to monthly releases without changing supplier.
Drawings, revision levels and inspection paperwork are handled in English, in both metric and inch units where needed. Parts are degreased, dried, individually bagged with desiccant where appropriate and packed in plywood or export cartons suited to long sea freight and air express shipments.
The same custom CNC milling service in China supports equipment builders that share one requirement: components that fit on assembly without rework.
Manifolds and valve blocks with cross-drilled galleries, threaded ports, spool bores and nickel-plated or anodized surfaces, with port threads gauged for leak-free assembly.
Robot joint housings, swing arms, bearing seats and lightweight structural plates in aluminum and steel, where bore alignment and surface finish directly affect motion smoothness.
Worms, worm wheels, shafts, coupling halves, flange bodies and reducer components in alloy steel and bronze, machined to fit existing bearing and seal selections.
Compressor vanes, impellers, sleeves, wear rings and pump mountings in alloy steel, stainless and cast iron, with balanced stock removal on rotating parts.
Aluminum cases, shielded enclosures, panel frames and heat-dissipating housings with precise cutouts, threaded inserts and brushed or anodized exterior surfaces.
Brackets, pivot blocks, adjuster plates, access covers and welded assembly components for packaging, food, textile, agricultural and construction equipment makers.
A predictable route matters as much as machine precision when buyers evaluate a custom CNC milling service in China, so every order follows the same four documented stages.
Geometry, material, tolerances, heat treatment and finish are reviewed against your model and drawing. Questions and DFM notes are raised before the quote is finalized, so the price reflects a manufacturable part.
Stock is cut from the specified grade, fixtures are prepared, and CAM tool paths are planned around the datums on the drawing, with roughing and finishing separated for stable dimensions.
The first piece is inspected after each major operation, tool wear is monitored through the run, and deburring follows machining while feature edges are still easy to access.
Finished parts are cleaned, checked against the full dimension list, treated or coated as specified, and packed with edge and thread protection for international transport.
A 3D model in STEP, IGES or X_T format is used for geometry and cycle estimation, while a 2D PDF or DWG drawing controls tolerances, threads, material grade and surface requirements. When a custom CNC milling service in China receives both files together, most quoting mistakes and follow-up questions are avoided.
No fixed minimum. Single prototypes, small validation batches of 5 to 50 pieces and repeating production lots are all routine. Setup cost is quoted separately from per-piece cost so small orders remain transparent.
General milling and turning work holds around ±0.05 mm without special process; precision features routinely reach ±0.005 to ±0.01 mm, and ground journals and faces can go tighter. The drawing callout always defines the target.
Yes. Shafts with milled flats and cross holes, fittings with side ports, and housings with turned bores plus milled mounting faces are common, and mixed-process routing is planned before production starts.
Simple prototypes commonly move through in roughly one to two working weeks, while complex multi-process parts and surface-treated batches take longer. A day-by-day schedule is agreed when the order is confirmed, with progress updates at material, machining and inspection stages.
Yes. Anodizing, plating, blackening, passivation, polishing, powder coating, laser marking and silk-screened part numbers can all be included in the finished delivery, with masking of mating threads and sealing faces arranged in advance.
Sourcing a custom CNC milling service in China works well when the workshop treats the drawing as the contract: every datum, tolerance band, thread form and finish note carried from the paper into the CAM program, the setup sheet and the inspection record. That is the working method behind the parts shown on this page. Milling and turning are planned together, material is bought to the named grade, and dimensions are verified with the same instruments the buyer would use on incoming inspection.
The advantage of a custom CNC milling service in China is not only a competitive unit price. It is the density of the surrounding supply chain: steel and aluminum stockholders, heat treatment shops, plating and anodizing lines, grinding capacity and export freight forwarders all operate within a short radius, which shortens lead times and keeps control of mixed-process parts such as hydraulic valve blocks, robot joint housings and hardened gearbox components. Coordinating those channels on the buyer's behalf is part of the job, rather than an extra charge negotiated order by order.
For product developers, this means a prototype can be cut quickly, assembled, revised and re-released without rebuilding the supplier relationship. For equipment manufacturers, it means repeating batches arrive with consistent clamping, consistent tooling strategy and consistent measurement records, batch after batch. Whether a component is a simple aluminum plate, a precision stainless fitting, a five-axis curved impeller or a turned, milled and plated assembly, the route stays the same: review the drawing carefully, cut the material conservatively, measure the critical features honestly, and pack the finished parts so they reach the assembly line in the same condition they left the inspection bench. That is the standard a dependable custom CNC milling service in China is expected to meet, and it is the standard we quote, machine, inspect and ship against on every order.
We provide custom machined parts, 5-axis linkage CNC machining, and the design, production, and assembly of machinery and equipment.