China CNC Machining Services — Factory Direct, Worldwide Shipping

What we machine on this process

Sourcing machined parts from China works best when you treat it as one process rather than a series of handoffs. You send a drawing; we return DFM feedback and a quote within 24 hours; you approve a sample; we run production. On our floor in Qidong City, Jiangsu Province, China we machine parts by turning and milling, with Swiss-type work for small parts at volume, covering aluminium, stainless steel, carbon and alloy steel, brass, copper and titanium. Forging, stamping, casting, heat treatment and plating are available through our vetted partner network, managed under one quality process, so a single order can carry a part from raw material to finished surface. Because we are a factory rather than a trading desk, drawing review, programming and machining stay under one roof.

Materials and finishes

The material you call out drives both price and lead time, so we confirm the grade in the quote. We machine aluminium 2024, 5052, 6061 and 7075; stainless steel 301, 303, 304, 304L, 316, 316L, 410, 416 and 17-4PH; carbon and alloy steel 1045, 1215, 4140, D2 and O1; plus brass, copper, bronze, titanium and engineering plastics — the full list is on our materials page. If a grade is hard to source locally, we tell you before you order rather than substitute silently. Finishes such as anodizing, passivation, zinc plating and powder coating run through our vetted partner network, managed under one quality process. State the end use and we will suggest a finish that holds up in service.

Size, tolerance and capacity limits

Three numbers drive unit price on a China sourcing order: tolerance, tooling and quantity. We hold precision features to ±0.01 mm with general tolerances to ISO 2768-m, and our milling envelope is 800 × 500 mm. MOQ starts at 50 pieces per style and material, with samples from a single piece, because the setup and tooling cost is spread across the run — a 50-piece order pays more per part than a 500-piece order. Where a job needs a dedicated fixture or special tooling, we list that cost separately in the quote so you can see exactly what you are paying for. Monthly capacity is over 100,000 parts, so a repeat order slots into the schedule without stalling your delivery. Samples leave in 5–10 days and production in 25–35 days after drawing approval.

Documents and shipping

Shipping and documents are part of the quote, not an afterthought. We pack to survive export handling, arrange sea or air freight with the forwarder of your choice, and prepare the export paperwork so customs clearance is straightforward. Every batch ships with a material certificate (MTR) and pre-shipment photos of your actual parts — the two documents you receive as standard — so you can confirm the grade and see the finish before the box is dispatched. If your buyer or assembly line needs a specific document, ask at the quote stage and we will confirm what we can supply. One contact handles the order from drawing to delivery, and our packaging and shipping page explains how boxes leave our floor.

Industries we support

Buyers source from us across automotive, medical, aerospace, electronics, hydraulic and pneumatic and oil and gas, among others. The process is the same in every sector: you send the drawing, we return DFM feedback and a quote, and the same floor produces the sample and the production run. That consistency is what lets a prototype order scale into repeat volume without changing supplier. Browse our industries hub to see how each sector specifies its parts.

Design guidelines for cost and manufacturability

A clean drawing pack is the single biggest lever on your quote. Send a STEP, IGES, DWG, DXF or PDF that shows the finished geometry, the material and grade, the tolerance callouts, the thread and finish requirements, and the required quantity. Missing tolerance callouts default to ISO 2768-m, so state the tight figures only where function needs them. Two common misunderstandings about Chinese suppliers are worth clearing up: a low MOQ quote often hides setup cost in the unit price, and a low unit price usually assumes a looser tolerance or a different finish than you intended — which is why we return DFM feedback with the quote rather than a bare number. When you evaluate a supplier, weigh how it responds to your drawing over the headline figure: ask about tooling cost, how the material certificate is supplied, and how changes after the sample are handled. Our drawing requirements and how to order pages walk through the whole routine.