Product line 02

Industrial Machinery & Parts

Machined parts, automation components, tooling and packaging equipment sourced against your drawing, with material certificates and dimensional reports issued before shipment.

±0.01mm

Typical tolerance

1 pc

Prototype MOQ

EN 10204

Material certs

Quick answer

Industrial sourcing from China splits into two very different purchases. Standard components — bearings, fasteners, pneumatic fittings, sensors, motors — are bought from stock against a part number, with lead time measured in days. Custom parts are bought against a drawing, where tolerance, material grade and surface finish define both the price and which factory can make them. CHINAISPP handles both, quotes from two to four workshops per process, and ships with material certificates, dimensional reports and export packing that survives sea freight.

Buying machinery parts from China without a drawing review

Most failed machinery orders fail at the drawing, not at the factory. A tolerance stated as plus or minus 0.05 mm on a part that is 400 mm long is a different manufacturing problem from the same tolerance on a 40 mm part, and a surface finish called out as Ra 1.6 means a grinding operation that changes the price by a third. When a buyer sends a drawing without those details resolved, every workshop quotes a different interpretation and the cheapest quote is usually the one that read the drawing most loosely.

We review the drawing before it goes out. That means flagging dimensions that cannot be inspected, material grades that are not available in the requested form, threads and fits that conflict, and features that would be far cheaper as a separate operation. The review goes back to you as questions, not as a revised design, because the decision about what your part needs to do belongs to you.

Standard components are a simpler purchase but not a safer one. A bearing with the right dimensions and the wrong internal clearance will fit and fail early. A pneumatic cylinder rated for the right bore and the wrong duty cycle will work in testing and leak in service. We buy these against the manufacturer part number wherever the part number matters, and against specification only where it genuinely does not.

The logistics side is where industrial goods differ most from consumer goods. A crate of machined parts weighs what it weighs, and sea freight is priced accordingly, so packing decisions affect the landed cost as much as the unit price does. We use export-grade crating with ISPM 15 heat-treated timber, vapour barrier where the route crosses humid zones, and we photograph the packing before the container is sealed.

What we source in this category

Machining, tooling, motion and equipment. Heavy or oversized items are quoted with freight included so the landed cost is visible from the first response.

CNC machined parts

Milling and turning in aluminium, stainless, brass and engineering plastics, from one-off prototypes to batches of several thousand.

Sheet metal & fabrication

Laser cutting, bending, welding and powder coating, with flat-pattern checks and weld inspection on load-bearing parts.

Automation components

Linear guides, ball screws, stepper and servo motors, pneumatic cylinders, sensors and PLC peripherals.

Tooling & hardware

Injection moulds, stamping dies, jigs and fixtures, plus hand tools, fasteners and industrial hardware in standard grades.

Packaging machinery

Filling, sealing, labelling and cartoning equipment, quoted with commissioning support and spare parts list.

Spare parts & castings

Replacement parts for existing equipment, sand and die castings, forgings, and reverse-engineered components from a sample.

Process capability and what you receive

Indicative capability for the processes we place most often. Anything outside these ranges is possible but needs a specific factory rather than a general one.

Process	Typical tolerance	Order size	Documentation supplied
CNC milling	±0.02 mm	1–5,000 pcs	Dimensional report, material certificate, surface finish record
CNC turning	±0.01 mm	1–10,000 pcs	Dimensional report, material certificate, roundness check
Sheet metal fabrication	±0.1 mm	10–2,000 pcs	Flat pattern, weld inspection, coating thickness report
Die casting & forging	±0.05 mm	500–20,000 pcs	Material certificate, X-ray or dye penetrant on request
Injection mould tooling	Steel grade dependent	1 tool	Mould drawing, steel certificate, trial report, sample parts
Standard components	Per manufacturer	1 pc upward	Original packing, manufacturer part number, CoC on request

How a machinery order runs

Drawing-led orders need one extra step before quoting compared with consumer goods, and skipping it is what produces the arguments later.

1

Drawing and specification review

We check tolerance feasibility, material availability and inspectability, and return questions before any factory sees the file.
2

Process-matched quotations

Two to four workshops chosen for the specific process, quoted with material, machining and surface treatment separated.
3

First article and inspection plan

The first part is measured against the drawing in full, and the measurement method for the production run is agreed at the same time.
4

Production and in-process checks

Critical dimensions checked during the run rather than only at the end, so a drift is caught while it is still correctable.
5

Export packing and documents

ISPM 15 crating, packing photographs, commercial invoice, packing list and certificate of origin assembled before booking.

Where this fits

This category is one of four we source. The other product lines, and the services that run around them, are below.

All Products Overview of the four product lines Electronics & Components Product line Consumer & Household Goods Product line Custom OEM & Private Label Product line Procurement & Order Management Service Logistics & Fulfillment Service

Frequently asked questions

Can you make a part from a sample without a drawing?

Yes, by reverse engineering: the part is measured and a drawing is produced for you to approve before machining. This works well for simple geometry and less well for parts where the material or heat treatment matters and cannot be determined from the sample. In that case we say which properties are unknown rather than guessing.

What is the real minimum order for CNC parts?

One piece. Unlike moulding or casting, machining has no tooling threshold, so prototypes are normal. What changes with volume is the setup cost per unit: at ten pieces the setup dominates, at a thousand it is negligible. We show both numbers so you can see where the crossover sits.

How are material certificates verified?

The certificate must name the heat or batch number that appears on the material itself, and that number is recorded on our inspection report. A certificate with no traceable batch number, or one issued for a different heat, is not evidence, and we treat it as a discrepancy rather than accepting the document at face value.

Which shipping method suits heavy machinery parts?

Sea freight for anything above roughly 100 kg or one cubic metre, because air freight scales with weight and becomes punitive quickly. LCL is workable for a single crate; FCL makes sense past about 15 cubic metres. For urgent spares under 30 kg, express couriers are still the right answer despite the rate.

Do you handle installation or commissioning for equipment?

For packaging and production equipment we can arrange a factory technician to attend site, quoted separately as travel, visa and daily rate. This is common for machinery above a certain value. What we do not do is warrant the installation ourselves; the warranty stays with the equipment manufacturer.

What happens if parts arrive out of tolerance?

We compare your measurements with the inspection report taken before shipment. If the parts left the factory within tolerance and arrived out of it, the question becomes freight damage and an insurance claim. If they left out of tolerance, the workshop reworks or remakes at its cost. That is why the pre-shipment measurement record matters more than the invoice.

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