Aunov Tech builds this Small Drawn Brass Sleeves in stainless steel, from coil or bar through to the finished surfaces. Once installed, the deep drawn tube guides or contains the mating part along its bore. Drawing, cutting and measurement sit on one floor, so first-article dimensions hold through volume batches with no third party in the loop.
Product overview
What defines this brass sleeve is, wall thinning, concentricity and the finished mating faces, recorded on the inspection report for every batch.
The whole route from die to finished brass sleeve stays in house, so a drawing change is absorbed in one step, and the same die can be re-cut from the original data.
How it is manufactured
Production follows a defined route: The shell is drawn from a blank in successive stages, annealed where the wall thins; flanges and rims are formed in the same line, then trimmed to length.
Batch records for the small sleeve are filed against the part number, so process settings are reused instead of re-invented. That record is what every small sleeve reorder is built on, so nothing changes silently between shipments.
Materials and finishing
The standard stock list carries cold-rolled steel (SPCC / DC01), 304 / 316 stainless, aluminium, brass, copper and bronze and this brass sleeve runs in H62 brass.
Coating and polishing are matched to the end use: electrophoresis, powder coating, anodising and zinc / nickel plating. It is fixed on the drawing for this brass sleeve, so repeat orders never reopen the question.
Route cards follow each small sleeve batch through the shop, so the next run starts from the data that already worked. That record is what every small sleeve reorder is built on, so nothing changes silently between shipments.
Quality control
The plant is ISO 9001 certified: mill certificates cover every delivery of stock, the CMM measures the first article dimension by dimension, and later batches follow the sampling plan agreed at approval. Wall thickness on the small sleeve is checked at first article, not assumed. Functional testing – torque, leak or pressure – can be written into the plan, and the batch file carries the results.
Where the part is used
You will find this brass sleeve inside industrial and appliance assemblies under schedules that run for years at a time.
The same brass sleeve is often run in more than one assembly, so one tooling set serves every position, and the drawing stays common.
Specifications
| Item | Small Drawn Brass Sleeves |
|---|---|
| Brand | AUNOV |
| Designing | Quotation follows the print, not a catalogue – DFM notes are returned before any tooling is cut; changes are priced before they are made. |
| Tooling | Our toolroom covers die design, wire-cut EDM and maintenance, so the die charge appears as its own quotation line, and the charge is refundable against agreed volumes. |
| Samples | Free samples are available on standard items, with reports attached. |
| Materials | H62 brass and H65 free-cutting brass; lead-free options and RoHS declarations available. |
| Surface finish | Surface treatment matched to the duty: plating, coating or polishing; alternatives quoted with the quotation, samples approved in writing. |
| Processing | Deep drawing from coil or blank, with in-process annealing so walls thin evenly; in-process checks sit between stages, not only at the end. |
| Equipment | Mechanical presses 5-250 T plus 250-500 T hydraulics, with in-line annealing, with CNC turning centres for secondary operations and CMM inspection. |
| Tolerance | +/-0.03 mm on turned secondary features, +/-0.1 mm on as-drawn walls; critical dimensions carry CMM data with the shipment. |
| Delivery terms | CIF or DDP, with FOB available, T/T with deposit and L/C for larger runs; price breaks tie to annual volume. |
