Aunov Tech supplies the 304 201 Stainless Steel Capillary Precision Tube with a Diameter of 2mm as a stainless steel component manufactured entirely in house. In service, the deep drawn tube carries fluid or motion through a closed drawn wall. The same floor forms, machines and inspects the part, and a design change is re-sampled in one place without a second supplier involved.
Product overview
What matters most on this stainless steel tube is, the draw ratio, corner radii and the faces that must stay flat, checked by CMM at first article and by gauge in production.
Die work and machining for this stainless steel tube sit on the same floor, which keeps the sample loop inside our own schedule, and the same die can be re-cut from the original data.
Production route
Manufacturing runs on a controlled process path: Coil is blanked and drawn through progressive and single-stage dies; secondary machining holds the seats, threads and faces that forming cannot produce.
Route cards follow each cup batch through the shop, so the next run starts from the data that already worked. Any change to the cup drawing is re-approved and re-verified before production continues.
Materials and surface finish
Everything is drawn from a fixed stock list: cold-rolled steel (SPCC / DC01), 304 / 316 stainless, aluminium, brass, copper and bronze and this stainless steel tube runs in 304 / 316 stainless steel.
The surface treatment is picked to match the service conditions: polishing, zinc / nickel / chrome plating, anodising or powder coating. The agreed finish for this stainless steel tube travels with the part number on every reorder.
Repeat cup orders are measured against the approved sample, so neither material nor finish drifts between lots. The signed cup sample remains the reference and is kept with the job file.
Quality control
The plant is ISO 9001 certified: incoming material is verified against mill certificates, a full CMM report approves the first article, and routine sampling keeps batches aligned with the first article. The cup first article records wall thickness along the length. If the assembly calls for torque, leak or pressure proof, the test is built into the quality plan, and results travel with the batch paperwork.
Applications
The stainless steel tube is specified into industrial equipment and general assembly work in volume programmes as well as aftermarket supply.
One drawing for this stainless steel tube is commonly applied to several programmes, so one tooling set serves every position, and no re-tooling is needed.
Customization and options
What customers usually vary
Variations that come up most often on this stainless steel tube: grade and finish for the environment, wall thickness bands, flange and rim forms, threads, bosses and closed ends, and the batch pattern – prototype, pilot lot or scheduled production.
Options for this stainless steel tube already covered by the die are shown on the quote, so there are no surprise tooling charges after approval. The cup quotation records who owns the tooling.
Specifications
| Item | 304 201 Stainless Steel Capillary Precision Tube with a Diameter of 2mm |
|---|---|
| Brand | AUNOV |
| Designing | Quotation reflects the real drawing: tolerances, finish and features are priced as specified. |
| Tooling | Dies are made and maintained in house, which keeps tooling lead time and cost under control. |
| Samples | Prototype and pre-production samples are provided against the drawing, so the approved first article becomes the gauge reference, and the signed sample is kept for future reorders. |
| Materials | Materials held include carbon steel, 304 / 316 stainless, aluminium and brass; the final grade is fixed with the drawing review. |
| Surface finish | Plating, coating or polishing to suit the drawing; the agreed finish travels with the part number. |
| Processing | Tube drawing with precision turning on critical diameters; first articles verify the whole flow before the run is released. |
| Equipment | Tube drawing lines with annealing and finish-turning cells; secondary ops run on CNC turning centres, inspection on the CMM. |
| Tolerance | +/-0.05 mm on bore, wall thickness band confirmed at first article; finer bands confirmed from capability data before quoting. |
| Delivery terms | CIF or DDP, with FOB available, T/T or L/C, with D/P accepted on repeat business; repeat orders reuse the approved first article. |
Packaging and delivery
The packing method protects the surfaces of this stainless steel tube: interleaves, bags or trays are matched to the surface treatment, in sealed export cartons, palletised and marked as you direct.
