Aunov Tech supplies the Deep Drawn Electronic Expansion Valve Tube as a brass or stainless steel component manufactured entirely in house. In operation, the CNC machined part carries the controlled features that forming alone cannot hold. One production floor covers forming, finishing and inspection, so the approved sample defines every later batch under one roof.
Product overview
For this metal tube, the drawing centres on, the draw ratio, corner radii and the faces that must stay flat, re-checked whenever the drawing is revised.
The whole route from die to finished metal tube stays in house, which keeps the sample loop inside our own schedule, and the approved sample is kept as the master.
From coil to finished part
Production follows a defined route: The drawn envelope is produced in stages with anneals between them; the finishing operations hold the concentricity the drawing calls for.
Production batches of the electronic expansion valve are gauged back to the signed first article, not to a memory of it. That record is what every electronic expansion valve reorder is built on, so nothing changes silently between shipments.
Materials and finishing
Everything is drawn from a fixed stock list: cold-rolled steel (SPCC / DC01), 304 / 316 stainless, aluminium, brass, copper and bronze and this metal tube runs in carbon steel or stainless.
Because the part works in contact with media, the coating is chosen for cleanliness: zinc, nickel or chrome plating, anodising, powder coating, electrophoresis and passivation. The finish on this metal tube is locked to the drawing revision, so later orders match.
Production batches of the electronic expansion valve are gauged back to the signed first article, not to a memory of it. Deviations on the electronic expansion valve are reported before shipment rather than found on your assembly line.
Quality control
The factory operates with ISO 9001 certification: material traceability starts with mill certificates, the CMM measures the first article dimension by dimension, and production batches are inspected on a sampling plan. First article of the electronic expansion valve: CMM data on diameters, thread class confirmed by gauge. 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.
Typical applications
This metal tube is used in power supplies, antennas and electronic housings for OEM and Tier-1 customers.
A single design of this metal tube is often reused across a product family, so one tooling set serves every position, and the same first article applies throughout.
Specifications
| Item | Deep Drawn Electronic Expansion Valve Tube |
|---|---|
| Brand | AUNOV |
| Designing | DFM feedback accompanies the quotation, so surprises are caught before the die is cut. |
| Tooling | Progressive and drawing dies are designed and built in house, so a die can be re-cut against the approved drawing, and maintenance is tracked against the part number. |
| Samples | Sample lead time is quoted with the order, and the approved sample governs the run. |
| Materials | Materials held include carbon steel, 304 / 316 stainless, aluminium and brass; mill certificates and heat numbers accompany the first article. |
| Surface finish | Plating, powder coating, anodising or polishing, per the print; finish thickness and adhesion checked on the first article. |
| Processing | Tube drawing with precision turning on critical diameters; first articles verify the whole flow before the run is released. |
| Equipment | Drawn-tube benches, in-line annealing and CNC turning, with in-house toolmaking to keep dies and fixtures maintained. |
| Tolerance | +/-0.03 mm on machined ends, straightness per print; finer bands confirmed from capability data before quoting. |
| Delivery terms | Freight is quoted to your door in FOB, CIF or DDP terms, payment by T/T or L/C. |
