The 304 316 stainless steel tube capillary variable diameter tube hollow is produced by Aunov Tech from stainless steel, formed and finished under one roof. In duty, the deep drawn tube provides a sealed cylindrical body the assembly builds into. One production floor covers forming, finishing and inspection, keeping first-article quality through scheduled runs under one roof.
Product overview
This stainless steel tube is defined by, wall thickness control, flange geometry and the sealing surface, recorded on the inspection report for every batch.
Die work and machining for this stainless steel tube sit on the same floor, so a change of wall or hole does not restart the programme, and the approved sample is kept as the master.
Production route
Every stainless steel tube follows the same routed path: The shell starts as coil or blank and is drawn through single and progressive dies; after drawing, critical faces are machined and the part is degreased and gauged.
Production batches of the flanged-end tubes, three-piece are gauged back to the signed first article, not to a memory of it. Any change to the flanged-end tubes, three-piece drawing is re-approved and re-verified before production continues.
Materials and finishing
Working stock covers carbon steel SPCC / DC01, 304 and 316 stainless, aluminium, brass and copper and this stainless steel tube runs in 304 / 316 stainless steel.
The finish is chosen for the duty it will see: polishing, plating in zinc, nickel or chrome, anodising, powder coating, electrophoresis and passivation. The choice is recorded on the drawing for this stainless steel tube, so the decision never has to be made twice.
Production batches of the flanged-end tubes, three-piece are gauged back to the signed first article, not to a memory of it. The signed flanged-end tubes, three-piece sample remains the reference and is kept with the job file.
Quality control and inspection
An ISO 9001 certified system governs production: material traceability starts with mill certificates, the first article is CMM-measured against the print, and run inspections follow an agreed sampling plan. Wall section of the flanged-end tubes, three-piece is verified at first article. Where the application asks for it, torque, leak or pressure testing is added to the plan, and the batch file carries the results.
Where the part is used
The stainless steel tube sits in industrial machinery and equipment assemblies in volume programmes as well as aftermarket supply.
The same stainless steel tube is often run in more than one assembly, so the specification is set by the toughest of them, and the drawing stays common.
Customization and options
The options customers tune most
Typical decisions customers make on this stainless steel tube: material and coating for the duty, wall bands, flange forms, threads and bosses, closed ends and finishes matched to the working environment, and whether the first order is a prototype, a pilot lot or a production release.
The quotation for this stainless steel tube is explicit about what the die already covers, so you are not charged twice for a feature the die already makes. Changes to the flanged-end tubes, three-piece are made only under a written revision.
Specifications
| Item | 304 316 stainless steel tube capillary variable diameter tube hollow |
|---|---|
| Brand | AUNOV |
| Designing | Made to your 2D/3D drawings (PDF, DWG, STEP, IGS) – samples are reverse-measured into a controlled drawing; the same drawing is used for every repeat order. |
| Tooling | Dies are made and maintained in house, which keeps tooling lead time and cost under control. |
| Samples | Pre-production samples come with a full inspection report, so any deviation is corrected at sample stage, and later batches are gauged back to the signed sample. |
| Materials | Stock covers carbon steel (SPCC / DC01), 304 / 316 stainless, aluminium and brass; mill certificates and heat numbers accompany the first article. |
| Surface finish | Zinc, nickel or chrome plating, anodising, passivation or e-coat; the finish is inspected with the dimensional report on the first article. |
| Processing | Tube drawing, straightening and turning in one flow; every stage is logged against your part number. |
| Equipment | Tube drawing benches with in-line annealing furnaces; first articles and batch samples are checked on the CMM. |
| Tolerance | +/-0.02 mm on fitted diameters, +/-0.1 mm on formed ends; GD&T per drawing, PPAP-style reports on request. |
| Delivery terms | CIF or DDP, with FOB available, payment by T/T or L/C, quoted in USD or EUR; call-off schedules are supported. |
Packaging and delivery
Packaging protects the finished surfaces of this stainless steel tube: the coating decides whether parts are interleaved, bagged or tray-packed, in sealed cartons on export pallets, documented and marked to your instruction.
