Aunov Tech builds this Custom Stainless Steel Sleeve Sheet Metal Stamping Deep Drawing Metal in stainless steel, from coil or bar through to the finished surfaces. In the assembly, the deep drawn tube carries fluid or motion through a closed drawn wall. Forming and machining share equipment, staff and batch records, and a design change is re-sampled in one place under one roof.
Product overview
The drawing for this stainless steel sleeve fixes, the formed envelope, flatness and hole location, controlled from the approved first article onward.
The whole route from die to finished stainless steel sleeve stays in house, which keeps the sample loop inside our own schedule, with the tooling history retained in house.
How the part is produced
Every stainless steel sleeve follows the same routed path: Drawing runs from flat blank to finished envelope in one controlled sequence; the part is annealed between stages so the wall thins evenly.
Every stepped cup order keeps its trace back to the approved first article, and a reorder is a repeat rather than a new start. Any change to the stepped cup drawing is re-approved and re-verified before production continues.
Materials and surface finish
Materials kept on the floor cover carbon steel SPCC / DC01, 304 and 316 stainless, aluminium, brass and copper and this stainless steel sleeve runs in 304 / 316 stainless steel.
The finish is chosen for the duty it will see: zinc, nickel or chrome plating, anodising, powder coating, electrophoresis and passivation. The finish on this stainless steel sleeve is locked to the drawing revision, so later orders match.
Each stepped cup shipment is verified against the master sample before it leaves the shop. Any change to the stepped cup drawing is re-approved and re-verified before production continues.
Quality control
The factory operates with ISO 9001 certification: material traceability starts with mill certificates, first-article geometry is confirmed on the CMM, and run inspections follow an agreed sampling plan. The stepped cup first article records wall thickness along the length. Functional testing – torque, leak or pressure – can be written into the plan, with certificates included in the shipment file.
Applications
This stainless steel sleeve is used in industrial and appliance assemblies across automotive, appliance and industrial programmes.
This stainless steel sleeve is supplied to several positions in the same machine, so the finish is chosen to cover the harshest of them, without a second tooling round.
Options and variations
Frequently varied options
Material – carbon steel, stainless, aluminum or brass; finish – plating, anodizing or coating matched to the working environment; features – closed or open ends, wall bands, inside finish ranges, flanges and port features added by secondary ops; lot size – prototypes for validation, then scheduled batches against a call-off.
Tooling impact is stated line by line for each change, making the cost of each choice clear before you commit.
Specifications
| Item | Custom Stainless Steel Sleeve Sheet Metal Stamping Deep Drawing Metal |
|---|---|
| Brand | AUNOV |
| Designing | DFM feedback accompanies the quotation, so surprises are caught before the die is cut. |
| Tooling | Die design and toolmaking stay in house, so no tooling step is outsourced, and first-article timing is measured from the tooling start date. |
| Samples | First-article samples ship with a dimensional report and material certificate. |
| 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; alternatives quoted with the quotation, samples approved in writing. |
| Processing | Tube drawing, straightening and turning in one flow; every stage is logged against your part number. |
| Equipment | Tube drawing lines with annealing and finish-turning cells, with CNC turning centres for secondary operations and CMM inspection. |
| Tolerance | +/-0.02 mm on fitted diameters, +/-0.1 mm on formed ends; finer bands confirmed from capability data before quoting. |
| Delivery terms | Shipping terms are set with the order: FOB, CIF or DDP, T/T or L/C, door delivery quoted. |
Packing and shipment
For this stainless steel sleeve, protection starts at the surface: interleaving, bagging or tray packing is matched to the surface, in sealed cartons on export pallets, with documents issued to your instructions.
