Steel Machined Cover Flange with Bolt Circle

Steel Machined Cover Flange with Bolt Circle
Steel Machined Cover Flange with Bolt Circle

Produced in stainless steel by Aunov Tech, the Custom Stainless Steel CNC Machined Fittings is formed and machined on the same floor. On the product, the CNC machined part provides the finished surfaces, threads and seats the mating parts locate on. Forming and machining share equipment, staff and batch records, which keeps tolerances consistent from sample to volume with no third party in the loop.

Product overview

The specification of this stainless steel fitting turns on, draw depth, wall band and the surfaces that forming cannot hold, audited against the approved sample at each production release.

Die building, pressing and machining for this stainless steel fitting are all in house, so feasibility questions are answered on the shop floor, and the same die can be re-cut from the original data.

How it is manufactured

The route for this stainless steel fitting is fixed and repeatable: The part is machined from bar or plate on CNC lathes and mills; threads are single-pointed or rolled and seats bored in one setup where possible.

The cover flange manufacturing record is archived together with the drawing revision that produced it. Deviations on the cover flange are reported before shipment rather than found on your assembly line.

Materials and finishing

Everything is drawn from a fixed stock list: SPCC / DC01 carbon steel, 304 / 316 stainless, aluminium, brass, copper and bronze and the grade agreed for this stainless steel fitting is 304 / 316 stainless steel.

The surface treatment is picked to match the service conditions: polishing, zinc / nickel / chrome plating, anodising or powder coating. It is written into the drawing for this stainless steel fitting, so it cannot drift between batches.

Every cover flange 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 cover flange drawing is re-approved and re-verified before production continues.

Quality control

Quality management is certified to ISO 9001: mill certificates cover every delivery of stock, a full CMM report approves the first article, and routine sampling keeps batches aligned with the first article. The cover flange first article is measured on the CMM and thread gauges confirm class. Functional testing – torque, leak or pressure – can be written into the plan, and the batch file carries the results.

Applications

You will find this stainless steel fitting inside industrial equipment and general assembly work in both OEM and aftermarket supply.

The same stainless steel fitting is used across several platforms, so the tightest tolerance in the family sets the spec, and no re-tooling is needed.

Customization and options

Options changed most often

Points customers normally tailor on this stainless steel fitting: 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 fitting is explicit about what the die already covers, so there are no surprise tooling charges after approval. The quotation for the cover flange states both quantities and price breaks.

Specifications

ItemCustom Stainless Steel CNC Machined Fittings
BrandAUNOV
DesigningSend drawings, or send a sample to be measured – DFM notes are returned before any tooling is cut; changes are priced before they are made.
ToolingProgressive and drawing dies are designed and built in house, so die cost stays transparent, and maintenance is tracked against the part number.
SamplesSample parts are measured and reported before submission, so any deviation is corrected at sample stage, and the signed sample is kept for future reorders.
MaterialsCarbon steel, 304 / 316 stainless, aluminium and brass are all held in stock; special grades are sourced to the drawing when volumes justify.
Surface finishZinc, nickel or chrome plating, anodising, passivation or e-coat; masking and laser marking available where needed.
ProcessingBar-fed turning with milled features completed in the same clamping; in-process checks sit between stages, not only at the end.
EquipmentCNC turning centres with bar feeders and 3-/4-axis machining centres, with CNC turning centres for secondary operations and CMM inspection.
Tolerance+/-0.02 mm general machining, tighter on flagged dimensions; dimensional reports accompany the first article.
Delivery termsFOB, with DDP offered for EU and US addresses, payment by T/T, L/C at sight or D/P; price breaks tie to annual volume.

Packaging and delivery

Finish comes first when packing this stainless steel fitting: the coating decides whether parts are interleaved, bagged or tray-packed, in sealed cartons on export pallets, with documents issued to your instructions.