What to Prepare Before Outsourcing Tube Processing: An RFQ Checklist
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When asking a tube processor for a quotation, the more complete your information, the faster and more accurate the quote. Here is TONG DA's checklist.
What to prepare
| Item | Details |
|---|---|
| Tube | Material (carbon steel, stainless, aluminium, copper), OD, wall, length, seamed or seamless |
| Drawing | Part drawing or sample photos, showing operation positions and tolerances |
| Operations | Cutting, end closing, holes, roll grooving, beading, reducing, notching, punching, flattening, bending |
| Quantity | Trial quantity, batch size and estimated annual volume |
| Tube supply | Customer-supplied tube or sourced by the processor |
| Finishing | Plating or painting afterwards, and who handles it |
Buy a machine or outsource?
- Outsource when volume does not yet justify a machine, a new product is in trial, your line is missing one operation, or the process needs proving.
- Buy when the design is fixed and volume is high and steady.
TONG DA is both a machine builder and a contract processor, so you can start with contract work and buy a machine later.
Why TONG DA
- TONG DA has designed and built tube processing machines since 1989 and runs contract processing on its own machines.
- Tooling is designed to your tube and drawing; sample trials available.
- CE certified; machines sold to the USA, Germany, Turkey, the UK, India, China and more.
FAQ
Can I ask for a quote with a sample but no drawing?
Yes – send the sample or clear photos with dimensions.
Can you do a small trial run?
Yes, mass production follows once the trial is approved.
How do I request a quotation?
Send the information in the checklist above to sales@tdco.com.tw and we will reply promptly.