Long thin stainless capillary needle tubes – the extreme end of tube drawing where length-to-bore ratios get severe. Straightness matters as much as bore on needles this slender, so they are drawn and stress-relieved to stay true.
Function and Design
Most of the difficulty in a long thin capillary is invisible: wall consistency, concentricity, burr control. The long thin capillary is produced to print, with the features that carry function inspected first.
Key Features
- Being stainless, it handles washdown, humidity and process media without a coating that can chip.
- Pricing steps down with volume, supported by in-house tooling.
- Batches are held consistent by first-article verification and in-run sampling.
- Material: stainless steel (304 / 316) from verified mills, so repeat orders of the long thin capillary land on the same grade every time.
- Process: drawn-tube production for the long thin capillary with anneal windows logged per batch.
- Finish: Natural by default on the long thin capillary; plating, powder and e-coat options priced with the quotation.
- Size: Dimensions of the long thin capillary follow the customer print; specials are quoted from the drawing.
- Custom: OEM/ODM to drawing; the long thin capillary is quoted with real lead times, not estimates.
Where It Is Used
Typical applications include medical and food-grade devices, instrument capillary lines, industrial gauge tubing.
Our Production Advantage
A long thin capillary looks like the simplest item in a catalogue and is often the most demanding to make consistently. Any drift in the long thin capillary process is corrected at the machine, not sorted out at inspection.
OEM pricing and free samples on request, with manufacturability checked before quotation.