Cookies. We use our own necessary cookies to make the website work (session, language and quote basket). If you accept, we will also use third-party cookies: Google Analytics, to understand how the website is used, and Google Ads, to show advertising related to your visits (Google Ireland Limited, with possible transfers to the United States). If you reject them, the website works just the same. Cookie policy
Calibrated tube BK 80 x 71 x 4,5 mm
| Designation | BK 80x71x4,5 | |
|---|---|---|
| Outer diameter | 80 | mm |
| Inner diameter | 71 | mm |
| Thickness | 4,5 | mm |
| Cross-sectional area | 10,7 | cm² |
| Second moment of area | 76,3 | cm⁴ |
| Elastic section modulus | 19,1 | cm³ |
| Linear weight | 8,38 | kg/m |
Seamless precision tube measuring 80 x 71 x 4.5 mm (outside diameter 80 mm, inside diameter 71 mm, wall thickness 4.5 mm), with an approximate weight of 8.38 kg/m. Available in 6,000 mm lengths for hydraulic, pneumatic and mechanical applications.
They are manufactured without welding and are annealed and normalized to improve their mechanical properties. Their dimensional accuracy makes them suitable for hydraulic and pneumatic circuits, cylinders and machining.
- Theoretical weight: 8.38 kg/m
- Length: 6,000 mm
- Outside diameter: 80 mm
- Inside diameter: 71 mm
- Wall thickness: 4.5 mm
- Outside diameter tolerance: ±0.08 mm
- Inside diameter tolerance: ±0.15 mm
- Standard grade: St-35 or E235
Price and availability on request. Contact us for other sizes, grades or lengths.




