Equipment and methods of production
| Process | Sawing | Sawing | Shearing | Rotary cut off |
|---|---|---|---|---|
| Range | Method 1 | Method 2 | Method 3 | Method 4 |
| Outside diameter | 12 – 102 mm | 10 – 81mm | 15 – 152 mm | 20 – 90 mm |
| Wall thickness | 1 – 3 mm | 0,5 – 6 mm | max. 7 % D | 0,7 – 12 mm |
| Length of a tube | 25 – 4500 mm | 15 – 340 mm | 25 – 780 mm | 150 – 2000 mm |
| Tolerances of tubes | ± 0,25 mm | ± 0,025 mm | ± 0,25 mm | ± 0,11 – ± 0,19 mm |
| Stability of the manufacturing process | CpK > 1,67 | CpK > 1,67 | ||
| Tube ends | Passivating the ends at L = 100 – 4500 mm | Beveling tube ends | Beveling tube ends | Beveling tube ends |
| D = 10 – 81 mm L = 15 – 340 mm 5° – 85° (min. d = 12 mm) | D = 15 – 70 mm L = 30 – 690 mm | D = 20 – 90 mm L = 150 – 2000 mm 5° – 85° (min. d = 18 mm) | ||
| Surface protection | Washing and passivation at L = 100 – 3000 mm | Without protection or oiled | Without protection or oiled | Without protection or oiled |
