| DN | SPIRAL STEP mm | WEIGHT Kg/m | Radius of curvature mm | Operating pressure bar | empty bar |
| 50 | 45 | 0.4 | 30 | 0.90 | 0.400 |
| 60 | 45 | 0.5 | 36 | 0.78 | 0.260 |
| 65 | 45 | 0.5 | 39 | 0.68 | 0.240 |
| 70 | 45 | 0.5 | 42 | 0.67 | 0.210 |
| 75 | 45 | 0.5 | 45 | 0.62 | 0.180 |
| 80 | 45 | 0.6 | 48 | 0.61 | 0.160 |
| 90 | 45 | 0.6 | 54 | 0.56 | 0.120 |
| 100 | 60 | 0.6 | 60 | 0.51 | 0.100 |
| 110 | 60 | 0.6 | 66 | 0.48 | 0.080 |
| 120 | 60 | 0.6 | 72 | 0.36 | 0.070 |
| 125 | 60 | 0.7 | 75 | 0.33 | 0.060 |
| 130 | 60 | 0.7 | 78 | 0.28 | 0.060 |
| 140 | 60 | 0.7 | 84 | 0.25 | 0.050 |
| 150 | 60 | 0.8 | 90 | 0.22 | 0.040 |
| 160 | 60 | 0.8 | 96 | 0.21 | 0.040 |
| 170 | 60 | 0.8 | 102 | 0.19 | 0.040 |
| 175 | 60 | 0.9 | 105 | 0.18 | 0.030 |
| 180 | 60 | 0.9 | 108 | 0.17 | 0.030 |
| 200 | 60 | 1.0 | 120 | 0.15 | 0.020 |
| 215 | 60 | 1.1 | 129 | 0.13 | 0.020 |
| 225 | 60 | 1.1 | 135 | 0.12 | 0.020 |
| 250 | 60 | 1.3 | 175 | 0.10 | 0.020 |
| 275 | 60 | 1.4 | 193 | 0.08 | 0.010 |
| 300 | 60 | 1.5 | 210 | 0.08 | 0.010 |
| 315 | 60 | 1.6 | 221 | 0.06 | 0.010 |
| 325 | 60 | 1.7 | 228 | 0.06 | 0.010 |
| 350 | 60 | 1.9 | 345 | 0.05 | 0.008 |
| 375 | 60 | 2.2 | 263 | 0.05 | 0.007 |
| 400 | 80 | 2.4 | 280 | 0.05 | 0.006 |
| 450 | 80 | 2.7 | 360 | 0.04 | 0.005 |
| 500 | 80 | 3.1 | 400 | 0.04 | 0.004 |
| 600 | 80 | 3.9 | 480 | 0.04 | 0.003 |
| 700 | 80 | 4.5 | 550 | 0.03 | 0.002 |
| 800 | 80 | 5.2 | 640 | 0.02 | 0.002 |
| 900 | 80 | 6.0 | 720 | 0.02 | 0.001 |