| Ei-magneettinen poran kaulusvaatimukset |
| Poran kaulusnumero | Od | Henkilöllisyystodistus | Pituus
mm | Olkapäätä halkaisija df
mm | Taivutuslujuus
|
| mm | sisä- | mm | sisä- |
| NC23-31 | 79.4 | 3 1/8 | 31.8 | 1 1/4 | 9150 | 76.2 | 2,57: 1 |
| NC26-35 | 88.9 | 3 1/2 | 38.1 | 1 1/2 | 9150 | 82.9 | 2.42: 1 |
| NC31-41 | 104.8 | 4 1/8 | 50.8 | 2 | 9150or9450 | 100.4 | 2.43: 1 |
| NC35-47 | 120.7 | 4 3/4 | 50.8 | 2 | 9150or9450 | 114.7 | 2,58: 1 |
| NC38-50 | 127 | 5 | 57.2 | 2 1/4 | 9150or9450 | 121 | 2,38: 1 |
| NC44-60 | 152.4 | 6 | 57.2 | 2 1/4 | 9150or9450 | 144.5 | 2,49: 1 |
| NC44-60 | 152.4 | 6 | 71.4 | 2 13/16 | 9150or9450 | 144.5 | 2,84: 1 |
| NC44-62 | 158.8 | 6 1/4 | 57.2 | 2 1/4 | 9150or9450 | 149.2 | 2,91: 1 |
| NC46-62 | 158.8 | 6 1/4 | 71.4 | 2 13/16 | 9150or9450 | 150 | 2,63: 1 |
| NC46-65 | 165.1 | 6 1/2 | 57.2 | 2 1/4 | 9150or9450 | 154.8 | 2,76: 1 |
| NC46-65 | 165.1 | 6 1/2 | 71.4 | 2 13/16 | 9150or9450 | 154.8 | 3.05: 1 |
| NC46-67 | 171.4 | 6 3/4 | 57.2 | 2 1/4 | 9150or9450 | 159.5 | 3.18: 1 |
| NC50-67 | 171.4 | 6 3/4 | 71.4 | 2 13/16 | 9150or9450 | 159.5 | 2,37: 1 |
| NC50-70 | 177.8 | 7 | 57.2 | 2 1/4 | 9150or9450 | 164.7 | 2,54: 1 |
| NC50-70 | 177.8 | 7 | 71.4 | 2 13/16 | 9150or9450 | 164.7 | 2,73: 1 |
| NC50-72 | 184.2 | 7 1/4 | 71.4 | 2 13/16 | 9150or9450 | 169.5 | 3.12: 1 |
| NC56-77 | 196.8 | 7 3/4 | 71.4 | 2 13/16 | 9150or9450 | 185.3 | 2,70: 1 |
| NC56-80 | 203.2 | 8 | 71.4 | 2 13/16 | 9150or9450 | 190.1 | 3.02: 1 |
| 65/8REG | 208.6 | 8 1/4 | 71.4 | 2 13/16 | 9150or9450 | 195.7 | 2,93: 1 |
| NC61-90 | 228.6 | 9 | 71.4 | 2 13/16 | 9150or9450 | 212.7 | 3.17: 1 |
| 75/8REG | 241.3 | 9 1/2 | 76.2 | 3 | 9150or9450 | 223.8 | 2,81: 1 |
| NC70-97 | 247.6 | 9 3/4 | 76.2 | 3 | 9150or9450 | 232.6 | 2,57: 1 |
| NC70-100 | 254 | 10 | 76.2 | 3 | 9150or9450 | 237.3 | 2,81: 1 |
| 85/8REG | 279.4 | 11 | 76.2 | 3 | 9150or9450 | 266.7 | 2,84: 1 |
| Ei-magneettisten porakaulusten mekaaniset ominaisuudet |
| Od | Tuottolujuus | Vetolujuus | Pidennys | Kutistuminen | Kovuus | Vaikuttaa AKV |
| mm | sisä- | Ksi | MPA | Ksi | MPA | Prosentti | Prosentti | HB | J - |
| ≤180 | ≤7 | ≥120 | ≥828 | ≥135 | ≥931 | ≥25 | ≥50 | 285-360 | ≥75 |
| > 180 | > 7 | ≥110 | ≥759 | ≥130 | ≥897 | ≥25 | ≥50 | 285-360 | ≥75 |
Magneettiset ominaisuudet (magneettikenttä = 1x10³/4πa/m)
1.Merenge: μr <1,010.
2.Magneettinen kenttägradientti: △ B≤0,05 μt.
