非磁性ドリルカラーとは、傾斜掘削・水平掘削の際に地磁気を測定し位置情報を把握するための、磁性を持たない特殊なドリルカラーです。非磁性ドリルカラーには測定用の電子機器が埋め込まれます。
| C | Mn | Ni | Cr | Mo | N |
|---|---|---|---|---|---|
| 0.04 | 15.0 | 3.0 | 18.0 | 0.8 | 0.44 |
| 素材外径 mm |
耐力 Mpa(psi) |
引張強さ Mpa(psi) |
伸び % |
|---|---|---|---|
| 70～98.4 | ≧827(120,000) | ≧896(130,000) | ≧13 |
| 101.6～174.6 | ≧758(110,000) | ≧827(120,000) | 〃 |
| 177.8～ 279.4 | ≧689(100,000) | ≧758(110,000) | 〃 |
| 耐力範囲 Mpa |
吸収エネルギー |
|---|---|
690～970 Mpa |
≧81j |
| 970～110 Mpa | ≧68j |
| >～1100 Mpa | ≧54j |
規格：μ≦1.010
ドリルカラー形状及び寸法
| 呼称番号 | 外径 | 内径 | 長さ | 重量 | ベベル径 | ＢＳＲ（参考） | ||
|---|---|---|---|---|---|---|---|---|
| ㎜ | ｉｎ | ㎜ | ｉｎ | ｍ ft |
Kg／m | ㎜ | ||
| NC31-41 | 104.8 | 4-1/8" | 50.8 | 2" | 9.14 or9.45 30' or 31' |
52.1 | 100.4 | 2.43 : 1 |
| NC35-47 | 120.6 | 4-3/4" | 50.8 | 2" | 〃 | 74.5 | 114.7 | 2.58 :1 |
| NC38-47 | 120.6 | 4-3/4" | 57.2 | 2-1/4" | 〃 | 70 | 116.3 | 1.92 :1 |
| NC38-47 | 120.6 | 4-3/4" | 63.5 | 2-1/2" | 〃 | 65.5 | 116.3 | 2.10 :1 |
| NC38-50 | 127.0 | 5" | 57.2 | 2-1/4" | 〃 | 78.9 | 121.0 | 2.38 :1 |
| NC46-62 | 158.8 | 6-1/4" | 57.2 | 2-1/4" | 〃 | 135.5 | 150.0 | 2.38 :1 |
| NC46-62 | 158.8 | 6-1/4" | 63.5 | 2-1/2" | 〃 | 131.1 | 150.0 | 2.47 :1 |
| NC46-62 | 158.8 | 6-1/4" | 71.4 | 2-13/16" | 〃 | 123.6 | 150.0 | 2.63 :1 |
| NC46-65 | 165.1 | 6-1/2" | 57.2 | 2-1/4" | 〃 | 147.5 | 154.8 | 2.76 :1 |
| NC46-65 | 165.1 | 6-1/2" | 63.5 | 2-1/2" | 〃 | 143 | 154.8 | 2.87 :1 |
| NC46-65 | 165.1 | 6-1/2" | 71.4 | 2-13/16" | 〃 | 135.5 | 154.8 | 3.05 :1 |
| NC50-65 | 165.1 | 6-1/2" | 57.2 | 2-1/4" | 〃 | 147.5 | 155.2 | 1.89 :1 |
| NC50-65 | 165.1 | 6-1/2" | 71.4 | 2-13/16" | 〃 | 135.5 | 155.2 | 2.02 :1 |
| NC46-67 | 171.4 | 6-3/4" | 57.2 | 2-1/4" | 〃 | 156.4 | 159.5 | 3.18 :1 |
| NC50-67 | 171.4 | 6-3/4" | 57.2 | 2-1/4" | 〃 | 156.4 | 159.9 | 2.20 :1 |
| NC50-67 | 171.4 | 6-3/4" | 71.4 | 2-13/16" | 〃 | 149 | 159.9 | 2.37 :1 |
| NC50-70 | 177.8 | 7" | 57.2 | 2-1/4" | 〃 | 174.3 | 164.7 | 2.54 :1 |
| NC50-70 | 177.8 | 7" | 71.4 | 2-13/16" | 〃 | 163.8 | 164.7 | 2.73 :1 |
| NC50-72 | 184.2 | 7-1/4" | 71.4 | 2-13/16" | 〃 | 177.3 | 169.5 | 3.12 :1 |
| 6-5/8REG | 203.2 | 8" | 71.4 | 2-13/16" | 〃 | 223.4 | 190.9 | 2.60 :1 |
| 6-5/8REG | 203.2 | 8" | 76.2 | 3" | 〃 | 219 | 190.9 | 2.66 :1 |
| 6-5/8REG | 209.6 | 8-1/4" | 71.4 | 2-13/16" | 〃 | 238.3 | 195.6 | 2.93 :1 |
| 7-5/8REG | 228.6 | 9" | 71.4 | 2-13/16" | 〃 | 290.5 | 214.3 | 2.28 :1 |
| NC61-90 | 228.6 | 9" | 71.4 | 2-13/16" | 〃 | 290.5 | 212.7 | 3.17 :1 |
| 7-5/8REG | 228.6 | 9" | 76.2 | 3" | 〃 | 286 | 214.3 | 2.30 :1 |
| 7-5/8REG | 241.3 | 9-1/2" | 71.4 | 2-13/16" | 〃 | 327.7 | 223.8 | 2.78 :1 |
| 7-5/8REG | 241.3 | 9-1/2" | 76.2 | 3" | 〃 | 321.7 | 223.8 | 2.81 :1 |
| 8-5/8REG | 254.0 | 10" | 76.2 | 3" | 〃 | 361.9 | 241.7 | 1.98 :1 |
