collar de perforación
Tamaño del soporte y conexión roscada
| OD | ID | Longitud mm | Diámetro del chaflán mm | Conexión de rosca | Ración de mezcla | ||
| In | mm | in | mm | ||||
| 3-1/8 | 79.4 | 1-1/4 | 31.8 | 9150 | 76.2 | NC23-31 | 2,57:1 |
| 3-1/2 | 88,9 | 1-1/2 | 38.1 | 9150 | 82,9 | NC26-35 (238 identificación) | 2,42:1 |
| 4-1/8 | 104.8 | 2 | 50.8 | 9150 | 100.4 | NC31-41 (278 SI) | 2,43:1 |
| 4-3/4 | 120.7 | 2 | 50.8 | 9150 | 114.7 | NC35-47 | 2,58:1 |
| 5 | 127 | 2-1/4 | 57.2 | 9150 | 121.0 | NC38-50 (312 SI) | 2,38:1 |
| 6 | 152.4 | 2-1/4 | 57.2 | 9150 o 9450 | 144.5 | NC44-60 | 2,49:1 |
| 6 | 152.4 | 2 | 71.4 | 9150 o 9450 | 144.5 | NC44-60 | 2,84:1 |
| 6-1/4 | 158.8 | 2-1/4 | 57.2 | 9150 o 9450 | 149.2 | NC44-62 | 2,91:1 |
| 6-1/4 | 158.8 | 2-13/16 | 71.4 | 9150 o 9450 | 150.0 | NC44-62(4IF) | 2,63:1 |
| 6-1/2 | 165.1 | 2-1/4 | 57.2 | 9150 o 9450 | 154.8 | NC44-65(4IF) | 2,76:1 |
| 6-1/2 | 165.1 | 2-13/16 | 71.4 | 9150 o 9450 | 154.8 | NC44-65(4IF) | 3,05:1 |
| 6-3/4 | 171.4 | 2-1/4 | 57.2 | 9150 o 9450 | 159.5 | NC44-67(4IF) | 3,18:1 |
| 6-3/4 | 171.4 | 2-13/16 | 71.4 | 9150 o 9450 | 159.5 | NC50-67 (412 SI) | 2,37:1 |
| 7 | 177.8 | 2-1/4 | 57.2 | 9150 o 9450 | 164.7 | NC50-70 (412 SI) | 2,54:1 |
| 7 | 177.8 | 2-13/16 | 71.4 | 9150 o 9450 | 164.7 | NC50-70 (412 SI) | 2,73:1 |
| 7-1/4 | 184.2 | 2-13/16 | 71.4 | 9150 o 9450 | 169.5 | NC50-72 (412 SI) | 3,12:1 |
| 7-3/4 | 196.8 | 2-13/16 | 71.4 | 9150 o 9450 | 185.3 | NC56-77 | 2,70:1 |
| 8 | 203.2 | 2-13/16 | 71.4 | 9150 o 9450 | 190.1 | NC56-80 | 3,02:1 |
| 8-1/4 | 209.6 | 2-13/16 | 71.4 | 9150 o 9450 | 195.7 | 658 REGISTRO | 2,93:1 |
| 9 | 228.6 | 2-13/16 | 71.4 | 9150 o 9450 | 212.7 | NC61-90 | 3,17:1 |
| 9-1/2 | 241.3 | 3 | 76.2 | 9150 o 9450 | 223.8 | 758 Reg. | 2,81:1 |
| 9-3/4 | 247.6 | 3 | 76.2 | 9150 o 9450 | 232.6 | NC70-97 | 2,57:1 |
| 10 | 254 | 3 | 76.2 | 9150 o 9450 | 237.3 | NC70-100 | 2,81:1 |
| 11 | 279.4 | 3 | 76.2 | 9150 o 9450 | 266.7 | 858 REGISTRO | 2,84:1 |
Tipo espiral
Estar hecho de acero aleado y el tubo exterior tiene ranuras en espiral.
| OD | Límite elástico MPa | Resistencia a la tracción MPa | Alargamiento% | Dureza Brinell HB | Impacto APV J | |
| mm | in | |||||
| 79,4-171,4 | 3 1/8-6 3/4 | ≥758 | ≥965 | ≥13 | 285-341 | ≥54 |
| 177,8-279,4 | 7-11 | ≥689 | ≥930 | ≥13 | 285-341 | ≥54 |
PROPIEDAD DEL COLLARÍN DE TALADRO NO MAGNÉTICO
Hecho de acero de aleación inoxidable con permeabilidad magnética bastante baja y las secciones transversales
de la tubería interior y exterior son redondas
| OD | Límite elástico MPa | Resistencia a la tracción MPa | Alargamiento% | Dureza Brinell HB | Impacto APV J | |
| mm | in | |||||
| 79,4-171,4 | 3 1/8-6 3/4 | ≥758 | ≥827 | ≥18 | - | - |
| 177.6-279.4 | 7-11 | ≥689 | ≥758 | ≥20 | - | - |
