Main technical parameters:
| Specification | NC23-31～NC70-100 |
| All series of API specifications | |
| Executive standard | API Spec 7-1 API Spec 7-2 |
| SIZE | OD | ID | Lmm | Shoulder chamfering diameter | Bending strength ratio of the reference | ||
| mm | In | mm | in | ||||
| NC31-41(2-7/8IF) | 104.8 | 2004/1/8 | 50.8 | 2 | 9150 | 100.4 | 2.43:1 |
| NC35-47 | 120.7 | 2004/3/4 | 50.8 | 2 | 9150 | 114.7 | 2.58:1 |
| NC38-50(3-1/2IF) | 127 | 5 | 57.2 | 2002/1/4 | 9150 | 121 | 2.38:1 |
| NC44-60 | 152.4 | 6 | 57.2 | 2002/1/4 | 9150/9450 | 144.5 | 2.49:1 |
| NC44-60 | 152.4 | 6 | 71.4 | 2-13/16 | 9150/9450 | 144.5 | 2.84:1 |
| NC44-62 | 158.8 | 2006/1/4 | 57.2 | 2002/1/4 | 9150/9450 | 149.2 | 2.91:1 |
| NC46-62(4IF) | 158.8 | 2006/1/4 | 71.4 | 2-13/16 | 9150/9450 | 150 | 2.63:1 |
| NC46-65(4IF) | 165.1 | 2006/1/2 | 57.2 | 2002/1/4 | 9150/9450 | 154.8 | 2.76:1 |
| NC46-65(4IF) | 165.1 | 2006/1/2 | 71.4 | 2-13/16 | 9150/9450 | 154.8 | 3.05:1 |
| NC46-67(4IF) | 171.4 | 2006/3/4 | 57.2 | 2002/1/4 | 9150/9450 | 159.5 | 3.18:1 |
| NC50-67(4-1/2IF) | 171.4 | 2006/3/4 | 71.4 | 2-13/16 | 9150/9450 | 159.5 | 2.37:1 |
| NC50-70(4-1/2IF) | 177.8 | 7 | 57.2 | 2002/1/4 | 9150/9450 | 164.7 | 2.54:1 |
| NC50-70(4-1/2IF) | 177.8 | 7 | 71.4 | 2-13/16 | 9150/9450 | 164.7 | 2.73:1 |
| NC50-72(4-1/2IF) | 184.2 | 2007/1/4 | 71.4 | 2-13/16 | 9150/9450 | 169.5 | 3.12:1 |
| NC56-77 | 196.8 | 2007/3/4 | 71.4 | 2-13/16 | 9150/9450 | 185.3 | 2.70:1 |
| NC56-80 | 203.2 | 8 | 71.4 | 2-13/16 | 9150/9450 | 190.1 | 3.02:1 |
| 6-5/8REG | 209.6 | 2008/1/4 | 71.4 | 2-13/16 | 9150/9450 | 195.7 | 2.93:1 |
| NC61-90 | 228.6 | 9 | 71.4 | 2-13/16 | 9150/9450 | 212.7 | 3.17:1 |
| 7-5/8REG | 241.3 | 2009/1/2 | 76.2 | 3 | 9150/9450 | 223.8 | 2.81:1 |
| NC70-97 | 247.6 | 2009/3/4 | 76.2 | 3 | 9150/9450 | 232.6 | 2.57:1 |
| NC70-100 | 254 | 10 | 76.2 | 3 | 9150/9450 | 237.3 | 2.81:1 |
Copyright © Shandong Beyond Petroleum Equipment Co., Ltd. All Rights Reserved | Powered by 
