DU型鉆桿卡瓦
DU系列轉(zhuǎn)盤卡瓦由DU型、DUL型和SDU型三大種型式的轉(zhuǎn)盤卡瓦組成，該卡瓦的扣合范圍廣、重量輕，其中SDU型卡瓦被錐接觸面大、強(qiáng)度高、耐磨性好。產(chǎn)品按API Spec7K規(guī)范要求設(shè)計(jì)、制造。
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| 型號(hào) Model | 卡瓦體尺寸 Size of Slip bodies | 4% | |||||
| DU | 鉆桿直徑 DP OD | in | 23/8 | 2% | 3% | 4 | 4% |
| mm | 60.3 | 73.0 | 88.9 | 101.6 | 114.3 | ||
| DUL | 鉆桿直徑 DP OD | in | 23/8 | 2% | 3% | 4 | 4% |
| mm | 60.3 | 73.0 | 88.9 | 101.6 | 114.3 | ||
| SDU | 鉆桿直徑 DP OD | in | - | - | - | - | - |
| mm | - | - | - | - | - | ||
| 型號(hào) Model | 卡瓦體尺寸 Size of Slip bodies | 5% | |||||
| DU | 鉆桿直徑 DP OD | in | 3% | 4 | 4% | 5 | 5% |
| mm | 88.9 | 101.6 | 114.3 | 127 | 139.7 | ||
| DUL | 鉆桿直徑 DP OD | in | 3% | 4 | 4% | 5 | 5% |
| mm | 88.9 | 101.6 | 114.3 | 127 | 139.7 | ||
| SDU | 鉆桿直徑 DP OD | in | 3% | 4 | 4% | 5 | 5% |
| mm | 88.9 | 101.6 | 114.3 | 127 | 139.7 | ||
| 型號(hào) Model | 卡瓦體尺寸 Size of Slip bodies | 7% | |||||
| DU | 鉆桿直徑 DP OD | in | 4% | 5 | 5% | 6% | 7 |
| mm | 114.3 | 127 | 139.7 | 168.3 | 177.8 | ||
| DUL | 鉆桿直徑 DP OD | in | - | - | - | - | - |
| mm | - | - | - | - | - | ||
| SDU | 鉆桿直徑 DP OD | in | 4% | 5 | 5% | 6% | 7 |
| mm | 114.3 | 127 | 139.7 | 168.3 | 177.8 | ||
