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                      SD型钻杆卡瓦适用的钻杆直径为2.3/8-7in(60.3-177.8mm),按卡瓦牙与钻杆的接触长度分为短型(SDS)、中型(SDML)和加长型(SDXL)。SDS适用于浅井、SDML适用于中深井、SDXL适用于深井。产品按API Spec 7K规范要求设计、制造。本系列卡瓦适用于石油及天然气钻井作业中,用于卡持钻杆,是供上扣或卸扣工作的必备工具。 
| 
 型号   | 
 卡瓦体尺寸   | 
 31/2   | 
 41/2   | 
 5   |  
| 
 SDS   | 
 钻杆直径   | 
 in   | 
 23/8   | 
 27/8   | 
 31/2   | 
 31/2   | 
 4   | 
 41/2   | 
 4   | 
 41/2   | 
 5   |  
| 
 mm  | 
 60.3  | 
 73.0  | 
 88.9  | 
 88.9  | 
 101.6  | 
 114.3  | 
 101.6  | 
 114.3  | 
 127  |  
| 
 重量  | 
 kg  | 
 53.1  | 
 50.3  | 
 48.5  | 
 64.9  | 
 61.7  | 
 57.6  | 
 
  | 
 
  | 
 
  |  
| 
 lb  | 
 117  | 
 111  | 
 107  | 
 143  | 
 136  | 
 127  | 
 
  | 
 
  | 
 
  |  
| 
 SDML   | 
 钻杆直径   | 
 in   | 
 23/8   | 
 27/8   | 
 31/2   | 
 31/2   | 
 4   | 
 41/2   | 
 4   | 
 41/2   | 
 5   |  
| 
 mm  | 
 60.3  | 
 73.0  | 
 88.9  | 
 88.9  | 
 101.6  | 
 114.3  | 
 101.6   | 
 114.3   | 
 127   |  
| 
 重量  | 
 kg  | 
 87.8  | 
 85.3  | 
 81.6  | 
 94  | 
 90.3  | 
 85.3  | 
 92.5   | 
 88.9   | 
 84   |  
| 
 lb  | 
 193  | 
 188  | 
 180  | 
 207  | 
 199  | 
 188  | 
 204   | 
 196   | 
 185   |  
| 
 SDXL   | 
 钻杆直径   | 
 in   | 
 -   | 
 -   | 
 -   | 
 31/2   | 
 4   | 
 41/2   | 
 4   | 
 41/2   | 
 5   |  
| 
 mm  | 
 -  | 
 -  | 
 -  | 
 88.9  | 
 101.6  | 
 114.3  | 
 101.6   | 
 114.3   | 
 127   |  
| 
 重量  | 
 kg  | 
 -  | 
 -  | 
 -  | 
 103.9  | 
 99.3  | 
 93  | 
 107.5   | 
 103   | 
 96.6   |  
| 
 lb  | 
 -  | 
 -  | 
 -  | 
 229  | 
 219  | 
 205  | 
 237   | 
 227   | 
 213   |  
| 
 型号   | 
 卡瓦体尺寸   | 
 51/2   | 
 57/8   | 
 7   |  
| 
 SDML   | 
 钻杆直径   | 
 in   | 
 41/2   | 
 5   | 
 51/2   | 
 53/4   | 
 57/8   | 
 -   | 
 57/8   | 
 65/8   | 
 7   |  
| 
 mm  | 
 114.3   | 
 127   | 
 139.7   | 
 -  | 
 -  | 
 -  | 
 -  | 
 -  | 
 -  |  
| 
 重量  | 
 kg  | 
 90.9   | 
 84   | 
 82.1   | 
 -  | 
 -  | 
 -  | 
 -  | 
 -  | 
 -  |  
| 
 lb  | 
 200   | 
 185   | 
 181   | 
 -  | 
 -  | 
 -  | 
 -  | 
 -  | 
 -  |  
| 
 SDXL   | 
 钻杆直径   | 
 in   | 
 41/2   | 
 5   | 
 51/2   | 
 5.3/4   | 
 5.7/8   | 
 
  | 
 5.7/8   | 
 6.5/8   | 
 7   |  
| 
 mm  | 
 114.3   | 
 127   | 
 139.7   | 
 146.1   | 
 149.2   | 
 
  | 
 149.2   | 
 168.3   | 
 177.8   |  
| 
 重量  | 
 kg  | 
 106.1   | 
 101.5   | 
 95.3   | 
 
  | 
 
  | 
 
  | 
 
  | 
 
  | 
 
  |  
| 
 lb  | 
 234   | 
 224   | 
 210   | 
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