规格型号Model
A型钻铤卡瓦A type Drill Collar Slip
钻铤尺寸Collar O.D.
in
3~4-1/2
3-1/4~4-3/4
4-1/4~5-3/4
5-1/2~7
6-3/4~8-1/4
8-1/4~10
10~11-3.4
