规格型号Model
WT 4-1/2~6
WT 5-1/2~7
WT 6-3/4~8-1/4
WT 8~9-1/2
钻铤尺寸Drill Collar O.D.
In
4-1/2~6
5-1/2~7
6-3/4~8-1/4
8~9-1/2
最大载荷Max. Capacity
