钻杆卡瓦适用的钻杆直径为23/8 to 51/2 inch（60.3-139.7mm），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。
|
型号 |
卡瓦体尺寸 |
31/2 |
41/2 |
|
SDS |
钻杆直径 |
In |
23/8 |
27/8 |
31/2 |
31/2 |
4 |
41/2 |
|
mm |
60.3 |
73.0 |
88.9 |
88.9 |
101.6 |
114.3 |
|
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 |
|
Mm |
60.3 |
73.0 |
88.9 |
88.9 |
101.6 |
114.3 |
|
重量 |
Kg |
87.5 |
85.3 |
81.6 |
94 |
90.3 |
85.3 |
|
lb |
193 |
188 |
180 |
207 |
199 |
188 |
|
SDXL |
钻杆直径 |
In |
|
|
|
31/2 |
4 |
41/2 |
|
Mm |
|
|
|
88.9 |
101.6 |
114.3 |
|
重量 |
Kg |
|
|
|
103.9 |
99.3 |
93 |
|
lb |
|
|
|
229 |
219 |
205 |
|
型号 |
卡瓦体尺寸 |
5 |
51/2 |
|
SDML |
钻杆直径 |
In |
4 |
41/2 |
5 |
41/2 |
5 |
51/2 |
|
Mm |
101.6 |
114.3 |
127 |
114.3 |
127 |
139.7 |
|
重量 |
Kg |
92.5 |
88.9 |
84 |
90.9 |
84 |
82.1 |
|
Lb |
204 |
196 |
185 |
200 |
185 |
181 |
|
SDXL |
钻杆直径 |
In |
4 |
41/2 |
5 |
41/2 |
5 |
51/2 |
|
Mm |
101.6 |
114.3 |
127 |
114.3 |
127 |
139.7 |
|
重量 |
Kg |
107.2 |
103 |
96.6 |
106.1 |
101.5 |
95.3 |
|
lb |
237 |
227 |
213 |
234 |
224 |
210 |
