六刀翼中拋物線輪廓，特殊的刀削結構，
bit size(in)
nozzle (pc)
gage length(mm)
api
api connection(in)
7-1/2
6
50
4-1/2
8-1/2
6
65
4-1/2
9-1/2
8
85
6-5/8
speed
(1/s)
(gpm)
(rpm)
(kn)
(klbs)
25-35
400-500
50-260
30-100
7-23
25-35
400-500
50-260
30-100
7-23
35-44
500-700
50-260
50-120
10-12
bit size(in)
nozzle (pc)
gage length(mm)
api
api connection(in)
7-7/8
5
50
4-1/2
8-1/2
5
60
4-1/2
12-1/4
7
90
6-5/8
speed
(1/s)
(gpm)
(rpm)
(kn)
(klbs)
25-35
400-550
50-250
30-100
7-23
25-35
400-550
50-250
30-100
7-23
44-60
700-950
50-250
50-160
11-40
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