刀杆(即导管),“外侧一道”螺纹型和“外侧四道”螺纹型,所有钻头配套的刀杆均采用合金钢制造,加工过程中经过热处理车和内外园磨及精制螺纹连接制成,长度订货时说明全长,各种孔径配刀杆,直径见钻头表格一览。
钻头直径范围(mm)
|
型号
|
27.00-29.99
|
HFSE024
|
30.00-31.99
|
HFSE026
|
37.00-39.99
|
HFSE033
|
40.00-43.99
|
HFSE036
|
44.00-46.99
|
HFSE039
|
47.00-51.99
|
HFSE043
|
52.00-56.99
|
HFSE047
|
57.00-60.99
|
HFSE051
|
61.00-67.99
|
HFSE056
|
68.00-74.99
|
HFSE062
|
75.00-80.99
|
HFSE068
|
81.00-90.99
|
HFSE075
|
91.00-98.99
|
HFSE082
|
99.00-110.99
|
HFSE094
|
111.00-122.99
|
HFSE106
|
123.00-134.00
|
HFSE118
|
135.00-148.99
|
HFSE130
|
149.00-161.99
|
HFSE142
|