针形截止阀 内螺纹尺寸与公称尺寸的对应关系
公称尺寸
DN
3
6
10
15
20
25
螺纹尺寸
55℃
Rcl/8
Rcl/4
Rc3/8
Rcl/2
Rc3/4
Rcl
60℃
NPT1/8
NPT1/4
NPT3/8
NPT1/2
NPT3/4
NPT1
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