压力等级 Pressure rating |
公称通径DN |
法兰Flange |
对焊Butt |
≥H |
mm |
in |
L |
L1 |
1.6MPa
2.0MPa
(150)Lb |
15 |
1/2 |
108 |
140 |
75 |
20 |
3/4 |
117 |
152 |
80 |
25 |
1 |
127 |
165 |
88 |
32 |
1 3/4 |
140 |
178 |
105 |
40 |
1 1/2 |
165 |
190.5 |
95 |
50 |
2 |
178 |
216 |
130 |
65 |
2 1/2 |
190.5 |
241 |
145 |
80 |
3 |
203 |
283 |
191 |
100 |
4 |
229 |
305 |
200 |
125 |
5 |
356 |
381 |
225 |
150 |
6 |
394 |
457 |
245 |
200 |
8 |
457 |
521 |
285 | |
压力等级 Pressure rating |
公称通径DN |
法兰Flange |
对焊Butt |
≥H |
mm |
in |
L |
L1 |
2.5MPa
4.0MPa
5.0MPa
(300)Lb |
15 |
1/2 |
140 |
140 |
75 |
20 |
3/4 |
152 |
152 |
80 |
25 |
1 |
165 |
165 |
85 |
32 |
1 3/4 |
178 |
178 |
100 |
40 |
1 1/2 |
190.5 |
190.5 |
105 |
50 |
2 |
216 |
216 |
135 |
65 |
2 1/2 |
241 |
241 |
165 |
80 |
3 |
283 |
283 |
190 |
100 |
4 |
305 |
305 |
235 |
125 |
5 |
381 |
381 |
240 |
150 |
6 |
403 |
457 |
255 |
200 |
8 |
502 |
521 |
310 | |