带颈对焊管法兰内径尺寸(摘自HG/T 20615—2009) mm |
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公称尺寸 |
钢管 外径 A |
钢管壁厚规格 |
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DN |
NPS |
Sch.5S |
Sch.10S |
Sch.10 |
Sch.20 |
Sch.30 |
Sch.40S |
Sch.40 |
Sch.60 |
Sch.80S |
Sch.80 |
Sch.100 |
Sch.120 |
Sch.140 |
Sch.160 |
|
法兰内径B |
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15 |
½ |
21.3 |
18 |
17 |
— |
— |
— |
15.5 |
15.5 |
— |
14 |
14 |
— |
— |
— |
12 |
20 |
¾ |
26.9 |
23.5 |
22.5 |
— |
— |
— |
21 |
21 |
— |
18.5 |
18.5 |
— |
— |
— |
15.5 |
25 |
1 |
33.7 |
30.5 |
27.5 |
— |
— |
— |
27 |
27 |
— |
24.5 |
24.5 |
— |
— |
— |
21 |
32 |
1¼ |
42.4 |
39 |
36.5 |
— |
— |
— |
35 |
35 |
— |
32 |
32 |
— |
— |
— |
29.5 |
40 |
1½ |
48.3 |
45 |
42.5 |
— |
— |
— |
41 |
41 |
— |
38 |
38 |
— |
— |
— |
34 |
50 |
2 |
60.3 |
57 |
54.5 |
— |
53.5 |
— |
52 |
52 |
— |
49 |
49 |
— |
— |
— |
42.5 |
65 |
2½ |
76.1 |
72 |
69.5 |
— |
67 |
— |
66 |
66 |
— |
61.5 |
61.5 |
— |
— |
— |
56 |
80 |
3 |
88.9 |
84.5 |
82.5 |
— |
79.5 |
— |
77.5 |
77.5 |
— |
72.5 |
72.5 |
— |
— |
— |
66.5 |
100 |
4 |
114.3 |
110 |
107.5 |
— |
104 |
— |
101.5 |
101.5 |
— |
96.5 |
96.5 |
— |
92 |
— |
85.5 |
125 |
5 |
139.7 |
133.5 |
132.5 |
— |
129.5 |
— |
127 |
127 |
— |
119.5 |
119.5 |
— |
114.5 |
— |
107.5 |
150 |
6 |
168.3 |
162.5 |
161 |
— |
157 |
— |
154 |
154 |
— |
146 |
146 |
— |
139.5 |
— |
133 |
200 |
8 |
219.1 |
213 |
211 |
— |
206.5 |
204.5 |
203 |
203 |
199 |
194 |
194 |
187 |
184 |
179 |
174.5 |
250 |
10 |
273 |
265.5 |
265 |
— |
260 |
257 |
255 |
255 |
248 |
248 |
241 |
238 |
228.5 |
223 |
217 |
300 |
12 |
323.9 |
315.5 |
314.5 |
— |
311 |
306 |
303.5 |
303.5 |
295.5 |
298.5 |
288.5 |
279.5 |
273.5 |
267.5 |
259.5 |
350 |
14 |
355.6 |
347.5 |
345.5 |
343 |
339.5 |
335.5 |
335.5 |
335.5 |
323.5 |
330.5 |
315.5 |
305.5 |
299.5 |
291.5 |
283.5 |
400 |
16 |
406.4 |
398 |
396 |
393.5 |
390 |
386 |
386 |
381 |
371 |
381 |
362 |
350 |
346 |
334 |
326 |
450 |
18 |
457 |
449 |
447 |
444 |
441 |
435 |
437 |
428.5 |
417 |
432 |
407 |
397 |
385 |
377 |
367 |
500 |
20 |
508 |
498 |
496.5 |
495 |
488 |
483 |
488 |
476 |
468 |
483 |
452 |
444 |
428 |
418 |
408 |
550 |
22 |
559 |
549 |
547.5 |
546 |
539 |
534 |
539 |
— |
509 |
534 |
503 |
487 |
479 |
459 |
449 |
600 |
24 |
610 |
598.5 |
597 |
597 |
590 |
581.5 |
590 |
575 |
560 |
585 |
546 |
530 |
520 |
500 |
490 |
注:壁厚系列号(Sch.NO.)后缀加S者,仅用于奥氏体不锈钢钢管。 |