一>钢管最大许用压力（参考第四强度公式）
P=C×[σ]×(K2-1)/(√3K2)
1，P(MPa)：钢管最大工作压力；
2，[σ](MPa)：钢管材质许用应力，304、316常温下[σ]为137MPa；
3，K=D÷d（D：钢管外径 d：钢管内径）；
4，C=0.9，壁厚附加系数
二>不锈钢304、316无缝钢管壁厚——耐压表
|
钢管内径
[mm]
|
钢管壁厚[mm]
|
|
0.5
|
1
|
1.5
|
2
|
2.5
|
3
|
3.5
|
4
|
5
|
6
|
8
|
10
|
12
|
|
最大工作压力[bar]
|
|
1.0
|
534
|
633
|
667
|
683
|
692
|
|
|
|
|
|
|
|
|
|
1.5
|
456
|
581
|
633
|
659
|
674
|
683
|
|
|
|
|
|
|
|
|
2.0
|
395
|
534
|
598
|
633
|
654
|
667
|
677
|
683
|
|
|
|
|
|
|
2.5
|
349
|
492
|
565
|
607
|
633
|
650
|
663
|
672
|
683
|
|
|
|
|
|
3.0
|
311
|
456
|
534
|
581
|
612
|
633
|
648
|
659
|
674
|
683
|
|
|
|
|
4.0
|
256
|
395
|
479
|
534
|
571
|
598
|
618
|
633
|
654
|
667
|
683
|
692
|
|
|
5.0
|
218
|
349
|
434
|
492
|
534
|
565
|
588
|
607
|
633
|
650
|
672
|
683
|
|
|
6.0
|
189
|
311
|
395
|
456
|
500
|
534
|
560
|
581
|
612
|
633
|
659
|
674
|
683
|
|
7.0
|
167
|
281
|
363
|
424
|
470
|
505
|
534
|
557
|
591
|
615
|
646
|
664
|
676
|
|
8.0
|
149
|
256
|
335
|
395
|
442
|
479
|
509
|
534
|
571
|
598
|
633
|
654
|
667
|
|
9.0
|
135
|
235
|
311
|
371
|
418
|
456
|
487
|
512
|
552
|
581
|
620
|
643
|
659
|
|
10.0
|
124
|
218
|
291
|
349
|
395
|
434
|
466
|
492
|
534
|
565
|
607
|
633
|
650
|
|
11.0
|
114
|
202
|
272
|
329
|
375
|
414
|
446
|
473
|
517
|
549
|
594
|
622
|
642
|
|
12.0
|
105
|
189
|
256
|
311
|
357
|
395
|
428
|
456
|
500
|
534
|
581
|
612
|
633
|
|
13.0
|
98
|
177
|
242
|
296
|
341
|
379
|
411
|
439
|
484
|
519
|
569
|
601
|
624
|
|
14.0
|
92
|
167
|
229
|
281
|
325
|
363
|
395
|
424
|
470
|
505
|
557
|
591
|
615
|
|
15.0
|
86
|
158
|
218
|
268
|
311
|
349
|
381
|
409
|
456
|
492
|
545
|
581
|
607
|
|
16.0
|
81
|
149
|
207
|
256
|
299
|
335
|
367
|
395
|
442
|
479
|
534
|
571
|
598
|
|
17.0
|
77
|
142
|
198
|
245
|
287
|
323
|
355
|
383
|
430
|
467
|
523
|
562
|
589
|
|
18.0
|
73
|
135
|
189
|
235
|
276
|
311
|
343
|
371
|
418
|
456
|
512
|
552
|
581
|
|
19.0
|
69
|
129
|
181
|
226
|
266
|
301
|
332
|
359
|
406
|
444
|
502
|
543
|
573
|
|
20.0
|
66
|
124
|
174
|
218
|
256
|
291
|
321
|
349
|
395
|
434
|
492
|
534
|
565
|
|
21.0
|
63
|
118
|
167
|
210
|
247
|
281
|
311
|
339
|
385
|
424
|
483
|
525
|
557
|
|
22.0
|
61
|
114
|
161
|
202
|
239
|
272
|
302
|
329
|
375
|
414
|
473
|
517
|
549
|
|
23.0
|
58
|
109
|
155
|
195
|
232
|
264
|
293
|
320
|
366
|
404
|
464
|
508
|
541
|
|
24.0
|
56
|
105
|
149
|
189
|
224
|
256
|
285
|
311
|
357
|
395
|
456
|
500
|
534
|
|
25.0
|
54
|
102
|
144
|
183
|
218
|
249
|
277
|
303
|
349
|
387
|
447
|
492
|
527
|
|
26.0
|
52
|
98
|
140
|
177
|
211
|
242
|
270
|
296
|
341
|
379
|
439
|
484
|
519
|
|
27.0
|
50
|
95
|
135
|
172
|
205
|
235
|
263
|
288
|
333
|
371
|
431
|
477
|
512
|
|
28.0
|
48
|
92
|
131
|
167
|
199
|
229
|
256
|
281
|
325
|
363
|
424
|
470
|
505
|
|
29.0
|
47
|
89
|
127
|
162
|
194
|
223
|
250
|
275
|
318
|
356
|
416
|
463
|
499
|
|
30.0
|
45
|
86
|
124
|
158
|
189
|
218
|
244
|
268
|
311
|
349
|
409
|
456
|
492
|
|
31.0
|
44
|
84
|
120
|
153
|
184
|
212
|
238
|
262
|
305
|
342
|
402
|
449
|
486
|
|
32.0
|
43
|
81
|
117
|
149
|
179
|
207
|
233
|
256
|
299
|
335
|
395
|
442
|
479
|
|
33.0
|
41
|
79
|
114
|
146
|
175
|
202
|
227
|
251
|
293
|
329
|
389
|
436
|
473
|
|
34.0
|
40
|
77
|
111
|
142
|
171
|
198
|
222
|
245
|
287
|
323
|
383
|
430
|
467
|
|
35.0
|
39
|
75
|
108
|
139
|
167
|
193
|
218
|
240
|
281
|
317
|
377
|
424
|
461
|
|
36.0
|
38
|
73
|
105
|
135
|
163
|
189
|
213
|
235
|
276
|
311
|
371
|
418
|
456
|
|
37.0
|
|
71
|
103
|
132
|
159
|
185
|
208
|
231
|
271
|
306
|
365
|
412
|
450
|
|
38.0
|
|
69
|
100
|
129
|
156
|
181
|
204
|
226
|
266
|
301
|
359
|
406
|
444
|
|
39.0
|
|
68
|
98
|
126
|
153
|
177
|
200
|
222
|
261
|
296
|
354
|
401
|
439
|
|
40.0
|
|
66
|
96
|
124
|
149
|
174
|
196
|
218
|
256
|
291
|
349
|
395
|
434
|
|
42.0
|
|
63
|
92
|
118
|
143
|
167
|
189
|
210
|
247
|
281
|
339
|
385
|
424
|
|
44.0
|
|
61
|
88
|
114
|
138
|
161
|
182
|
202
|
239
|
272
|
329
|
375
|
414
|
|
46.0
|
|
58
|
84
|
109
|
133
|
155
|
176
|
195
|
232
|
264
|
320
|
366
|
404
|
|
48.0
|
|
56
|
81
|
105
|
128
|
149
|
170
|
189
|
224
|
256
|
311
|
357
|
395
|
|
50.0
|
|
54
|
78
|
102
|
124
|
144
|
164
|
183
|
218
|
249
|
303
|
349
|
387
|
|
52.0
|
|
52
|
76
|
98
|
119
|
140
|
159
|
177
|
211
|
242
|
296
|
341
|
379
|
|
54.0
|
|
50
|
73
|
95
|
116
|
135
|
154
|
172
|
205
|
235
|
288
|
333
|
371
|
|
56.0
|
|
|
71
|
92
|
112
|
131
|
149
|
167
|
199
|
229
|
281
|
325
|
363
|
|
58.0
|
|
|
68
|
89
|
109
|
127
|
145
|
162
|
194
|
223
|
275
|
318
|
356
|
|
60.0
|
|
|
66
|
86
|
105
|
124
|
141
|
158
|
189
|
218
|
268
|
311
|
349
|
|
62.0
|
|
|
64
|
84
|
102
|
120
|
137
|
153
|
184
|
212
|
262
|
305
|
342
|
|
65.0
|
|
|
61
|
80
|
98
|
115
|
132
|
148
|
177
|
205
|
253
|
296
|
332
|
|
70.0
|
|
|
57
|
75
|
92
|
108
|
124
|
139
|
167
|
193
|
240
|
281
|
317
|
|
72.0
|
|
|
56
|
73
|
89
|
105
|
121
|
135
|
163
|
189
|
235
|
276
|
311
|
|
75.0
|
|
|
54
|
70
|
86
|
102
|
116
|
131
|
158
|
183
|
228
|
268
|
303
|
|
80.0
|
|
|
51
|
66
|
81
|
96
|
110
|
124
|
149
|
174
|
218
|
256
|
291
|
|
82.0
|
|
|
|
65
|
80
|
94
|
108
|
121
|
146
|
170
|
213
|
252
|
286
|
|
85.0
|
|
|
|
63
|
77
|
91
|
104
|
117
|
142
|
165
|
208
|
245
|
279
|
|
90.0
|
|
|
|
59
|
73
|
86
|
99
|
111
|
135
|
158
|
199
|
235
|
268
|
|
92.0
|
|
|
|
58
|
71
|
84
|
97
|
109
|
133
|
155
|
195
|
232
|
264
|
|
95.0
|
|
|
|
56
|
69
|
82
|
94
|
106
|
129
|
151
|
190
|
226
|
258
|
|
100.0
|
|
|
|
54
|
66
|
78
|
90
|
102
|
124
|
144
|
183
|
218
|
249
|
|
105.0
|
|
|
|
51
|
63
|
75
|
86
|
97
|
118
|
139
|
176
|
210
|
240
|
|
110.0
|
|
|
|
|
61
|
72
|
83
|
93
|
114
|
133
|
169
|
202
|
232
|
|
115.0
|
|
|
|
|
58
|
69
|
79
|
90
|
109
|
128
|
163
|
195
|
225
|
|
120.0
|
|
|
|
|
56
|
66
|
76
|
86
|
105
|
124
|
158
|
189
|
218
|
|
125.0
|
|
|
|
|
54
|
64
|
73
|
83
|
102
|
119
|
152
|
183
|
211
|
|
130.0
|
|
|
|
|
52
|
61
|
71
|
80
|
98
|
115
|
148
|
177
|
205
|
|
135.0
|
|
|
|
|
50
|
59
|
69
|
77
|
95
|
111
|
143
|
172
|
199
|
|
140.0
|
|
|
|
|
|
57
|
66
|
75
|
92
|
108
|
139
|
167
|
193
|
|
145.0
|
|
|
|
|
|
55
|
64
|
73
|
89
|
105
|
134
|
162
|
188
|
|
150.0
|
|
|
|
|
|
54
|
62
|
70
|
86
|
102
|
131
|
158
|
183
|
|
155.0
|
|
|
|
|
|
52
|
60
|
68
|
84
|
99
|
127
|
153
|
178
|
|
160.0
|
|
|
|
|
|
51
|
58
|
66
|
81
|
96
|
124
|
149
|
174
|
|
165.0
|
|
|
|
|
|
|
57
|
64
|
79
|
93
|
120
|
146
|
169
|
|
170.0
|
|
|
|
|
|
|
55
|
63
|
77
|
91
|
117
|
142
|
165
|
|
175.0
|
|
|
|
|
|
|
54
|
61
|
75
|
88
|
114
|
139
|
161
|
|
180.0
|
|
|
|
|
|
|
52
|
59
|
73
|
86
|
111
|
135
|
158
|
|
185.0
|
|
|
|
|
|
|
51
|
58
|
71
|
84
|
109
|
132
|
154
|
|
190.0
|
|
|
|
|
|
|
50
|
56
|
69
|
82
|
106
|
129
|
151
|
|
195.0
|
|
|
|
|
|
|
|
55
|
68
|
80
|
104
|
126
|
148
|
|
200.0
|
|
|
|
|
|
|
|
54
|
66
|
78
|
102
|
124
|
144
|
