32*3.5的中低压锅炉管一米多重；中低压锅炉管米重表
|
单位：Kg/m
|
壁 厚
|
|
外 径
|
3
|
3.5
|
4
|
4.5
|
5
|
5.5
|
6
|
|
32
|
2.146
|
2.460
|
2.762
|
3.052
|
3.329
|
3.594
|
3.847
|
|
38
|
2.589
|
2.978
|
3.354
|
3.718
|
4.069
|
4.408
|
4.735
|
|
42
|
2.885
|
3.323
|
3.749
|
4.162
|
4.562
|
4.951
|
5.327
|
|
45
|
3.107
|
3.582
|
4.044
|
4.495
|
4.932
|
5.358
|
5.771
|
|
50
|
3.477
|
4.014
|
4.538
|
5.049
|
5.549
|
6.036
|
6.511
|
|
54
|
3.773
|
4.359
|
4.932
|
5.493
|
6.042
|
6.578
|
7.103
|
|
57
|
3.995
|
4.618
|
5.228
|
5.826
|
6.412
|
6.985
|
7.546
|
|
60
|
4.217
|
4.877
|
5.524
|
6.159
|
6.782
|
7.392
|
7.990
|
|
63.5
|
4.476
|
5.179
|
5.869
|
6.548
|
7.214
|
7.867
|
8.508
|
|
68
|
4.809
|
5.567
|
6.313
|
7.047
|
7.768
|
8.477
|
9.174
|
|
70
|
4.957
|
5.740
|
6.511
|
7.269
|
8.015
|
8.749
|
9.470
|
|
73
|
5.179
|
5.999
|
6.807
|
7.602
|
8.385
|
9.156
|
9.914
|
|
76
|
5.401
|
6.258
|
7.103
|
7.935
|
8.755
|
9.563
|
10.358
|
|
89
|
6.363
|
7.380
|
8.385
|
9.378
|
10.358
|
11.326
|
12.281
|
|
108
|
7.768
|
9.020
|
10.259
|
11.486
|
12.701
|
13.903
|
15.093
|
|
133
|
11.178
|
12.725
|
14.261
|
15.783
|
17.294
|
18.792
|
|
|
159
|
13.422
|
15.290
|
17.146
|
18.989
|
20.821
|
22.639
|
|
|
219
|
18.601
|
21.209
|
23.805
|
26.388
|
28.959
|
31.517
|
|
|
273
|
23.262
|
26.536
|
29.797
|
33.046
|
36.283
|
39.508
|
|
|
325
|
27.750
|
31.665
|
35.568
|
39.458
|
43.337
|
47.202
|
|
|
355
|
38.897
|
43.158
|
47.406
|
51.641
|
|
|
|
|
377
|
41.339
|
45.871
|
50.390
|
54.897
|
|
|
|
|
426
|
46.777
|
51.913
|
57.036
|
62.147
|
|
|
|
|
单位：Kg/m
|
壁 厚
|
|
外 径
|
3
|
3.5
|
4
|
4.5
|
5
|
5.5
|
6
|
|
32
|
2.146
|
2.460
|
2.762
|
3.052
|
3.329
|
3.594
|
3.847
|
|
38
|
2.589
|
2.978
|
3.354
|
3.718
|
4.069
|
4.408
|
4.735
|
|
42
|
2.885
|
3.323
|
3.749
|
4.162
|
4.562
|
4.951
|
5.327
|
|
45
|
3.107
|
3.582
|
4.044
|
4.495
|
4.932
|
5.358
|
5.771
|
|
50
|
3.477
|
4.014
|
4.538
|
5.049
|
5.549
|
6.036
|
6.511
|
|
54
|
3.773
|
4.359
|
4.932
|
5.493
|
6.042
|
6.578
|
7.103
|
|
57
|
3.995
|
4.618
|
5.228
|
5.826
|
6.412
|
6.985
|
7.546
|
|
60
|
4.217
|
4.877
|
5.524
|
6.159
|
6.782
|
7.392
|
7.990
|
|
63.5
|
4.476
|
5.179
|
5.869
|
6.548
|
7.214
|
7.867
|
8.508
|
|
68
|
4.809
|
5.567
|
6.313
|
7.047
|
7.768
|
8.477
|
9.174
|
|
70
|
4.957
|
5.740
|
6.511
|
7.269
|
8.015
|
8.749
|
9.470
|
|
73
|
5.179
|
5.999
|
6.807
|
7.602
|
8.385
|
9.156
|
9.914
|
|
76
|
5.401
|
6.258
|
7.103
|
7.935
|
8.755
|
9.563
|
10.358
|
|
89
|
6.363
|
7.380
|
8.385
|
9.378
|
10.358
|
11.326
|
12.281
|
|
108
|
7.768
|
9.020
|
10.259
|
11.486
|
12.701
|
13.903
|
15.093
|
|
133
|
11.178
|
12.725
|
14.261
|
15.783
|
17.294
|
18.792
|
|
|
159
|
13.422
|
15.290
|
17.146
|
18.989
|
20.821
|
22.639
|
|
|
219
|
18.601
|
21.209
|
23.805
|
26.388
|
28.959
|
31.517
|
|
|
273
|
23.262
|
26.536
|
29.797
|
33.046
|
36.283
|
39.508
|
|
|
325
|
27.750
|
31.665
|
35.568
|
39.458
|
43.337
|
47.202
|
|
|
355
|
38.897
|
43.158
|
47.406
|
51.641
|
|
|
|
|
377
|
41.339
|
45.871
|
50.390
|
54.897
|
|
|
|
|
426
|
46.777
|
51.913
|
57.036
|
62.147
|
|
|
|
压力钢管在什么情况下采用封头？
(1)水电站的装机需要分期施工，对已安装好的钢管在进口或者末端需要使用封头封堵。
(2)钢管在安装过程中需要做水压试验时，用封头来封堵试验段的钢管，以便进行水压试验。
(3)为远期工程或其他设施从钢管预留出分支管。
压力钢管其制作工艺和方法主要有以下特点：
(1)钢板切割下料采用靠模半自动气割方法进行。靠模为一薄钢带，用磁性压铁沿划线放出的线压定，引导半自动切割机走向，这种下料方法既能达到精度要求，又经济实用。
(2)卷板采用4辊带液压前后托架的卷板机进行。由于液压托架能使长钢板卷制成型，随卷制弧度托起，不用吊车配合，重力变形小，瓦块卷制成型质量好。
(3)加劲环的制作和组装。压力钢管加劲环每圈由10块或9块弧度板拼焊而成，先在加劲环制作平台上用5块或4块弧度板拉组成半环，然后在钢管上组装焊接成环。加劲环与钢管组装，用“U”型附件点焊在钢管壁上，用千斤顶把加劲环压向钢管，使间隙在0～3 mm范围之内。
(4)压力钢管从钢板卷制成半圆瓦块到安装间焊成管段的整个制作运输组焊过程，都是竖直状态，只是在钢管管段吊运到引水道洞口，准备进洞安装时，才在翻转平台上翻转90°放平。这减小了钢管在运输过程中的变形。
(5)工地雨季1年中不到4个月，因此，中低压锅炉管制作除了钢管内壁除锈、刷漆工作在铁皮房中进行外，其他工作都在露天进行。
