無縫管是一種具有中空截面、周邊沒有接縫的長條鋼材。全世界生產(chǎn)無縫管的共計(jì)有110多個(gè)國家的1850多個(gè)公司下的5100多個(gè)生產(chǎn)廠，其中生產(chǎn)石油管的有44個(gè)國家的170多個(gè)公司下的260多個(gè)廠。
|
單位：Kg/m
|
壁 厚
|
|
|
|
|
|
|
|
外 徑
|
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
|
