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无缝管
Date：2025-05-29
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我的结果
GB/T14975-1994
无缝不锈钢管
1
1.2
1.4
1.5
1.6
2
2.2
2.5
2.8
3
3.2
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
8.5
9
9.5
10
11
12
13
14
15
16
17
18
19
20
22
24
25
26
28
10
●
●
●
●
●
●
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●
11
●
●
●
●
●
●
●
●
●冷拉(轧)管
钢丝挡圈
12
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●
●
●
●
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●
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●
●
○热轧(挤、扩)管
自
至
丝径
13
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●
●
●
●
●
●
●
●
●
◎冷、热均有
4
6
0.6
14
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●
7
10
0.8
15
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●
12
14
1
16
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●
16
18
1.6
17
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●
20
30
2
18
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32
50
2.5
19
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●
55
125
3.2
20
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●
●
●
轴径
丝径
21
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22
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23
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24
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25
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27
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28
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30
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32
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34
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35
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36
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38
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40
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42
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45
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48
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50
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51
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53
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54
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56
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57
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60
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63
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65
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68
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◎
◎
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◎
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◎
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◎
◎
◎
70
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◎
◎
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◎
◎
◎
73
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◎
◎
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◎
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◎
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◎
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◎
◎
◎
75
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76
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◎
◎
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◎
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◎
◎
◎
80
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◎
◎
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◎
◎
◎
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83
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◎
◎
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◎
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◎
◎
◎
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85
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89
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◎
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90
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95
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◎
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◎
◎
◎
◎
◎
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100
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102
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◎
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◎
◎
◎
◎
◎
●
103
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108
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
114
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◎
◎
◎
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121
○
○
○
○
○
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○
○
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○
○
○
○
○
127
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◎
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133
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140
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○
146
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◎
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◎
◎
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○
152
○
○
○
○
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○
○
○
159
●
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◎
◎
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○
168
○
○
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○
○
○
○
180
○
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○
194
○
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○
219
○
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245
○
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○
287
○
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○
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○
○
○
325
○
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○
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○
351
○
○
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○
377
○
○
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426
○
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○
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轴的基本偏差
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