結(jié)構(gòu)用無(wú)錫不銹鋼無(wú)縫鋼管(GB/T14975-1994)
(1)尺寸規(guī)格見(jiàn)表1、表2。
(2)允許偏差見(jiàn)表4。
(3)牌號(hào)和化學(xué)成分見(jiàn)表3。
(4)力學(xué)性能見(jiàn)表5。
(5)用途適于一般結(jié)構(gòu)及機(jī)械結(jié)構(gòu)用。
表1 結(jié)構(gòu)用無(wú)錫不銹鋼熱軋(擠、擴(kuò))無(wú)縫鋼管的尺寸規(guī)格(mm)
|
壁厚
外徑
|
4.5
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
19
|
20
|
22
|
24
|
25
|
26
|
28
|
|
68
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
70
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
73
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
76
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
80
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
83
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
89
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
95
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
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|
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|
|
|
|
|
|
102
|
◎
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◎
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◎
|
◎
|
◎
|
◎
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◎
|
◎
|
◎
|
◎
|
◎
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|
|
|
|
|
|
|
|
|
|
|
108
|
◎
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◎
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◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
|
|
|
|
|
|
|
|
|
|
|
|
114
|
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
|
◎
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|
|
|
|
|
|
|
|
|
|
|
|
121
|
|
◎
|
◎
|
◎
|
◎
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◎
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◎
|
◎
|
◎
|
◎
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◎
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|
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|
127
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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133
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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|
|
|
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|
|
140
|
|
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◎
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◎
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◎
|
◎
|
◎
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◎
|
◎
|
◎
|
◎
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◎
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◎
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|
|
|
|
|
|
|
|
|
|
146
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|
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◎
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◎
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◎
|
◎
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◎
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◎
|
◎
|
◎
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◎
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◎
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◎
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|
152
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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|
|
159
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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168
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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◎
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|
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|
|
|
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|
|
180
|
|
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◎
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◎
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◎
|
◎
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◎
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◎
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◎
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◎
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◎
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◎
|
◎
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194
|
|
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◎
|
◎
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◎
|
◎
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