273*20兰州无缝钢管流体输送用不锈钢无缝钢管价格
流体输送用不锈钢无缝钢管的尺寸允许偏差
|
热轧(挤、扩)钢管 |
冷拔(轧)钢管 |
|
|
尺寸／mm |
允许偏差／mm |
尺寸／mm |
允许偏差／mm |
|
|
普通级 |
较高级 |
普通级 |
较高级 |
|
|
外径D |
68≤D≤159 |
±1.25 |
±1 |
外径D |
6-10 |
±0.20 |
±0.15 |
|
|
>10-30 |
±0.30 |
±0.20 |
|
|
159 |
±1.5 |
>30-50 |
±0.40 |
±0.30 |
|
|
>50 |
±0.9％ |
±0.8％ |
|
|
壁厚S |
>15 |
+15
-12.5 |
±12.5 |
壁厚S |
0.5-1 |
±0.15
±14％ |
±0.12 |
|
|
>1-3 |
|
+12％
-10％ |
|
|
≥15 |
+20
-15 |
|
|
>3 |
+12％
-10％ |
±10％ |
|
注：钢管的弯曲度不得大于如下规定:
壁厚<15mm……………………………………………………1.5mm／m
壁厚≥15mm……………………………………………………2.0mm／m
热扩管…………………………………………………………3.0mm／m
(1) 牌号和化学成分
|
组织
类型 |
序号 |
牌 号 |
化学成分(质量分数)(％) |
|
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Mo |
Ti |
其他 |
|
奥氏
体型 |
1 |
0Cr18Ni9 |
≤0.07 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
8.00-11.00 |
17.00-19.00 |
|
|
|
|
2 |
00Crl9Ni10 |
≤0.03c |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
8.00-12.00 |
18.00-20.00 |
|
|
|
|
3 |
0Cr23Ni13 |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
12.0-15.00 |
22.0-24.00 |
|
|
|
|
4 |
0Cr25Ni20 |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
19.00-22.00 |
24.00-26.00 |
|
5wc-0.07 |
|
|
5 |
0Crl8Ni10Ti |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
9.00-12.00 |
17.00-19.00 |
|
≥5wc |
|
|
6 |
0Crl8Ni11Nb |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
9.00-13.00 |
17.00-19.00 |
|
|
Nb≥10wc |
|
7 |
0Crl7Nil2Mo2 |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
10.00-14.00 |
16.00-18.50 |
2.00-3.00 |
|
|
|
8 |
00Crl7Ni14Mo2 |
≤0.030 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
12.00-15.00 |
16.0-18.00 |
2.00-3.00 |
|
|
|
9 |
0Crl9Nil3Mo3 |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
11.00-15.00 |
18.00-20.00 |
3.00-4.00 |
|
|
|
10 |
00Crl9Nil3Mo3 |
≤0.030 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
11.00-15.00 |
18.00-20.00 |
3.00-4.00 |
|
|
|
11 |
0Crl8Nil2Mo2Ti |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
11.00-14.00 |
16.00-19.00 |
1.80-2.50 |
5wc-0.70 |
|
|
12 |
1Crl8Nil2Mo2Ti |
≤0.12 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
11.00-14.00 |
16.00-19.00 |
1.80-2.50 |
5(wc-0.02)
-0.80 |
|
|
13 |
0Crl8Ni12Mo3Ti |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
11.00-14.00 |
16.00-19.00 |
2.50-3.50 |
5wc-0.70 |
|
|
14 |
lCrl8Ni12Mo3Ti |
≤0.12 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
1.00-14.00 |
16.0-19.00 |
2.50-3.50 |
5(wc-0.02)
-0.80 |
|
|
15 |
0Cr18Ni12Mo2C |
≤0.08 |
≤1.00 |
≤2.00 |
≤0.035 |
≤0.030 |
11.00-14.00 |
17.00-19.00 |
1.20-2.75 |
|
Gul.0-2.50 |
| 
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