全國咨詢熱線
15302118078
外徑(毫米) |
壁 厚(毫米) | ||||||||||
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
6 |
6.5 |
7 |
7.5 | |
理 論 重 量 (公斤/米) | |||||||||||
32 |
1.82 |
2.15 |
2.46 |
2.76 |
3.05 |
3.33 |
3.59 |
3.85 |
4.09 |
4.32 |
4.53 |
38 |
2.19 |
2.59 |
2.98 |
3.35 |
3.72 |
4.07 |
4.41 |
4.74 |
5.05 |
5.35 |
5.64 |
42 |
2.44 |
2.89 |
3.35 |
3.75 |
4.16 |
4.56 |
4.95 |
5.33 |
5.69 |
6.04 |
6.38 |
45 |
2.62 |
3.11 |
3.58 |
4.04 |
4.49 |
4.93 |
5.36 |
5.77 |
6.17 |
6.56 |
6.94 |
50 |
2.93 |
3.48 |
4.01 |
4.54 |
5.05 |
5.55 |
6.04 |
6.51 |
6.97 |
7.42 |
7.86 |
54 |
- |
3.77 |
4.36 |
4.93 |
5.49 |
6.04 |
6.58 |
7.10 |
7.61 |
8.11 |
8.60 |
57 |
- |
4.00 |
4.62 |
5.23 |
5.83 |
6.41 |
6.99 |
7.55 |
8.10 |
8.63 |
9.16 |
60 |
- |
4.22 |
4.88 |
5.52 |
6.16 |
6.78 |
7.39 |
7.99 |
8.58 |
9.15 |
9.71 |
63.5 |
- |
4.48 |
5.18 |
5.87 |
6.55 |
7.21 |
7.87 |
8.51 |
9.14 |
9.75 |
10.36 |
68 |
- |
4.81 |
5.57 |
6.31 |
7.05 |
7.77 |
8.48 |
9.17 |
9.86 |
10.53 |
11.19 |
70 |
- |
4.96 |
5.74 |
6.51 |
7.27 |
8.01 |
8.75 |
9.47 |
10.18 |
10.88 |
11.56 |
73 |
- |
5.18 |
6.00 |
6.81 |
7.60 |
8.38 |
9.16 |
9.91 |
10.66 |
11.39 |
12.11 |
76 |
- |
5.40 |
6.26 |
7.10 |
7.93 |
8.75 |
9.56 |
10.36 |
11.14 |
11.91 |
12.67 |
83 |
- |
- |
6.86 |
7.79 |
8.71 |
9.62 |
10.51 |
11.39 |
12.26 |
13.12 |
13.96 |
89 |
- |
- |
7.38 |
8.38 |
9.38 |
10.36 |
11.33 |
12.28 |
13.22 |
14.16 |
15.07 |
95 |
- |
- |
7.90 |
8.98 |
10.04 |
11.10 |
12.14 |
13.17 |
14.19 |
15.19 |
16.18 |
102 |
- |
- |
8.50 |
9.67 |
10.82 |
11.96 |
13.09 |
14.21 |
15.31 |
16.40 |
17.48 |
108 |
- |
- |
- |
10.26 |
11.49 |
12.70 |
13.90 |
15.09 |
16.27 |
17.44 |
18.59 |
114 |
- |
- |
- |
10.85 |
12.15 |
13.44 |
14.72 |
15.98 |
17.23 |
18.47 |
19.70 |
鋼管種類 |
鋼管尺寸
mm |
允許偏差 | ||
普通級 |
高級 | |||
熱軋(擠)管 |
外徑
D |
≤159 |
+1.0%(最小值為+0.50mm) |
+1.0%(最小值為+0.5mm) |
>159 |
+1.0% |
+1.0% | ||
壁厚
S |
≤20 |
+15%(最小值為+0.45mm)
-12.5%(最小值為-0.35mm) |
+1.0%(最小值為+0.30mm) | |
>20 |
+12.5% |
+10% | ||
D≥351熱擴(kuò)鋼管 |
+15% | |||
冷拔(軋)管 |
外徑
D |
10~30 |
+0.40mm |
+0.20mm |
>30~50 |
+0.45mm |
+0.25mm | ||
>50 |
+1.0% |
+0.75% | ||
壁厚
S |
1.5~3.0 |
+15%
-10% |
+10% | |
>3.0 |
+12.5%
-10% |
+10% |
標(biāo)準(zhǔn) |
牌號 |
抗拉強(qiáng)度(MPa) |
屈服強(qiáng)度(MPa) |
伸長率(%) |
GB3087 |
10 |
335-475 |
≥195 |
≥24 |
20 |
410-550 |
≥245 |
≥20 |
標(biāo)準(zhǔn) |
牌號 |
化學(xué)成分 | |||||||||
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Cu |
Ni |
V | ||
GB3087 |
10 |
0.07-0.14 |
0.17-0.37 |
0.35-0.65 |
≤0.035 |
≤0.035 |
≤0.15 |
/ |
≤0.25 |
≤0.25 |
/ |
20 |
0.17-0.24 |
0.17-0.37 |
0.35-0.65 |
≤0.035 |
≤0.035 |
≤0.25 |
/ |
≤0.25 |
≤0.25 |
/ |