gb3087低中壓鍋爐管的外徑和厚壁偏差是多少?
按國家標(biāo)準(zhǔn) GB3087 -2008標(biāo)準(zhǔn)供貨的鋼管壁厚和外徑偏差
鋼管種類 |
鋼管尺寸 mm |
允許偏差 |
普通級(jí) |
高級(jí) |
熱軋管 |
外徑 D |
≤ 159 |
±1.0%( 最小± 0.50mm ) |
±0.75%( 最小± 0.40mm ) |
> 159 |
±1.0% |
±0.90% |
壁厚 s |
≤ 20 |
+15.0%( 最小 + 0.45mm ) - 12.5% - 0.35mm ) |
±10%( 最小± 0.30mm ) |
> 20 |
±12.5% |
±10% |
冷拔管 |
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% |
gb3087低中壓鍋爐管57X3.5的價(jià)格目前為6050元。
常用gb3087低中壓鍋爐管的規(guī)格如下
100 |
7.17 |
7.65 |
8.32 |
9.46 |
10.59 |
11.71 |
12.77 |
13.87 |
14.95 |
16.03 |
(102) |
7.32 |
7.81 |
8.50 |
9.67 |
10.82 |
11.96 |
13.09 |
14.21 |
15.31 |
16.40 |
(108) |
7.77 |
8.29 |
9.02 |
10.26 |
11.49 |
12.70 |
13.90 |
15.09 |
16.27 |
17.44 |
110 |
7.92 |
8.43 |
9.19 |
10.46 |
11.70 |
12.93 |
14.19 |
15.40 |
16.60 |
17.75 |
120 |
8.66 |
9.22 |
10.06 |
11.44 |
12.93 |
14.30 |
15.51 |
16.89 |
18.20 |
19.50 |
125 |
9.02 |
9.61 |
10.50 |
11.91 |
13.37 |
14.80 |
16.15 |
17.55 |
19.02 |
20.35 |
130 |
9.40 |
10.00 |
10.92 |
12.43 |
13.92 |
15.48 |
16.88 |
18.35 |
19.80 |
21.20 |
(133) |
9.59 |
10.25 |
11.18 |
12.75 |
14.26 |
15.75 |
17.29 |
18.79 |
20.28 |
21.75 |
140 |
10.11 |
10.79 |
11.80 |
13.42 |
15.05 |
16.65 |
18.24 |
19.83 |
21.40 |
22.96 |
150 |
10.85 |
11.52 |
12.65 |
14.39 |
16.11 |
17.85 |
19.55 |
21.25 |
23.00 |
24.68 |
160 |
- |
- |
13.53 |
15.38 |
17.25 |
19.09 |
20.96 |
22.79 |
24.60 |
26.41 |
170 |
- |
- |
14.31 |
16.31 |
18.35 |
20.30 |
22.31 |
24.27 |
26.21 |
28.14 |
180 |
- |
- |
15.20 |
17.30 |
19.50 |
21.59 |
23.67 |
25.75 |
27.81 |
29.87 |
190 |
- |
- |
- |
18.29 |
20.60 |
22.80 |
25.02 |
27.22 |
29.41 |
31.59 |
200 |
- |
- |
- |
19.67 |
21.65 |
24.00 |
26.38 |
28.70 |
31.02 |
33.32 |
矩形管理論重量表
矩形管規(guī)格表
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