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钢管的规格一般以钢管的外径 D 、内径和壁厚 S 的毫米（ mm ）数标定。
钢管尺寸分不定尺和定尺：不定尺（通常长度） 凡产品尺寸（长度或宽度），在标准规定范围内，而又不要求固定尺寸的叫不定尺。
定尺 按订货要求切成固定尺寸的称为定尺。按定尺长度交货时，所交金属材料必须具有需方在订货合 同中指定的长度。因此规定了允许有偏差。
钢管理论重量
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5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
18 |
| D219 |
26.88 |
32.02 |
37.10 |
42.13 |
|
|
|
|
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| D245 |
30.09 |
35.86 |
41.59 |
47.26 |
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| D273 |
33.55 |
40.01 |
46.42 |
52.78 |
59.10 |
65.36 |
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| D325 |
39.96 |
47.70 |
55.40 |
63.04 |
70.64 |
78.18 |
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| D377 |
46.37 |
55.40 |
63.87 |
73.30 |
82.18 |
91.01 |
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| D426 |
52.41 |
62.65 |
72.33 |
82.97 |
93.05 |
102.59 |
113.08 |
123.02 |
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| D478 |
58.82 |
70.34 |
81.81 |
93.23 |
104.60 |
115.92 |
127.19 |
138.41 |
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| D529 |
65.11 |
77.89 |
90.61 |
103.29 |
115.92 |
128.49 |
141.02 |
153.50 |
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| D630 |
|
92.83 |
108.05 |
123.22 |
138.33 |
153.40 |
168.42 |
183.39 |
198.31 |
213.18 |
|
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| D720 |
|
106.15 |
123.59 |
140.97 |
158.31 |
175.60 |
192.84 |
210.02 |
227.16 |
244.25 |
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| D820 |
|
120.95 |
140.85 |
160.70 |
180.50 |
200.26 |
219.96 |
239.62 |
259.22 |
278.78 |
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| D920 |
|
|
158.10 |
180.43 |
202.70 |
224.92 |
247.09 |
269.21 |
291.28 |
313.31 |
335.28 |
357.20 |
|
| D1020 |
|
|
|
200.16 |
224.89 |
249.58 |
274.22 |
298.81 |
323.34 |
?347.82 |
372.27 |
396.66 |
445.29 |
| D1120 |
|
|
|
219.89 |
247.09 |
274.24 |
301.35 |
328.40 |
355.40 |
382.36 |
409.26 |
436.12 |
489.69 |
| D1220 |
|
|
|
239.62 |
269.29 |
298.9 |
328.47 |
357.99 |
387.46 |
?416.88 |
446.26 |
475.58 |
534.08 |
| D1320 |
|
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219.48 |
323.57 |
355.60 |
387.59 |
419.52 |
451.41 |
483.25 |
515.04 |
578.47 |
| D1420 |
|
|
|
|
313.68 |
348.23 |
382.73 |
417.18 |
451.58 |
485.94 |
520.24 |
554.50 |
622.86 |
D1520 |
|
|
|
|
335.87 |
372.89 |
409.86 |
446.77 |
483.64 |
520.46 |
557.23 |
593.95 |
667.25 |
D1620 |
|
|
|
|
358.08 |
397.55 |
436.98 |
476.37 |
515.70 |
554.99 |
594.23 |
633.41 |
711.64 |
| D1820 |
|
|
|
|
|
446.87 |
491.24 |
535.56 |
579.82 |
624.04 |
668.21 |
712.33 |
800.42 |
| D1920 |
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471.53 |
518.37 |
565.15 |
611.88 |
658.57 |
705.20 |
751.79 |
844.81 |
| D2020 |
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496.20 |
545.49 |
594.74 |
643.94 |
693.09 |
742.19 |
791.25 |
889.20 |
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8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
18 |
注：绿色部分是钢管的生产范围?
5-18mm是钢管壁厚，219-2020mm是钢管外径
数值是钢管理论重量 |
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