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钢管外径、壁厚与承压能力对照表
本表格提供的是普通交货状态下（无缝钢管是热轧，直缝钢管是冷卷），钢管的承压能力的实验数据。如若对其管材进行调质等处理，其承压能力会大大大于以下对应数据。
山东普华永道金属有限公司是一家专业从事锻打钢管生产与销售的大型流通型企业。我公司致力于单件50吨以内锻打钢管、特厚壁合金钢管的生产与销售，生产的产品有特厚壁合金钢管、45#锻打钢管、Q345锻造钢管、20cr锻打钢管、40cr锻造钢管、30crM0锻造钢管、42crM0锻打钢管等，执行的标准有国标、日标、德标、英标、美标等。普华永道所生产经营的锻打钢管、特厚壁合金钢管已经广泛用于天然气、石油、化工、电力、热力、蒸汽供热、水电站用压力钢管、火力发电等工程领域。
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（一）无缝碳钢管壁厚 m m
材料 | PN MPa | DN | ||||||||||||||||||||
10 | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | |||
20 12CrMo 15CrMo 12Cr1MoV | ≤1.6 | 2.5 | 3 | 3 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4 | 4 | 4.5 | 5 | 6 | 7 | 7 | 8 | 8 | 8 | 9 | |
2.5 | 2.5 | 3 | 3 | 3 | 2 | 3.5 | 3.5 | 4 | 4 | 4 | 4 | 4.5 | 5 | 6 | 7 | 7 | 8 | 8 | 9 | 10 | ||
4.0 | 2.5 | 3 | 3 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4.5 | 5 | 5.5 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 15 | ||
6.4 | 3 | 3 | 3 | 3.5 | 3.5 | 3.5 | 4 | 4.5 | 5 | 6 | 7 | 8 | 9 | 11 | 12 | 14 | 16 | 17 | 19 | 22 | ||
10.0 | 3 | 3.5 | 3.5 | 4 | 4.5 | 4.5 | 5 | 6 | 7 | 8 | 9 | 10 | 13 | 15 | 18 | 20 | 22 | |||||
16.0 | 4 | 4.5 | 5 | 5 | 6 | 6 | 7 | 8 | 9 | 11 | 13 | 15 | 19 | 24 | 26 | 30 | 34 | |||||
20.0 | 4 | 4.5 | 5 | 6 | 6 | 7 | 8 | 9 | 11 | 13 | 15 | 18 | 22 | 28 | 32 | 36 | ||||||
4.0T | 3.5 | 4 | 4 | 4.5 | 5 | 5 | 5.5 | |||||||||||||||
10 Cr5Mo | ≤1.6 | 2.5 | 3 | 3 | 3 | 3 | 3.5 | 3.5 | 4 | 4.5 | 4 | 4 | 4.5 | 5.5 | 7 | 7 | 8 | 8 | 8 | 8 | 9 | |
2.5 | 2.5 | 3 | 3 | 3 | 3 | 3.5 | 3.5 | 4 | 4.5 | 4 | 5 | 4.5 | 5.5 | 7 | 7 | 8 | 9 | 9 | 10 | 12 | ||
4.0 | 2.5 | 3 | 3 | 3 | 3 | 3.5 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 8 | 9 | 10 | 11 | 12 | 14 | 15 | 18 | ||
6.4 | 3 | 3 | 3 | 3.5 | 4 | 4 | 4.5 | 5 | 5.5 | 7 | 8 | 9 | 11 | 13 | 14 | 16 | 18 | 20 | 22 | 26 | ||
10.0 | 3 | 3.5 | 4 | 4 | 4.5 | 5 | 5.5 | 7 | 8 | 9 | 10 | 12 | 15 | 18 | 22 | 24 | 26 | |||||
16.0 | 4 | 4.5 | 5 | 5 | 6 | 7 | 8 | 9 | 10 | 12 | 15 | 18 | 22 | 28 | 32 | 36 | 40 | |||||
20.0 | 4 | 4.5 | 5 | 6 | 7 | 8 | 9 | 11 | 12 | 15 | 18 | 22 | 26 | 34 | 38 | |||||||
4.0T | 3.5 | 4 | 4 | 4.5 | 5 | 5 | 5.5 | |||||||||||||||
16Mn 15MnV | ≤1.6 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3 | 3 | 3.5 | 3.5 | 3.5 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6 | 6 | 6 | 7 | |
2.5 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3 | 3 | 3.5 | 3.5 | 3.5 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 7 | 7 | 8 | 9 | ||
4.0 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3 | 3 | 3.5 | 3.5 | 4 | 4.5 | 5 | 6 | 7 | 8 | 8 | 9 | 10 | 11 | 12 | ||
6.4 | 2.5 | 3 | 3 | 3 | 3.5 | 3.5 | 3.5 | 4 | 4.5 | 5 | 6 | 7 | 8 | 9 | 11 | 12 | 13 | 14 | 16 | 18 | ||
10.0 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4.5 | 5 | 6 | 7 | 8 | 9 | 11 | 13 | 15 | 17 | 19 | |||||
16.0 | 3.5 | 3.5 | 4 | 4.5 | 5 | 5 | 6 | 7 | 8 | 9 | 11 | 12 | 16 | 19 | 22 | 25 | 28 | |||||
20.0 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 7 | 8 | 9 | 11 | 13 | 15 | 19 | 24 | 26 | 30 |
(二)无缝不锈钢管壁厚 mm
材料 | PN MPa | DN | |||||||||||||||||||
10 | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | ||
1Cr18Ni9Ti 含Mo不锈钢 | ≤1.0 | 2 | 2 | 2 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 3.5 | 4 | 4 | 4.5 | |||
1.6 | 2 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3 | 3 | 3 | 3.5 | 3.5 | 4 | 4.5 | 5 | 5 | ||||
2.5 | 2 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3 | 3.5 | 3.5 | 4 | 4.5 | 5 | 6 | 6 | 7 | ||||
4.0 | 2 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3.5 | 4 | 4.5 | 5 | 6 | 7 | 8 | 9 | 10 | ||||
6.4 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3 | 3.5 | 4 | 4.5 | 5 | 6 | 7 | 8 | 10 | 11 | 13 | 14 | ||||
4.0T | 3 | 3.5 | 3.5 | 4 | 4 | 4 | 4.5 | ||||||||||||||
（三）焊接钢管壁厚 mm
材料 | PN MPa | DN | |||||||||||||||
200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 | 900 | 1000 | 1100 | 1200 | 1400 | 1600 | ||
焊接碳钢管 （Q235A20） | 0.25 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 |
0.6 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 10 | |
1.0 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 9 | 10 | 11 | 11 | 12 | ||
1.6 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | |||
2.5 | 7 | 8 | 9 | 9 | 10 | 11 | 12 | 13 | 15 | 16 | |||||||
焊接不锈钢管 | 0.25 | 3 | 3 | 3 | 3 | 3.5 | 3.5 | 3.5 | 4 | 4 | 4 | 4.5 | 4.5 | ||||
0.6 | 3 | 3 | 3.5 | 3.5 | 3.5 | 4 | 4 | 4.5 | 5 | 5 | 6 | 6 | |||||
1.0 | 3.5 | 3.5 | 4 | 4.5 | 4.5 | 5 | 5.5 | 6 | 7 | 7 | 8 | ||||||
1.6 | 4 | 4.5 | 5 | 6 | 6 | 7 | 7 | 8 | 9 | 10 | |||||||
2.5 | 5 | 6 | 7 | 8 | 9 | 9 | 10 | 12 | 13 | 15 | |||||||
