鋼管承壓計(jì)算公式/無縫鋼管壓力壁厚對照表/直縫焊管承受壓力表
鋼管管道的承壓問題一直是困擾廣大鋼管從業(yè)人員的細(xì)節(jié)性問題， 每個(gè)人都能通過鋼仔壓力壁厚對照表來比對鋼管的承壓能力， 但具體到某一根銅管上來講， 這根鋼管的承壓能力到底有多大，這個(gè)問題就有點(diǎn)棘手了。因?yàn)橥ㄟ^對照表來查詢， 這只是最保守的方法，而且這個(gè)數(shù)據(jù)也不是完全正確，這些數(shù)據(jù)雖然也是通過大量的科學(xué)實(shí)驗(yàn)得出的， 但它也只是一個(gè)大體數(shù)據(jù)并不絕對準(zhǔn)確。
因?yàn)殇摴艹袎耗芰@個(gè)問題還要受工作環(huán)境中溫度、內(nèi)部流體、鋼管生產(chǎn)流程等等一系列的問題所影響。如果在我們測算出銅管的外徑、壁厚、銅管材質(zhì)的抗拉強(qiáng)度的情況下， 我們可以通過計(jì)算分式來計(jì)算鋼管的承壓能力,當(dāng)然這里面涉及到的數(shù)據(jù)都是經(jīng)過實(shí)際測算的準(zhǔn)確的，且鋼管材質(zhì)的機(jī)械性能是有保證的。這樣我們獲取的數(shù)據(jù)就有了一定保證。
鋼管承壓能力和壁厚的計(jì)算公式:
壓力= (壁厚×2×鋼管材質(zhì)抗拉強(qiáng)度) / (外徑*系數(shù))
上面所提到的鋼管壓力系數(shù)不是一個(gè)固定的數(shù)值， 它是要根據(jù)銅管的實(shí)際承壓能力而變的。下面就是鋼管壓力系數(shù)的界定范圍:
當(dāng)壓力P<7Mpa 時(shí)，系數(shù)為S=8 ;
當(dāng) 7<鋼管壓力P<17.5時(shí)， 系數(shù)為S =6 ;
當(dāng)壓力P>17.5時(shí)， 系數(shù)為S =4 。
一、無縫碳鋼管壓力及壁厚表 單位：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 | ||||
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 | ||||||||||||||||
10Cr5Mo | ≤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、無縫不銹鋼管壓力及壁厚表 單位：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不銹鋼 | ≤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、焊接鋼管壓力及壁厚表 單位：mm
材料 | PN MPa | DN | |||||||||||||||
200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 | 900 | 1000 | 1100 | 1200 | 1400 | 1600 | ||
焊接碳鋼管 （Q235/A20） | 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 | |||||||
焊接不銹鋼管 304 | 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 | |||||||
四、根據(jù)壓力計(jì)算鋼管 管道的選用壁厚的計(jì)算器：
這是一個(gè)EXCEL的計(jì)算程序，填入相關(guān)的數(shù)據(jù)，就可以自動(dòng)計(jì)算出選用鋼管的厚度，非常方便。
目前只做了3個(gè)鋼號：分別是 20#鋼,15CrMo,0Cr18Ni10Ti 其它鋼號有需要的可以給我們留言.
下載網(wǎng)址: 根據(jù)壓力計(jì)算鋼管管道的壁厚(管道工程選管利器)
五、管道承壓計(jì)算公式：
下載網(wǎng)址: 根據(jù)壓力計(jì)算鋼管管道的壁厚(管道工程選管利器)
關(guān)于無縫鋼管壁厚等級（如Sch80、Sch40）與承受壓力之間的關(guān)系
此圖來自《管道工程的設(shè)計(jì)基礎(chǔ)》一書.
如果還有其它問題，請?jiān)谙路浇o我們留言哦！
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