一、管件的壁厚和管材的壁厚一樣嗎
管件的作用是連接管道管材,,選擇管件時(shí),,管件的壁厚是一個(gè)重要參數(shù),那么管件的壁厚怎么選呢,?和管材的壁厚一樣嗎,?
一般來(lái)說(shuō),管件的壁厚和管材是一樣的,,采購(gòu)的鋼管和管件都是配套的,,壁厚也是一樣的,在設(shè)計(jì)計(jì)算通過(guò)了的情況下,,可以選擇一樣的壁厚,;不過(guò)也有一些管件會(huì)比管材的壁厚要大一些,比如彎頭管件,,因?yàn)檫@種管件的壁厚相對(duì)于鋼管不均勻,,背弧厚度要比口上的薄,減壁情況會(huì)很多,,因此厚度會(huì)比管材厚一些,。
總的來(lái)說(shuō),在管道設(shè)計(jì)中管件壁厚的選擇原則是,,最薄的地方不低于要求厚度,。
二、管件壁厚標(biāo)準(zhǔn)表
管件的壁厚一般與它的型號(hào)規(guī)格有關(guān),不同規(guī)格的管件,,其厚度也有所不同,,下面是管件的壁厚標(biāo)準(zhǔn)表格:
公稱(chēng) 通徑 DN |
外 徑 |
公 稱(chēng) 壁 厚 |
||||||||||||
A系列 |
B系列 |
Sch5S |
Sch10S |
Sch20S |
Sch20 |
Sch30 |
Sch40 |
Sch60 |
Sch80 |
Sch100 |
Sch120 |
Sch140 |
Sch160 |
|
15 |
21.3 |
18 |
1.6 |
2.1 |
2.6 |
— |
— |
2.9 |
— |
3.6 |
— |
— |
— |
4.5 |
20 |
26.9 |
25 |
1.6 |
2.1 |
2.6 |
— |
— |
2.9 |
— |
4.0 |
— |
— |
— |
5.6 |
25 |
33.7 |
32 |
1.6 |
2.8 |
3.2 |
— |
— |
3.2 |
— |
4.5 |
— |
— |
— |
6.3 |
32 |
42.4 |
38 |
1.6 |
2.8 |
3.2 |
— |
— |
3.6 |
— |
5.0 |
— |
— |
— |
6.3 |
40 |
48.3 |
45 |
1.6 |
2.8 |
3.2 |
— |
— |
3.6 |
— |
5.0 |
— |
— |
— |
7.1 |
50 |
60.3 |
57 |
1.6 |
2.8 |
3.6 |
3.2 |
— |
4.0 |
— |
5.6 |
— |
— |
— |
8.8 |
65 |
76.1(73) |
76 |
2.0 |
3.0 |
3.6 |
4.5 |
— |
5.0 |
— |
7.1 |
— |
— |
— |
10.0 |
80 |
88.9 |
89 |
2.0 |
3.0 |
4.0 |
4.5 |
— |
5.6 |
— |
8.0 |
— |
— |
— |
11.0 |
90 |
101.6 |
— |
2.0 |
3.0 |
4.0 |
4.5 |
— |
5.6 |
— |
8.0 |
— |
— |
— |
12.5 |
100 |
114.3 |
108 |
2.0 |
3.0 |
4.0 |
5.0 |
— |
5.9 |
— |
8.8 |
— |
11.0 |
— |
14.2 |
125 |
139.7 |
133 |
2.9 |
3.4 |
5.0 |
5.0 |
— |
6.3 |
— |
10.0 |
— |
12.5 |
— |
16.0 |
150 |
168.3 |
159 |
2.9 |
3.4 |
5.0 |
5.6 |
— |
7.1 |
— |
11.0 |
— |
14.2 |
— |
17.5 |
200 |
219.1 |
219 |
2.9 |
4.0 |
6.3 |
6.3 |
7.1 |
8.0 |
10.0 |
12.5 |
16.0 |
17.5 |
20.0 |
22.2 |
250 |
273.0 |
273 |
3.6 |
4.0 |
6.3 |
6.3 |
8.0 |
8.8 |
12.5 |
16.0 |
17.5 |
22.2 |
25.0 |
28.0 |
300 |
323.9 |
325 |
4.0 |
4.5 |
6.3 |
6.3 |
8.8 |
10.0 |
14.2 |
17.5 |
22.2 |
25.0 |
28.0 |
32.0 |
350 |
355.6 |
377 |
4.0 |
5.0 |
— |
8.0 |
10.0 |
11.0 |
16.0 |
20.0 |
25.8 |
28.0 |
32.0 |
36.0 |
400 |
406.4 |
426 |
4.0 |
5.0 |
— |
8.0 |
10.0 |
12.5 |
17.5 |
22.2 |
28.0 |
30.0 |
36.0 |
40.0 |
450 |
457.0 |
478 |
4.0 |
5.0 |
— |
8.0 |
11.0 |
14.2 |
20.0 |
25.0 |
30.0 |
36.0 |
40.0 |
45.0 |
500 |
508.0 |
529 |
5.0 |
5.6 |
— |
10.0 |
12.5 |
16.0 |
20.0 |
28.0 |
32.0 |
40.0 |
45.0 |
50.0 |
注: 單位:mm;Sch5S,、Sch10S和Sch20S為不銹鋼管件用壁厚等級(jí),。