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,管件的壁(bi)厚(hou)是一個(ge)重要(yao)參數,那么管件的壁(bi)厚(hou)怎么選呢?和管材的壁(bi)厚(hou)一樣嗎?
一(yi)般來(lai)說,管(guan)(guan)(guan)件(jian)的壁厚和管(guan)(guan)(guan)材(cai)是一(yi)樣的,采購的鋼(gang)管(guan)(guan)(guan)和管(guan)(guan)(guan)件(jian)都是配套(tao)的,壁厚也(ye)是一(yi)樣的,在設計(ji)計(ji)算通過(guo)了的情況下,可以選(xuan)擇一(yi)樣的壁厚;不過(guo)也(ye)有一(yi)些(xie)管(guan)(guan)(guan)件(jian)會(hui)比(bi)管(guan)(guan)(guan)材(cai)的壁厚要大一(yi)些(xie),比(bi)如彎(wan)頭(tou)管(guan)(guan)(guan)件(jian),因為這種管(guan)(guan)(guan)件(jian)的壁厚相對于鋼(gang)管(guan)(guan)(guan)不均勻,背弧厚度要比(bi)口上的薄(bo),減壁情況會(hui)很多(duo),因此厚度會(hui)比(bi)管(guan)(guan)(guan)材(cai)厚一(yi)些(xie)。
總的來說,在管(guan)道設(she)計中(zhong)管(guan)件壁厚的選擇(ze)原則是,最薄的地(di)方不(bu)低于要(yao)求厚度。
二、管件壁厚標準表
管(guan)(guan)(guan)件的(de)壁(bi)厚一般與它(ta)的(de)型號規格有關,不同(tong)規格的(de)管(guan)(guan)(guan)件,其厚度也有所不同(tong),下面是管(guan)(guan)(guan)件的(de)壁(bi)厚標準表格:
公稱 通徑 DN |
外 徑 |
公 稱 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。