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公差 ASME B16.9
| 所有管件[注(1)、(2)] |
中心至端面尺寸 |
异径管和翻边短接总长, F,H |
管帽
总长 E |
180度弯头 |
| 规格(NPS) |
DN |
坡口处外径, D [注(3) 、(4)] |
端部内径
[注(3) 、(5)] |
90度、45度弯头、三通A,,B,C,M |
3D 弯头, A,B |
中心至中心尺寸, O |
背部至端面尺寸 K |
端部不重合度, U |
| 1/2to2 1/2 |
15-65 |
+1.6-0.8 |
0.8 |
2 |
3 |
2 |
3 |
6 |
6 |
1 |
| 3to3 1/2 |
80-90 |
1.6 |
1.6 |
2 |
3 |
2 |
3 |
6 |
6 |
1 |
| 4 |
100 |
1.6 |
1.6 |
2 |
3 |
2 |
3 |
6 |
6 |
1 |
| 5to8 |
125-200 |
+2.4 -1.6 |
1.6 |
2 |
3 |
2 |
6 |
6 |
6 |
1 |
| 10to18 |
250-450 |
+4.0 -3.2 |
3.2 |
2 |
3 |
2 |
6 |
10 |
6 |
2 |
| 20to24 |
500-600 |
+6.4 -4.8 |
4.8 |
2 |
3 |
2 |
6 |
10 |
6 |
2 |
| 26to30 |
650-750 |
+6.4 -4.8 |
4.8 |
3 |
6 |
5 |
10 |
... |
... |
... |
| 32to48 |
800-1200 |
+6.4 -4.8 |
4.8 |
5 |
6 |
5 |
10 |
... |
... |
... |
| 规格(NPS) |
DN |
翻边短接 |
规格(NPS) |
DN |
角度公差 |
| 搭接边外径, G |
搭接边倒角半径, R |
搭接边厚度 |
偏离角, Q |
偏主平面, P |
| 1/2to2 1/2 |
15-65 |
+0,-1 |
+0,-1 |
+1.6,-0 |
1/2to4 |
15-100 |
1 |
2 |
| 3to3 1/2 |
80-90 |
+0,-1 |
+0,-1 |
+1.6,-0 |
5to8 |
125-200 |
2 |
4 |
| 4 |
100 |
+0,-1 |
+0,-2 |
+1.6,-0 |
10to12 |
250-300 |
3 |
5 |
| 5to8 |
125-200 |
+0,-1 |
+0,-2 |
+1.6,-0 |
14to16 |
350-400 |
3 |
6 |
| 10to18 |
250-450 |
+0,-2 |
+0,-2 |
+3.2,-0 |
18to24 |
450-600 |
4 |
`10 |
| 20to24 |
500-600 |
+0,-2 |
+0,-2 |
+3.2,-0 |
26to30 |
650-750 |
5 |
10 |
| 26to30 |
650-750 |
... |
... |
... |
32to42 |
800-1050 |
5 |
13 |
| 32to48 |
800-1200 |
... |
... |
... |
44to48 |
1100-1200 |
5 |
19 |
| (a)所有尺寸为mm. |
| (b)除注明外,公差为正偏差和负偏差. |
| 注: |
| (1)端部内径和公称壁厚有采购方指定. |
| (2)除非采购方指定壁厚公差,最小壁厚不得低于公称壁厚的87.5%. |
| (3)圆度为正偏差和负偏差绝对值之和. |
| (4)当需要直径壁厚以满足ASME B16.9标准2.2条的设计要求时,在成型管件的颈部,该项公差可超过表列值. |
| (5)除非采购方另有要求,这些公差适用于公称内径等于公称外径减两倍公称壁厚的场合. |
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