焊接件几何尺寸与形状公差
焊接件几何尺寸与形状公差分页导航
焊接件几何尺寸与形状公差
焊接件几何尺寸允差
公称尺寸/mm
|
公差(±)
|
外形尺寸/mm
|
各部分之间/mm
|
≤100
|
2
|
1
|
>100~250
|
3
|
1.5
|
>250~650
|
3.5
|
2
|
>650~1000
|
4
|
2.5
|
>1000~1600
|
5
|
3
|
>1600~2500
|
6
|
3.5
|
>2500~4000
|
7
|
4
|
>4000~6500
|
8
|
5
|
>6500~10000
|
9
|
6
|
>10000~16000
|
11
|
7
|
>16000~25000
|
13
|
8
|
>25000~40000
|
15
|
9
|
焊前弯曲成形的筒体允差
外径DH/mm
|
公差/mm
|
△DH
|
当筒体壁厚为下列数值时的圆度
|
弯角C
|
≤30
|
>30
|
≤1000
|
±5
|
8
|
5
|
3
|
>1000~1500
|
±7
|
11
|
7
|
4
|
>1500~2000
|
±9
|
14
|
9
|
4
|
>2000~2500
|
±11
|
17
|
11
|
5
|
>2500~3000
|
±13
|
20
|
13
|
5
|
>3000
|
±15
|
23
|
15
|
6
|
焊前管子的弯曲半径公差
弯曲半径R/mm
|
公差
|
管子外径/mm
|
30
|
38
|
51
|
60
|
70
|
83
|
102
|
108
|
125
|
150
|
200
|
R=75~125
|
±2
|
±2
|
±3
|
±3
|
±4
|
-
|
-
|
-
|
-
|
-
|
-
|
R=160~300
|
±1
|
±1
|
±2
|
±2
|
±3
|
-
|
-
|
-
|
-
|
-
|
-
|
R=400
|
-
|
-
|
-
|
-
|
-
|
±5
|
±5
|
±5
|
±5
|
±5
|
±5
|
R=500~1000
|
-
|
-
|
-
|
-
|
-
|
±4
|
±4
|
±4
|
±4
|
±4
|
±4
|
R>1000
|
-
|
-
|
-
|
-
|
-
|
±3
|
±3
|
±3
|
±3
|
±3
|
±3
|
焊前管子在弯曲半径处的圆度公差
弯曲半径R/mm
|
在弯曲半径处的圆度a或b公差
|
管子外径/mm
|
30
|
38
|
51
|
60
|
70
|
83
|
102
|
108
|
125
|
150
|
200
|
R=75
|
3
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
R=100
|
2.5
|
3.1
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
R=125
|
2.3
|
2.6
|
3.6
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
R=160
|
1.7
|
2.1
|
3.2
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
R=200
|
-
|
1.7
|
2.8
|
3.6
|
-
|
-
|
-
|
-
|
-
|
-
|
-
|
R=300
|
-
|
1.6
|
2.6
|
3
|
4.6
|
5.8
|
-
|
-
|
-
|
-
|
-
|
R=400
|
-
|
-
|
-
|
2.4
|
3.3
|
5
|
7.2
|
8.1
|
-
|
-
|
-
|
R=500
|
-
|
-
|
-
|
1.8
|
3.4
|
4.2
|
6.2
|
7
|
7.6
|
-
|
-
|
R=600
|
-
|
-
|
-
|
1.5
|
2.3
|
3.4
|
5.1
|
5.9
|
6.5
|
7.5
|
-
|
R=700
|
-
|
-
|
-
|
1.2
|
1.9
|
2.5
|
3.6
|
4.4
|
5
|
6
|
7
|
焊前管子在弯曲处的允许的波纹深度
弯曲处波纹深度a′
|
管子外径/mm
|
30
|
38
|
51
|
60
|
70
|
83
|
102
|
108
|
125
|
150
|
200
|
—
|
1
|
1.5
|
1.5
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|