对焊异径三通、四通规格参数表（GB 12459、GB/T 13401）公称通径
DN端部外径中心至端面 D1D2CMA系列B系列A系列B系列20×1526.92521.318292925×20
25×1533.7
33.732
3226.9
21.325
1838
3838
3832×25
32×20
32×1542.4
42.4
42.438
38
3833.7
26.9
21.332
25
1848
48
4848
48
4840×32
40×25
40×20
40×1548.3
48.3
48.3
48.345
45
45
4542.4
33.7
26.7
21.338
32
25
1857
57
57
5757
57
57
5750×40
50×32
50×25
50×2060.3
60.3
60.3
60.357
57
57
5748.3
42.4
33.7
26.945
38
32
2564
64
64
6460
57
51
4465×50
65×40
65×32
65×2576.1(73)
76.1(73)
76.1(73)
76.1(73)76
76
76
7660.3
48.3
42.4
33.757
45
38
3276
76
76
7670
67
64
5780×65
80×50
80×40
80×3288.9
88.9
88.9
88.989
89
89
8976.1(73)
60.3
48.3
42.476
57
45
3886
86
86
8683
76
73
7090×80
90×65
90×50
90×40101.6
101.6
101.6
101.6
-
-
-
-88.9
76.1(73)
60.3
48.3-
-
-
-95
95
95
9592
89
83
79100×90
100×80
100×65
100×50
100×40114.3
114.3
114.3
114.3
114.3-
108
108
108
108101.6
88.9
76.1(73)
60.3
48.3-
89
76
57
45105
105
105
105
105102
98
95
89
86125×100
125×90
125×80
125×65
125×50139.7
139.7
139.7
139.7133
-
133
133
133114.3
101.6
88.9
76.1(73)
60.3108
-
89
76
57124
124
124
124
124117
114
111
108
105150×125
150×100
150×90
150×80
150×65168.3
168.3
168.3
168.3
168.3159
159
-
159
159139.7
114.3
101.6
88.9
76.1(73)133
108
-
89
76143
143
143
143
143137
130
127
124
121200×150
200×125
200×100
200×90219.1
219.1
219.1
219.1219
219
219
-168.3
139.7
114.3
101.6159
133
108
-178
178
178
178168
162
156
152200×200
200×150
200×125
200×100273.0
273.0
273.0
273.0273
273
273
273219.1
168.3
139.7
114.3219
159
133
108216
216
216
216208
194
191
184300×250
300×200
300×150323.9
323.9
323.9325
325
325273.0
219.1
168.3273
219
159254
254
254241
229
219