一、三通分类
三通分为机械三通,沟槽异径三通,沟槽机械三通,普通三通;三通以制作方法划分可分为顶制三通,压制三通,锻制三通,对焊三通,铸造三通等.三通按形状分有两种,等径三通和异径三通.等径三通就是三个口一样大小.
异径三通就是一段主管加上一个小的分支管,显然,两个大的尺寸是主管,中间接出来的小尺寸就是支管. 在纯氧管线中,一般是有压力的.
二、对焊三通、四通尺寸 GB12459
inch公称通径DN端部外径中心至端面
D1D2CM
A系列B系列A系列B系列
1/2×1/215×1521.31821.3182525
3/4×1/220×1526.92521.3182929
×3/4×20 26.9252929
1×1/225×1533.73221.3183838
×3/4×20 26.9253838
×1×25 33.7323838
11/2×1/232×1542.33821.3184848
×3/4×20 26.9254848
×1×25 33.7324848
×11/2×32 42.3384848
13/4×1/240×1548.34521.3185757
×3/4×20 26.9255757
×1×25 33.7325757
×11/2×32 42.3385757
×13/4×40 48.3455757
2×3/450×2060.35726.9256444
×1×25 33.7326451
×11/4×32 42.3386457
×11/2×40 48.3456460
×2×50 60.3576464
21/2×165×2576.17633.7327657
×11/4×32 42.3387664
×11/2×40 48.3457667
×2×50 60.3577670
×21/2×65 76.176
inch公称通径DN端部外径中心至端面
D1D2CM
A系列B系列A系列B系列
3×11/480×3288.98942.3388670
×11/2×40 48.3458673
×2×50 60.3578676
×21/2×65 76.1768683
×3×80 88.9898686
4×11/290×40101.6 48.3 9579
×2×50 60.3 9583
×21/2×65 76.1 9589
×3×80 88.9 9592
×31/2×90 101.6 9595
4×11/2100×40114.310848.34510586
×2×50 60.35710589
×21/2×65 76.17610595
×3×80 88.98910598
×31/2×90 101.6 105102
×4×100 114.3108105105
5×2125×5013913360.357124105
×21/2×65 76.176124108
×3×80 88.989124111
×31/2×90 101.6 124114
×4×100 114.3108124114
×5×125 139133124117
6×21/2150×65168.315976.176143121
×3×80 88.989143124
×31/2×90 101.6 143127
×4×100 114.3108143130
×5×125 139133143137
×6×150 168.3159143143
8×31/2200×90219.1219101.6 178152
×4×100 114.3108178156
×5×125 139133178162
×6×150 168.3159178168
×8×200 219.1219178178
10×4250×100273273114.3108216184
×5×125 139133216191
×6×150 168.3159216194
×8×200 219.1219216208
×10×250 273273216216
12×5300×125323.9325139133254216
×6×150 168.3159254219
×8×200 219.1219254229
×10×250 273273254241
×12×300 323.9325254254
14×6350×150355.6377168.3159279238
×8×200 219.1219279248
×10×250 273273279257
×12×300 323.9325279270
×14×350 355.6377279279
16×6400×150406.4426168.3159305264
×8×200 219.1219305273
×10×250 273273305283
×12×300 323.9325305295
×14×350 355.6377305305
×16×400 406.4426305305
18×8450×200457478219.1219343298
×10×250 273273343308
×12×300 323.9325343321
×14×350 355.6377343330
×16×400 406.4426343330
×18×450 457478343343
20×8500×200508529219.1219381324
×10×250 273273381333
×12×300 323.9325381346
×14×350 355.6377381356
×16×400 406.4426381356
×18×450 457478381368
×20×500 508529381381