口径尺寸换算表
                2025-03-29 6567 浏览
             
            
                | 公称尺寸 inch | 公称通径 DN | 国标 A | 国标 B | 
|---|
| 1/8""(1 分) | 6 | 10.3(美标) | 
  | 
| 1/4""(2 分) | 8 | 13.9(美标) | 
  | 
| 3/8""(3 分) | 10 | 17.1(美标) | 
  | 
| 1/2""(4 分) | 15 | 21.3 | 14 | 
| 3/4""(6 分) | 20 | 26.9 | 18 | 
| 1"" | 25 | 26.9 | 25 | 
| 1 1/4"" | 32 | 33.7 | 32 | 
| 1 1/2"" | 40 | 42.4 | 38 | 
| 2"" | 50 | 48.3 | 45 | 
| 2 1/2"" | 65 | 60.3 | 57 | 
| 3"" | 80 | 76.1(73) | 76 | 
| 4"" | 100 | 88.9 | 89 | 
| 5"" | 125 | 114.3 | 108 | 
| 6"" | 150 | 139.7 | 133 | 
| 8"" | 200 | 168.3 | 159 | 
| 10"" | 250 | 219.1 | 219 | 
| 12"" | 300 | 273 | 273 | 
| 14"" | 350 | 323.9 | 325 | 
| 16"" | 400 | 355.6 | 377 | 
| 18"" | 450 | 406.4 | 426 | 
| 20"" | 500 | 457.2 | 478 | 
| 22"" | 550 | 508 | 529 | 
| 24"" | 600 | 559 | 
  | 
| 26"" | 650 | 610 | 630 | 
| 28"" | 700 | 660 | 
  | 
| 30"" | 750 | 711 | 720 | 
| 32"" | 800 | 762 | 
  | 
| 34"" | 850 | 813 | 820 | 
| 36"" | 900 | 864 | 
  | 
| 38"" | 950 | 914 | 920 | 
| 40"" | 1000 | 965 | 
  | 
| 42"" | 1050 | 1016 | 1020 | 
| 44"" | 1100 | 1067 | 1120 | 
| 46"" | 1150 | 1118 | 
  | 
| 48"" | 1200 | 1220 | 1220 |