等径、异径三通 公称通径 Nominal Diameter 坡口处外径 Outside Diameter 中心至端面 Center to End D1 D2 DN NPS A 系列 Series A B 系列 Series B A 系列 Series A B 系列 Series B C M 15×15×15 1/2×1/2×1/2 21.3 18 21.3 18 25 25 15×15×10 1/2×1/2×3/8 21.3 18 17.3 14 25 25 15×15×8 1/2×1/2×1/4 21.3 18 13.7 10 25 25 20×20×20 3/4×3/4×3/4 26.9 25 26.9 25 29 29 20×20×15 3/4×3/4×1/2 26.9 25 21.3 18 29 29 20×20×10 3/4×3/4×3/8 26.9 25 17.3 14 29 29 25×25×25 1×1×1 33.7 32 33.7 32 38 38 25×25×20 1×1×3/4 33.7 32 26.9 25 38 38 25× 25× 15 1× 1× 1/2 33.7 32 21.3 18 38 38 32× 32× 32 1.1/4× 1.1/4× 1.1/4 42.4 38 42.4 38 48 48 32× 32× 25 1.1/4× 1.1/4× 1 42.4 38 33.7 32 48 48 32× 32× 20 1.1/4× 1.1/4× 3/4 42.4 38 26.9 25 48 48 32× 32× 15 1.1/4× 1.1/4× 1/2 42.4 38 21.3 18 48 48 40× 40× 40 1.1/2× 1.1/2× 1.1/2 48.3 45 48.3 45 57 57 40× 40× 32 1.1/2× 1.1/2× 1.1/4 48.3 45 42.4 38 57 57 40× 40× 25 1.1/2× 1.1/2× 1 48.3 45 33.7 32 57 57 40× 40× 20 1.1/2× 1.1/2× 3/4 48.3 45 26.9 25 57 57 40× 40× 15 1.1/2× 1.1/2× 1/2 48.3 45 21.3 18 57 57 50× 50× 50 2× 2× 2 60.3 57 60.3 57 64 64 50× 50× 40 2× 2× 1.1/2 60.3 57 48.3 45 64 60 50× 50× 32 2× 2× 1.1/4 60.3 57 42.4 38 64 57 50× 50× 25 2× 2× 1 60.3 57 33.7 32 64 51 50× 50× 20 2× 2× 3/4 60.3 57 26.9 25 64 44 65× 65× 65 2.1/2× 2/1/2× 2.1/2 73.0 76 73.0 76 76 76 65× 65× 50 2.1/2× 2/1/2× 2 73.0 76 60.3 57 76 70 65× 65× 40 2.1/2× 2/1/2× 1.1/2 73.0 76 48.3 45 76 67 65× 65× 32 2.1/2× 2/1/2× 1.1/4 73.0 76 42.4 38 76 64 65× 65× 25 2.1/2× 2/1/2× 1 73.0 76 33.7 32 76 57 80× 80× 80 3× 3× 3 88.9 89 88.9 89 86 86 80× 8...
