对焊异径三通、四通ASME/ANSI B16.9

公称通径 DN	端部外径	中心至端面
	Dl -D2	C	M
1/2×3/8	21.3×17.1	25
1/2×1/4	21.3×13.7
3/4×1/2	26.7×21.3	29
3/4×3/8	26.7×17.1
1×3/4	33.4×26.7	38
1×1/2	33.4×21.3
11/4×1	42.2×33.7	48
11/4×3/4	42.2×26.7
11/4×1/2	42.2×21.3
11/2×11/4	48.3×42.2	57
11/2×1	48.3×33.4
11/2×3/4	48.3×26.7
11/2×1/2	48.3×21.3
2×11/2	60.3×48.3	64	60
2×11/4	60.3×42.2		57
2×1	60.3×33.4		51
2×3/4	60.3×26.7		44
21/2×2	73.0×60.3	76	70
21/2×11/2	73.0×48.3		67
21/2×11/4	73.0×42.2		64
21/2×1	73.0×33.4	76	57
3×21/2	88.9×73.0	86	83
3×2	88.9×60.3		76
3×11/2	88.9×48.3		73
3×11/4	88.9×42.2	86	70
31/2×3	101.6×88.9	95	92
31/2×21/2	101.6×73.0		89
31/2×2	101.6×60.3		83
31/2×11/2	101.6×48.3	95	79
4×31/2	114.3×101.6	105  104.6	102
4×3	114.3×88.9		98
4×21/2	114.3×73.0		95
4×2	114.3×60.3		89