异径三通和四通尺寸(摘自GB/T12459-1990)
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公称通径
DN
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端 部 外 径
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中心至端面尺寸
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D1
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D2
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C
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M
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A系列
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B系列
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A系列
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B系列
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20×20×15
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26.9
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25
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21.3
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18
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29
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29
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25×25×20
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33.7
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32
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26.9
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25
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38
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38
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25×25×15
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33.7
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32
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21.3
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18
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38
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38
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32×32×25
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42.4
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38
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33.7
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32
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48
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48
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32×32×20
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42.4
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38
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26.9
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25
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48
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48
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32×32×15
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42.4
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38
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21.3
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18
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48
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48
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40×40×32
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48.3
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45
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42.4
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38
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57
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57
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40×40×25
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48.3
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45
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33.7
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32
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57
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57
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40×40×20
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48.3
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45
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26.9
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25
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57
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57
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40×40×15
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48.3
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45
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21.3
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18
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57
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57
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50×50×40
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60.3
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57
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48.3
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45
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64
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60
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50×50×32
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60.3
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57
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42.4
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38
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64
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57
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50×50×25
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60.3
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57
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33.7
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32
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64
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51
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50×50×20
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60.3
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57
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26.9
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25
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64
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44
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65×65×50
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76.1(73)
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76
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60.3
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57
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76
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70
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65×65×40
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76.1(73)
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76
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48.3
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45
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76
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67
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65×65×32
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76.1(73)
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76
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42.4
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38
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76
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64
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65×65×25
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76.1(73)
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76
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33.7
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32
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76
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57
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80×80×65
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88.9
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89
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76.1(73)
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76
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86
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83
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80×80×50
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88.9
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89
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60.3
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57
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86
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76
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80×80×40
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88.9
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89
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48.3
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45
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86
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73
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80×80×32
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88.9
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89
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42.4
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38
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86
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70
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90×90×80
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101.6
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—
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88.9
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—
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95
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92
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90×90×65
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101.6
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—
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76.1(73)
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—
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95
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89
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90×90×50
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101.6
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—
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60.3
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—
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95
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83
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90×90
40
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101.6
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—
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48.3
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—
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95
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79
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100×100×90
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114.3
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—
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101.6
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—
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105
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102
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100×100×80
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114.3
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108
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88.9
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89
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105
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98
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100×100×65
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114.3
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108
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76.1(73)
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76
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105
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95
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100×100×50
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114.3
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108
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60.3
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57
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105
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89
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100×100×40
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114.3
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108
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48.3
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45
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105
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86
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125×125×100
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139.7
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133
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114.3
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108
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124
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117
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125×125×90
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139.7
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—
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101.6
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—
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124
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114
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125×125×80
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139.7
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133
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88.9
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89
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124
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111
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125×125×65
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139.7
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133
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76.1(73)
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76
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124
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108
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125×125×50
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139.7
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133
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60.3
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57
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124
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105
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150×150×125
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168.3
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159
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139.7
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133
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143
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137
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150×150×100
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168.3
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159
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114.3
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108
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143
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130
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150×150×90
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168.3
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—
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101.6
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—
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143
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127
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150×150×80
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168.3
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159
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88.9
|
89
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143
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124
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150×150×65
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168.3
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159
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76.1(73)
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76
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143
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121
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200×200×150
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219.1
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219
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168.3
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159
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178
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168
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200×200×125
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219.1
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219
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139.7
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133
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178
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162
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200×200×100
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219.1
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219
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114.3
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108
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178
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156
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200×200×90
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219.1
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—
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101.6
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—
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178
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152
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|
250×250×200
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273.0
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273
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219.1
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219
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216
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208
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250×250×150
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273.0
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273
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168.3
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159
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216
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194
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250×250×125
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273.0
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273
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139.7
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133
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216
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191
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250×250×100
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273.0
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273
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114.3
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108
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216
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184
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|
300×300×250
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323.9
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325
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273.0
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273
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254
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241
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300×300×200
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323.9
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325
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219.1
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219
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254
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229
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|
300×300×150
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323.9
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325
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168.3
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159
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254
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219
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300×300×125
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323.9
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325
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139.7
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133
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254
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216
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|
350×350×300
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355.6
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377
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323.9
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325
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279
|
270
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|
350×350×250
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355.6
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377
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273.0
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273
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279
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257
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350×350×200
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355.6
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377
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219.1
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219
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279
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248
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|
350×350×150
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355.6
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377
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168.3
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159
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279
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238
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|
400×400×350
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406.4
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426
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355.6
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377
|
305
|
305
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400×400×300
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406.4
|
426
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323.9
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325
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305
|
295
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|
400×400×250
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406.4
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426
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273.0
|
273
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305
|
283
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|
400×400×200
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406.4
|
426
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219.1
|
219
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305
|
273
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|
400×400×150
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406.4
|
426
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168.3
|
159
|
305
|
264
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|
450×450×400
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457.2
|
478
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406.4
|
426
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343
|
330
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|
450×450×350
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457.2
|
478
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355.6
|
377
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343
|
330
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|
450×450×300
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457.2
|
478
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323.9
|
325
|
343
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321
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|
450×450×250
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457.2
|
478
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273.0
|
273
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343
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308
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|
450×450×200
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457.2
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478
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219.1
|
219
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343
|
298
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|
500×500×450
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508.0
|
529
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457.2
|
478
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381
|
368
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500×500×400
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508.0
|
529
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406.4
|
426
|
381
|
356
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|
500×500×350
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508.0
|
529
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355.6
|
377
|
381
|
356
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|
500×500×300
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508.0
|
529
|
323.9
|
325
|
381
|
346
|
|
500×500×250
|
508.0
|
529
|
273.0
|
273
|
381
|
333
|
|
500×500×200
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508.0
|
529
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219.1
|
219
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381
|
324
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注:1. 尽可能采用括号内的数值。
2. 管件的端部外径有A、B两个系列,应优先选用A系列。
