管径换算表谁有

管径当量换算表（空气、蒸汽、气体） 
管径1/2'3/4'1'1 1/2'2'2 1/2'3'4'5'6'7'8'9'10'1/2'152.274.8815.831.752.996.92053776209181292176724883/4'202.62.056.971423.342.590.416627340556977910961'257.552.93.456.8211.420.944.181.1133198278380536
1 1/4'3211/2'4024.29.33.22
3.346.131323.839.258.181.71121572'5054.8217.252.261.673.066.4711.919.62940.855.878.52 1/2'6510239.413.64.231.871.833.877.1211.717.424.433.4473'8017065.422.67.033.111.662.123.896.399.4813.320.923.74'10037614449.815.56.873.672.211.843.024.486.38.6112.15'12568626390.928.312.56.74.031.831.652.443.434.696.66'15011164291484620.410.96.562.971.631.48
2.092.854.027'175170765622670.531.216.6104.542.491.511.41
1.932.718'200243593632210144.523.814.36.483.542.181.43
1.35
1.939'2253335128144013760.832.519.58.854.852.981.951.37
1.41
10'
250
4393
1688
582
181
80.4
42.9
25.8
11.7
6.4
3.93
2.571.81.32
例：一根3/4’管径管子相当于2.27根1/2’的管子。 
一根13’管径管子相当于3.56根8’的管子。（由上表纵列对横列查得

管件口径换算表公称尺寸inch  inch公称通径DN国标A国标B美标日标  1/8  6  10.3  1/4  8  13.7  3/8  10  17.1  1/2  0.84  15  21.3  18  21.3  3/4  1.05  20  26.9  25  26.7  27.2  1  1.3...

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1  英寸=25.4毫米  =8英分  
1/2  是  四分(4英分)  DN15  
3/4  是  六分(6英分)  DN20  
2分管  DN8
4分管  DN15  
6分管  DN20  
1′      DN25  
1.2′    DN32  
1.5′    DN40  
2′      DN50  
2.5′    DN65  
3′      DN80  
4′      DN100  
5′      DN125  
6′      DN150  
8′      DN200  
10′    DN250  
12′    DN300  
DN指的是通径，单位毫米