管道常用标准尺寸对照(新)

1、水管气管管道常用标准尺寸对照：1英寸=2.54厘米把1英寸分成8等分；1/81/43/81/25/83/47/8英寸.相当于通常说的1分管到7分管,更小的尺寸用1/16、1/32、1/64来表示,单位还是英寸.如果分母和分子能够约分如分子是2、4、8、16、32就应该约分.英寸的表示是在右上角打上两撇,如1/2"如DN2525mm下同的水管就是英制1的水管,也是解放前的8分水管.DN15的水管就是英制1/2"的水管,也是解放前的4分水管.如DN20勺水管就是英制3/4"的水管,也是解放前的6分水管.一、尺寸：见附表二、标准：有英制标准和国际标准两种.三、材质：材质

2、就有很多,根据不同的需要.1、塑料管：有PVGUPVCPPRPPR!态塑铝合金、铝塑管、玻纹管、PE管等.2、金属管：镀锌管、不锈钢管、不锈钢衬塑管、薄壁不锈钢管、镀锌衬塑管、铜管、铸铁管等.我国水管的规格均采用我国法定单位的公称直径来标称的.如DN2Q就是表示公称直径20毫米的镀锌水管.镀锌水管的系列有：DN15DN20DN25DN32DN4ODN50DN65DN80DN100.等.你说的几分几分的名称,是解放前我国落后,没有自己的规格和单位,就沿用了英国的单位.英国的单位是：1英尺ft=12英寸1英寸in=1000英丝milo其中水管的规格是英寸的分数,刚好是把一英寸分成了八份就好表示水管

3、的规格,就创造了一个英分的单位.其实没有英分这个单位,而是用分数带上英寸来表示1英寸以下的尺寸.把英寸分成8分,应该是这样说：1/8英寸1/43/81/25/83/47/8相当于常说的1分到7分,更小的尺寸用1/16、1/32、1/64来表示,单位还是英寸.如果分母和分子能够约分,如分子是2、4、8、16、够约分,就应该约分.英寸的表示是在右上角打上两撇,如1/2"如DN25勺水管就是英制1的水管,也是解放前的8分水管.DN15的水管就是英制1/2"的水管,也是解放前的4分水管.如DN20勺水管就是英制3/4"的水管,也是解放前的6分水管.32时如果能管内径标称m

4、m规格inch台湾CNS规格日本JIS规格国内DIN管外径规格管厚度美国ANSI管外径英国BS美标SCH80美标SCH40管外径管外径管厚度管外径管厚度管外径管外径管厚度103/8"18±0.22.2±0.618±0.22.5±0.216±0.217.1417.14151/2"22±0.22.7±0.622±0.23.0±0.320±0.32.0±0.421.3421.3421.3±0.13.985±0.25521.3±0.1203/4

5、"26±0.22.7±0.626±0.23.0±0.325±0.33.0±0.526.6726.6726.7±0.14.165±0.25526.7±0.1251"34±0.33.2±0.632±0.33.5±0.332±0.34.0±0.633.4033.4033.4±0.134.815±0.26533.4±0.13321+1/4"42±0.33.2±0.638

6、77;0.33.5±0.340±0.34.6±0.742.1642.1642.16±0.135.14±0.2942.16±0.13401+1/2"48±0.43.6±0.848±0.44.0±0.450±0.35.3±0.848.2648.2648.26±0.155.385±0.30548.26±0.15502"60±0.54.1±0.860±0.54.5±0.463±0.36

7、.0±0.960.3260.3260.32±0.155.87±0.3360.32±0.15652+1/2"76±0.54.1±0.876±0.54.5±0.475±0.36.6±1.073.0273.0273.02±0.187.43±0.4273.02±0.18803"89±0.55.1±0.889±0.55.9±0.490±0.37.3±1.188.9088.9088.9±0

8、.28.075±0.45588.9±0.21004"114±0.66.6±1.0114±0.67.1±0.5110±0.48.0±1.2114.30114.30114.3±0.239.07±0.51114.3±0.231255"140±0.87.5±1.2140±0.87.5±0.5140±0.49.3±1.4141.30141.301506"165±1.08.5±1.4165

9、±1.09.6±0.7160±0.510±1.5168.28168.28168.3±0.2811.63±0.66168.3±0.282008"216±1.310.5±1.4216±1.311.0±0.7225±0.712±1.8219.08219.08219.1±0.3813.46±0.76219.1±0.3825010"267±1.613.0±1.8267±1.613.6±0

10、.9250±0.812.6±1.9273.05273.05273.1±0.3815.96±0.9273.1±0.3830012"318±1.915.5±2.2318±1.916.2±1.1315.014±2.1323.85323.85323.9±0.3818.49±1.04323.9±0.38各国自来水管尺寸明细表管厚度3.025±0.2553.125±0.2553.635±0.2553.815±0.2553.94&

11、#177;0.254.165±0.2555.465±0.3055.82±0.336.375±0.3557.54±0.438.675±0.4959.83±0.5610.93±0.62235040045050060014"16"18"20"24"18.0±2.620.5±3.022.9±3.425.3±3.830.7±4.0370±2.2420±2.6470±3.0520±3.56

12、30±4.0管道常用标准尺寸中英对照表公称通径英制备注公称通径英制备注公称通径英制备注DN154分管DN2008寸管DN75030DN206分管DN25010寸管DN80032DN251R一管DN30012DN85034DN321寸2管DN35014DN90036DN401寸:羊管DN40016DN95038DN502勺一管DN45018DN100040DN652寸羊管DN50020DN105042DN803勺一管DN55022DN110044DN1004R一管DN60024DN115046DN1255R一管DN65026DN120048DN1506R一管DN70028"寸

13、nchsize内径OD壁厚标准SCH5sSCH10SSCH10SCH20SCH30SCH40SCH60SCH80SCH100SCH120SCH140SCH160STDXSXXS1/8DN610.3-1.24-1.73-2.42-1.732.41-1/4DN813.7-1.65-2.24-3.02-2.243.02-3/8DN1017.1-1.65-2.31-3.2-2.313.20-1/2DN1521.31.652.11-2.77-3.73-4.782.773.737.473/4DN2026.71.652.11-2.87-3.91-5.562.873.917.821DN2533.41.652.

14、77-3.38-4.55-6.353.384.559.091-1/4DN3242.21.652.77-3.56-4.85-6.353.584.859.701-1/2DN4048.31.652.77-3.68-5.05-7.143.685.0810.152DN5060.31.652.77-3.91-5.54-8.743.915.5411.072-1/2DN6573.02.113.05-5.16-7.01-9.535.167.0114.023DN8088.92.113.05,-5.49-7.62-11.135.497.5215.243-1/2DN90101.62.113.05-5.74-8.08-

15、5.748.08-4DN100114.32.113.05-6.02-8.58-11.13-13.496.028.5617.125DN125141.32.773.4-6.55-9.53-12.70-15.886.559.5318.056DN150168.32.773.4-7.11-10.97-14.27-18.267.1110.9721.958DN200219.12.773.76-6.357.048.1810.3112.7015.0918.2620.6223.018.1812.7022.2310DN250273.13.404.19-6.357.89.2712.7015.0918.2621.442

16、5.428.589.2712.7025.4012DN300323.93.964.57-6.358.3810.3114.2717.4821.4425.428.5833.329.3512.7025.4014DN350355.53.964.786.357.929.5311.1315.0919.0523.8327.7931.7535.719.5312.70-16DN400406.44.194.786.357.929.5312.7016.6621.4426.1930.9636.5340.499.5312.70-18DN4504574.194.786.357.9211.1314.2719.0523.832

17、9.3634.9339.6745.249.5312.70-20DN5005084.785.546.359.5312.7015.0920.6226.1932.5438.144.45,50.019.5312.70-22DN5505594.785.546.359.5312.70-22.2328.5834.9341.2847.6353.989.5312.70-24DN6006105.546.356.359.5314.2717.4824.6130.9638.8946.0252.3759.549.5312.70-26DN650660-7.9212.7-,9.5312.7028DN700711-7.9212.715.88-,9.5312.70-30DN7507626.357.927.9212.715.88-,9.5312.7032DN800813-7.9212.715.8817.48-9.5312.70-34DN850864-7.