1、名称图 示公称内径DN，mm内径d，mm壁厚e，mm长度Lmm最小外径基本尺寸平均偏差基本尺寸平均偏差三通DN 50500.811.00.83002.071.5DN 65650.811.00.83202.086.5DN80800.811.50.63602.0102.5DN1001001.012.00.83802.0122.5DN 1251251.012.00.84002.0147.5DN15015012.50.84502.0173.5DN 20020013.00.95102.0223.5DN25025014.01.06002.0273.5DN30030014.01.06702.0323.5DN
2、 3503462.018.01.08602.0DN 4003962.018.01.09302.0DN 4504462.018.01.010002.0DN 5004962.018.01.010702.0附表1 等径三通基本参数名称图 示公称内径DN，mm内径d，mm公称壁厚e，mmL1mm最小外径（mm）基本尺寸极限偏差基本尺寸极限偏差90弯头DN50500.811.00.8150.02.071.5DN65650.811.00.8160.02.086.5DN80800.811.50.6180.02.0102.5DN1001001.012.00.8190.02.0122.5DN1251251.01
3、2.00.8200.02.0147.5DN15015012.50.8225.02.0173.5DN20020013.00.9278.02.0223.5DN25025014.01.0335.02.0273.5DN30030014.01.0380.02.0323.5附表4 90o弯头基本参数附表2 变径三通基本参数规格大端小端L（mm）内径基本尺寸平均偏差壁厚最小外径内径基本尺寸平均偏差壁厚最小外径DN65/50650.811.00.886.5500.811.00.871.5320.02.0DN80/50800.811.50.6102.5500.811.00.871.5360.02.0DN80/6
4、5650.811.00.886.5360.02.0DN100/501001.011.50.6122.5500.811.00.871.5380.02.0DN100/65650.811.00.886.5380.02.0DN100/80800.812.00.8102.5380.02.0DN150/5015012.50.8173.5500.811.00.871.5450.02.0DN150/1001001.011.50.6122.5450.02.0DN200/5020013.00.9223.5500.811.00.871.5510.02.0DN200/1001001.011.50.6122.5510.
5、02.0DN200/15015012.50.8173.5510.02.0DN250/10025014.01.0273.51001.011.50.6122.5600.02.0DN250/15015012.50.8173.5600.02.0DN250/20020013.00.9223.5600.02.0DN300/10030014.01.0323.51001.011.50.6122.5670.02.0DN300/15015012.50.8173.5670.02.0DN300/20020013.00.8223.5670.02.0DN300/25025014.01.0273.5670.02.0变 径
6、三 通 图 示附表3 45o弯头基本参数名称图 示公称内径DN，mm内径d，mm壁厚e，mm长度Lmm最小外径（mm）基本尺寸极限偏差基本尺寸极限偏差45弯头DN 50500.811.00.8110.02.071.5DN 65650.811.00.8125.02.086.5DN80800.811.50.6145.02.0102.5DN1001001.012.00.8140.02.0122.5DN 1251251.012.00.8160.02.0147.5DN15015012.00.8170.02.0173.5DN 20020013.00.9185.02.0223.5DN25025014.01.
7、0215.02.0273.5DN30030014.01.0240.02.0323.5DN 3503462.018.02.0320.02.0DN 4003962.018.01.0340.02.0DN 4504462.018.01.0360.02.0DN 5004962.018.01.0380.02.0 附表5 异径管（变径直通）基本参数 单位：mm规格Dn大端小端L内径基本尺寸d1平均偏差壁厚最小外径D1内径基本尺寸d2平均偏差壁厚最小外径D2500-4004962.018.01.03962.018.01.0800.02.0400-3003962.018.01.030014.01.0323.57
8、20.02.0300-25030014.01.0323.525014.01.0273.5500.02.0300-20020013.00.9223.5500.02.0300-15015012.50.8173.5500.02.0250-20025013.51.5273.520013.00.9223.5500.02.0250-15015012.50.8173.5500.02.0250-1251251.012.00.7147.5500.02.0200-15020013.00.9223.515012.50.8173.5450.02.0200-1251251.012.00.8147.5450.02.020
9、0-1001001.012.00.8122.5450.02.0150-12515012.50.8173.51251.012.00.8147.5380.02.0150-1001001.012.00.8122.5380.02.0150-80800.811.50.6102.5380.02.0150-65650.811.00.886.5380.02.0150-50500.811.00.871.5380.02.0125-1001251.012.00.8147.51001.012.00.8122.5360.02.0125-80800.811.50.6102.5360.02.0125-65650.811.0
10、0.886.5360.02.0125-50500.811.00.871.5360.02.0100-801001.012.00.8122.5800.811.50.6102.5360.02.0100-65650.811.00.886.5360.02.0100-50500.811.00.871.5360.02.080-65800.811.50.6102.5650.811.00.886.5300.02.080-50500.811.00.871.5300.02.0异径管图示名称图 示公称内径DN，mm内径d，mm公称壁厚e，mmL1mm最小外径D（mm）基本尺寸极限偏差基本尺寸极限偏差22.5弯头DN2
11、00200.013.00.9185.02.0223.5DN300300.014.01.0235.02.0323.5DN50050023.01.0380.02.01703(周长)附表6 22.5o弯头基本参数附表7 11.25o弯头基本参数名称图 示公称内径DN，mm内径d，mm公称壁厚e，mmL1mm最小外径D（mm）基本尺寸极限偏差基本尺寸极限偏差11.25弯头DN500500.00.823.01.0380.02.01703(周长)直管加工最短尺寸要求规格两端封口（mm）单端接头（mm）两端接头（mm）DN50普通/薄壁200/350200/350250/350DN65普通/薄壁200/35
12、0200/350250/350DN80普通/薄壁250/350250/350300/350DN100普通/薄壁250/370250/370300/400DN125普通/薄壁250/370250/370300/400DN150300300300DN200300300400DN250300300400DN300400400400DN350600600600DN400700700700DN450700700700DN500700700700正常加工：即可以法兰连接也可以电熔连接。普 通 管 材 系 列规格壁厚（mm）重量（kg/m）DN50114DN65115DN8011.76DN10011.78DN12511.810DN15012.011DN20012.515DN25012.518DN30012.522DN3501528DN4001532DN4501643DN5001650
