弯头尺寸标准及壁厚系列等级

1、管件的种类和代号DN与NPS对照表品种类别代号DNNPS注：NPS45弯头长半径45E(L)151/2大于4时弯头长半径90E(L)203/4DN=25X短半径90E(S)251（NPS）长半径异径 90E(L)R3211/4180弯头 长半径180E(L)4011/2短半径180E(S)502异径接头 同心R( C )6521/2（大小头） 偏心R( E )803三通等径T(S)9031/2异径T(R)1004四通等径CR(S)公称尺寸DN100，外径为系列，壁厚等级Sch40，材料牌号15CrMo的90短半径弯头异径CR(R)DN100-Sch40-15CrMo 90E（S） GB/T12

2、459管帽C公称尺寸DN100X80，外径为系列，壁厚等级Sch80，材料牌号16Mn的 同心异径接头翻边短接 长型SE(L)DN100X80 Sch80-16Mn R（C） GB/T12459短型SE(S)公称尺寸DN150，外径为系列，壁厚等级4.5mm，材料0Cr18Ni9的长半径弯头DN1150-4.5-0Cr18Ni9 90E(L) GB/T12459与管件连接的无缝钢管壁厚分级表公称尺寸外径公称壁厚DNPNSch5SSch10SSch40SSch80SSch10Sch2061/810.31.241.732.4181/413.71.652.243.02103/817.11.652.3

3、13.2151/221.31.652.112.773.73203/426.71.652.112.873.9125133.41.652.773.384.553211/442.21.652.773.564.854011/248.31.652.773.685.0850260.31.652.773.915.546521/2732.113.055.167.0180388.92.113.055.497.629031/2101.62.113.055.748.081004114.32.113.056.028.561255141.32.773.46.559.531506168.32.773.47.1110.97

4、2008219.12.773.768.1812.76.35250102733.44.199.2712.76.3530012323.83.964.579.5312.76.356.3535014355.63.964.786.357.9240016406.44.194.786.357.92450184574.194.786.357.92500205084.785.546.359.53550225594.785.546.359.53600246105.546.356.359.53650266607.9212.7700287117.9212.7750307626.357.927.9212.7800328

5、137.9212.7STD为标准管壁厚系列代号，XS为加强管壁厚系列代号，XXS为特加强管壁厚系列代号Sch 数字后带S者为ASME B36.19M标准中规定数据;不带者为ASME B36.10M标准中规定数据带的壁厚数据，在ASME B36.19M标准中注明与ASME B36.10M不同长半径弯头尺寸短半径弯头尺寸公称尺寸 坡口处外径 D中心至端面公称尺寸 坡口处外径 DDN系列系列90弯头A 45弯头BDN系列系列1521.31838162533.7322026.92538193242.4382533.73238224048.3453242.43848255060.3574048.3455

6、7296573765060.35776358088.989657376954490101.68088.98911451100114.310890101.613357125141.3133100114.310815264150168.3159125141.313319079200219.1219150168.315922995250273273200219.1219305127300323.9325250273273381159350355.6377300323.9325457190400406.4426350355.6377533222450457480400406.4426610254500

7、508530450457480386286550559500508530762318600610630550559838343600610630914381650660991406700711720106743875076211434708008138201219502管帽尺寸公称尺寸 坡口处外径 D长度DN系列系列E1521.318252026.925252533.732383242.438384048.345385060.35738657376388088.9895190101.664100114.310864125141.313376150168.315989200219.1219102

8、250273273127300323.9325152350355.6377165400406.4426178450457480203500508530229550559254600610630267650660267700711720267750762267800813820267长度E适用于厚度不超过“长度E时极限壁厚”栏中所列值的场合DN600及其以下的管帽，长度E1适用于厚度大于“长度E时极限壁厚”栏中所列值的场合Sch30STDSch40Sch60XSSch80Sch100Sch120Sch1401.731.732.412.412.242.243.023.022.312.313.23.

9、22.772.773.733.732.872.873.913.913.383.384.554.553.563.564.854.853.683.685.085.083.913.915.545.545.165.167.017.015.495.497.627.625.745.748.088.086.026.028.568.5611.136.556.559.539.5312.77.117.1110.9710.9714.277.048.188.1810.3112.712.715.0918.2620.62公称尺寸DN100，外径为系列，壁厚等级Sch40，材料牌号15CrMo的90短半径弯头公称尺寸DN1

10、00X80，外径为系列，壁厚等级Sch80，材料牌号16Mn的 同心异径接头公称尺寸DN150，外径为系列，壁厚等级4.5mm，材料0Cr18Ni9的长半径弯头7.89.279.272.712.715.0918.2621.4425.48.389.5310.3114.2712.717.4821.4425.428.589.539.5311.1315.0912.719.0523.8327.7931.759.539.5312.716.6612.721.4426.1930.9636.5311.139.5314.2719.0512.723.8329.3634.9339.6712.79.5315.0920.

11、6212.726.1932.5438.144.4512.79.5322.2312.728.5834.9341.2847.6314.279.5317.4824.6112.730.9638.8946.0252.379.5312.715.889.5312.715.889.5312.715.889.5317.4812.7等径三通和四通尺寸中心至端面公称尺寸 坡口处外径 D中心至端面90弯头ADN系列系列管程C出口M251521.3182525322026.9252929382533.7323838513242.4384848644048.3455757765060.357646489657376767

12、61028088.989868612790101.69595152100114.3108105105203125141.3133124124254150168.3159143143305200219.1219178178356250273273216216406300323.9325254254457350355.6377279279508400406.4426305305559450457480343343610500508530381381Sch 数字后带S者为ASME B36.19M标准中规定数据;不带者为ASME B36.10M标准中规定数据短半径弯头尺寸550559419419600610630432432650660495495700711720521521750762559559800813820597597M值1.适用于DN600及其以下的四通2.DN650及以上的三通和四通，推荐但不要求采用M长度E时长度极限壁厚E14.57253.81254.57384.83385.08385.59447.11517.62648.13768.64769.658910.9210212.712712.715212.717812.719112.720312.722912.725412.725412.7305长度E适用于厚度不超过“长度E时极限壁厚”栏中所列值的场合DN6