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90°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Ⅰ系列，壁厚等级Sch40，材料牌号异径CR(R)DN100-Sch40-15CrMo 90E（S） GB/T12459管帽C公称尺寸DN100X80，外径为Ⅱ系列，壁厚等级Sch80，材料牌翻边短接长型SE(L)DN100X80 ⅡSch80-16Mn R（C） GB/T12459短型SE(S)公称尺寸DN150，外径为Ⅰ系列，壁厚等级4.5mm，材料0Cr18DN1150-4.5-0Cr18Ni9 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DNPNSch5SSch10SSch40SSch80SSch1061//810.31.241.732.4181//413.71.652.243.02103//817.11.652.313.2151//221.31.652.112.773.73203//426.7 1.652.112.873.9125133.41.652.773.384.553211//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//2101.62.113.055.748.081004114.32.113.056.028.561255141.32.773.46.559.531506168.32.773.47.1110.972008219.1 2.773.768.1812.7250102733.44.199.27※12.730012323.8 3.96 ※4.57※9.53※12.76.3535014355.63.96 ※4.786.3540016406.44.19※4.786.35450184574.19※4.786.35500205084.78※5.546.35550225594.78※5.546.35600246105.546.356.35650266607.92700287117.92750307626.357.927.92800328137.92STD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DNⅠ系列Ⅱ系列90°弯头A 45°弯头BDNⅠ系列1521.31838162533.72026.92538193242.42533.73238224048.33242.43848255060.34048.345572965735060.35776358088.9657376954490101.68088.98911451100114.390101.613357125141.3100114.310815264150168.3125141.313319079200219.1150168.315922995250273200219.1 219305127300323.9250273273381159350355.6300323.9 32545719040...
