O.25O.300.40.50.60.811.21.41.560.035O.0420.0550.0680.080.1030.1230.1420.1590.16670.042O.050O.065O.0800.095O.122O.148O.1720.193O.2038O0480.0570.075O.092O.110O.142O.1730.201O.2280.2490.0540.0640.085O.1050.124O.162O.197O.231O.2620.277100.060.0720.095O.1170.139O.1820.2220.261O.297O.314-10.2110.0660.0790.105O.129O.1540.2010.247O.2900.3310.351120.0720.087O.115O.1420.1690.2210.2710.320.366O.38813(12.7)0.0790.094O.124O.154O.184O.2410.2960.3490.40.42513.50.0820.0980.1290.160.191O.2510.3080.3640.4180.444140.085O.1010.134O.1660.1980.26O.3210.3790.4350.462160.0970.116O.154O.1910.228O.3000.370.438O.504O.53617O.1030.124O.164O.203O.243O.3200.3950.468O.5390.573-17.2.无缝钢管（GB／T17395—1998）(1)外径和壁厚钢管尺寸分为普通钢管尺寸组(见表6-1)、精密钢管尺寸组(见表6-2)和不锈钢管尺寸组(见表6-3)。钢管的外径分为三个系列。第一系列：标准化钢管；第二系列：非标准化为主的钢管；第三系列：特殊用途钢管。普通钢管的外径分为系列l、2、(2)允许偏差见表6-4～表6-7。(3)长度见表6-8。(5)质量见表6-12。表6-1普通钢管的尺寸规格外径／mm壁厚／mm系列1系列2系列3单位长度理论质量／(kg／m)180.109O.131O.174O.2160.258O.3400.4190.497O.573O.610190.1150.138O.1830.228O.2720.3590.4440.5270.608O.647200.122O.1460.193O.240O.287O.379O.469O.556O.642O.6842lO.203O.253O.3020.399O.493O.586O.677O.721-21.322O.212O.265O.3170.418O.518O.6160.711O.75825O.2420.3020.3610.4770.592O.7040.815O.86925.4O.247O.30703670.4850.602O.716O.829O.88427O.2620.327O.391O.5170.6410.7630.884O.943-26.928O.2720.3390.4060.537O.6660.7930.9180.98678910(10.2)O.518O.537O.561110.592O.6150.64712O.6660.6940.7340.78913(12.7)0.74O.774O.820O.88813.5O.777O.8130.8630.937140.814O.8520.906O.98616O.9621.011.081.181.281.3617(17.2)1.041.091.171.281.391.48181.111.171.251.381.51.6191.181.251.341.481.611.731.831.92201.261.331.421.581.721.851.972.072l(21.3)1.331.4l1.511.681,831.972.12.22221.4l1.481.61.781.942.12.242.37251.631.721.862.072.282.472.642.8l2.973.1125.41.661.751.892.112.322.522.72.873.033.1827(26.9)27(26.9)1.781.882.032.272.52.712.923.113.293.4528l.851.962.112.372.612....
