JB各种规格法兰尺寸标准.doc

焊接平式钢制法兰盘标准尺寸表（Pg=10Kg/cm2）单位（mm）法 兰 盘焊 接螺 栓连接凸缘密封表面公称直径管子外径（法兰内径）管子外径 和法兰盘 内径之间 最大距离法兰盘外 径和公差螺栓中 心距直 径和公 差直 径高度沟纹 间的 距离沟纹 宽度沟纹 数法兰 盘厚 度及 公差螺栓 孔直 径及 公差法兰盘 重量 （Kg）焊缝 高度管壁 最小 厚度法兰 盘管 端距 离数量螺纹长度DgdhDD1D2hgg1BdQKSHne10140.4390+0.8760+0.7440241212+0.4314+0.430.463344M124515180.5295+0.8765+0.7445241212+0.4314+0.430.613344M124520250.52105+0.8775+0.7458241214+0.4314+0.430.753344M124525320.62115+0.8785+0.8768241214+0.4314+0.430.8943.554M124532380.62135+1.0100+0.8778241216+0.4318+0.521.4043.554M165540450.62145+1.0110+0.8988341218+0.5218+0.521.7143.554M166050570.74160+1.0125+1.0102341218+0.5218+0.522.0943.554M166070760.74180+1.15145+1.0122341220+0.5218+0.522.845464M166580890.87195+1.15160+1.0138351320+0.5218+0.523.245464M16651001080.87215+1.15180+1.15158351322+0.5218+0.524.015468M16701251331.0245+1.15210+1.15188351324+0.5218+0.525.405468M16701501591.0280+1.35240+1.15212351324+0.5223+0.526.1254.568M20752002191.0335+1.35295+1.35268351324+0.5223+0.528.247688M20752502731.0390+1.55350+1.35320351326+0.5223+0.5210.7981012M20803003251.0440+1.55400+1.55370451328+0.5223+0.5212.9981012M20903503771.0500+1.8460+1.55430451328+0.5223+0.5215.71091116M20904004261.0565+1.8515+1.8482451330+0.6225+0.5221.81091116M22904504782.0615+1.8565+1.8532451330+0.625+0.5224.41091120M22905005292.0670+2.0620+1.8585451332+0.6225+0.5227.71091120M221006006302.0780+2.0725+1.8685551336+0.6230+0.5239.41091120M27100焊接平式钢制法兰盘标准尺寸表（Pg=1Kg/cm2）单位（mm）图号：1B503-3法 兰 盘螺栓孔管子公称 直径管子外径（法兰内径）管子外径 和法兰盘 内径之间 最大距离螺栓中心 距直径和 公差法兰盘 外径和 公差法兰盘 厚度及 公差孔径螺栓数量螺栓直径 及公差焊接缝隙焊缝高度法兰重量Dgd0eD1Dbd HK1K2(Kg)200219129533518238M208686.72582731350390202312M208688.23003251395435202312M2086109.33503771.5445485202312M2086109.94004261.5495535202316M20861011.24504781.5550590202316M208610135005291.5600640202316M20861014.16006301.5705755202520M22861018.97007201.5810860202524M27861024.48008202920975203024M27861030.4900920210201075203024M27108103410001020211201175203028M271081037.211001120212201280243032M271081053.812001220213401400243432M301081061.4130013202.514401500243432M301081066.4140014202.515601620243436M301081280.4150015202.516601720243436M301081286160016202.517601820243440M301081291180018202.519702045244144M3610812113200020202.521802265284848M4210812156220022202.523902475284852M4210812176240024202.526002685284856M4210812204说明： 1.法兰盘材料为A3，电焊条用T422. 2.法兰盘表面应是光滑的，不得有气泡 裂缝斑点、毛刺及其他降低法兰强度和 法兰连接可靠性的缺陷。

3.法兰所用的螺栓、螺母及垫片 见1B503-13本表中法兰重量一项不包括 螺栓螺母的重量 4.表中尺寸D1、D、d及螺栓孔数确定原 则如下： Dg200、Dg250系列按JB78-59 ，Pg=10Kgf/cm2确定，以便于 配Pg=10kg/cm2的阀门； Dg300-Dg2400系列 按JB78-59,Pg=6Kgf/cm2确定，以便于配 专用阀门 5.尺寸D1、d的公差按GB159-59的8级精 度，尺寸D、b的公差按GB159-59的9级精 度，相邻两螺栓孔 之间的弦长允许偏差为±0.6mm，任意两 螺栓孔之间的弦长总偏差为 当Dg≤500mm时，不超过±1mm; 当Dg=600-1200mm时，不超过±1.5mm; 当Dg=1300-1400mm时，不超过±2mm.8Pg=1kgf/cm2 平式钢制法兰焊接平式钢制法兰盘标准尺寸表（Pg=6Kg/cm2）单位（mm）法 兰 盘焊 接螺 栓连接凸缘密封表面 公称直 径管子外 径 （法兰 内径）管子外径 和法兰盘 内径之间 最大距离法兰盘外 径和公差螺栓中 心距直 径和公 差直径高度沟纹 间的 距离沟纹 宽度沟纹 数法兰 盘厚 度及 公差螺栓 孔直 径及 公差法兰盘 重量 （Kg）焊缝 高度管壁 最小 厚度法兰 盘管 端距 离数量螺纹长度DgdhDD1D2hgg1BdQKSHne10140.4375+0.7450+0.7435241212+0.4312+0.430.313344M104015180.5280+0.8755+0.7440241212+0.4312+0.430.343344M104020250.5290+0.9765+0.7450241214+0.4312+0.430.543344M104525320.62100+0.8775+0.7460241214+0.4312+0.430.6443.554M104532380.62120+1.090+0.8770241216+0.4314+0.431.1043.554M125040450.62130+1.0100+0.8780341216+0.4314+0.431.2243.554M125050570.74140+1.0110+0.8790341216+0.4314+0.431.3543.554M125070760.74160+1.0130+1.0110341216+0.4314+0.431.675464M125080890.87185+1.10150+1.0128351318+0.5218+0.522.485464M16601001080.87205+1.15170+1.0148351318+0.5218+0.522.895464M16601251331.0235+1.15200+1.15178351320+0.5218+0.523.945468M16651601591.0260+1.35225+1.15202351320+0.5218+0.524.4754.568M16652002191.0315+1.35280+1.35258351322+0.5218+0.528.077688M16702502731.0370+1.55335+1.35312351324+0.5218+0.528.03981012M16703003251.0435+1.65395+1.55365451324+0.5223+0.5210.3981012M20753503791.0485+1.59445+1.55415451326+0.5223+0.5212.61091112M20804004261.0535+1.8495+1.55465451328+0.5223+0.5215.21091116M20904504782.0590+1.8550+1.8520451328+0.5223+0.5217.61091116M20905005292.0640+2.0600+1.8570451330+0.5223+0.5220.71091116M20906006302.0755+2.0705+2.0670551330+0.6225+0.5226.61091120M22907007202.0860+2.2810+2.2775561.5332+0.6225+0.5237.11091124M221008008202.0975+2.2920+2.2880561.5332+0.6230+0.6246.21091124M271009009202.01075+2.41020+2.4980561.5334+0.6230+0.6255.11091124M27110100010202.01175+2.41120+2.41080561.5336+0.6230+0.6257.31091128M27110hdSPg=6Kgf/cm2 钢制平式法兰试验压力P（用t<100℃的水柱压） Kg/cm2在介质温度℃为右栏 所示时最大工作压力 Kg/cm2公称直径 Dg(mm)965.5510-1000焊接平式钢制法兰盘标准尺寸表（Pg=16Kg/cm2）单位（mm）图号：1 标 2001法 兰 盘焊 接螺 栓连接凸缘密封表面公称直径管子外径（法兰内径）管子外径 和法兰盘 内径之间 最大距离法兰盘外 径和公差螺栓中 心距直 径和公 差直 径高度沟纹 间的 距离沟纹 宽度沟纹 数法兰 盘厚 度及 公差螺栓 孔直 径及 公差法兰盘 重量 （Kg）焊缝 高度管壁 最小 厚度法兰 盘管 端距 离数量螺纹长度DgdhDD1D2hgg1BdQKSHne10140.4390+0.8760+0.7440241214+0.4314+0.430.553344M124515180.5295+0.8765+0.7445241214+0.4314+0.430.713344M124520250.52105+0.8775+0.7458241216+0.4314+0.430.873344M125025320.62115+0.8785+0.8768241218+0.5214+0.431.1743.554M125532380.62135+1.0100+0.8778。