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1、阀门压力边界螺栓拧紧扭矩规范（依据APl6A和ASMEPCCT计算）表1按国标性能等级的压力边界螺栓拧紧扭矩T（单位：N.m）直径规格mm应力截面积Asmm2性能等级4.85.86.88.89.810.912.9OSmin(Nmm2)Ojo.2-in(Nmmj)340420480d16:640d16：6607209401100粗牙螺纹M836.610.012.314.118.721.127.532.2MlO5819.724.427.837.141.854.563.8M1284.334.442.548.564.772.895.1111.2M14115.454.967.977.6103.4116.
2、4151.9177.8M16156.785.2105.3120.3160.4180.5235.6275.7M18192.5117.8145.5166.3228.7249.4325.7381.1M20244.8166.5205.6235323.1352.5460.2538.5M22303.4226.9280.3320.4440.5480.6627.4734.2M24352.5287.6355.3406.1558.4609.1795.2930.6M27459.4421.7521.0595.4818.7893.111661364.4M30560.6571.8706.3807.211101210.91
3、580.91849.9M33693.6778.2961.31098.61510.61647.92151.42517.6M36816.7999.71234.91411.31940.52116.92763.83234.2细牙螺纹M8l39.210.713.215.020.122.629.534.5MlOXl64.521.927.131.041.346.460.670.9MlOX1.2561.220.825.729.439.244.157.567.3M12X1.2592.137.646.453.070.779.5103.9121.5M12l.588.136.044.450.867.776.199.9
4、116.3M14X1.5124.559.373.283.7111.6125.5163.9191.8M161.5167.291.0112.4128.4171.3192.7251.5294.4M18X1.5216.2132.3163.5186.8256.9280.2365.9428.1M18X2204.2125.0154.4176.4242.6264.6345.5404.3M20l.5271.5184.6228.1260.6358.4391.0510.4597.3M20X2258175.4216.7247.7340.5371.5485.0567.5M22X1.5333.1249.1307.7351
5、.7483.6527.6688.8806.0M22X2318.1237.9293.9335.9461.8503.8657.7769.7M241.5400.9327.1404.1461.8635.0692.7904.41058.4M24X2384.4313.7387.5442.8608.9664.3867.21014.9M27X1.5514.4472.2583.4666.7916.71000.01305.61527.8M272495.7455.1562.2642.5883.4963.71258.21472.3M301.5642.1654.9809.0924.61271.41386.91810.7
6、2118.9M30X2621.2633.6782.7894.51230.01341.81751.82050.0M33X1.5783.9879.51086.51241.71707.31862.62431.72845.6M33X2760.8853.61054.51205.11657.01807.72360.02761.7M36X1.5939.91150.41421.11624.12233.12436.13180.53721.8M362914.51119.41382.81580.32172.92370.53094.83621.6M36X3864.91058.71307.81494.62055.122
7、41.92926.93425.1表2APT6A规定的压力边界螺栓拧紧扭矩T（单位：N.m）螺柱直径D螺纹/英寸N1/in螺柱Sy=550MPa螺拴应力=275MPa螺柱Sy=720MPa螺栓应力二360MPa螺柱Sy=655MPa螺栓应力二327.5MPa张力FkN扭矩f=0.07N.m扭矩f=0.13N.m张力FkN扭矩f=0.07N.m扭矩f=0.13N.m张力FkN扭矩f=0.07N.m扭矩f=0.13N.minmm0.50012.7013253661334880一0.62515.8811407011852921550.75019.051059122206781602700.87522.
8、23982193328107253429一一1.00025.408107288488141376639一1.12528.588140413706184540925一一1.25031.75817756998123274512851.37534.938219761132028699617271.50038.1082659911727346129722611.62541.2883151263221141216532894一1.75044.4583691581277748420693636一1.87547.6384281947343356125494493一一2.00050.8084922366418
9、3644309754762.25057.15863133755997826441878512.50063.5087884635827110326068108282.62566.688一一一10406394114292.75069.858一一一11467354131683.00076.208一一一13759555171563.25082.558一162412,154218783.75095.258218518,685337663.87598.438233820,620372934.000101.608一一一一249622,68341057e填料装配应逐圈装入填料函，对于盘根类填料的深度应将每圈的
10、45切口相互交错120。，填料压紧后，填料压套进入填料函的深度应不超过填料压套有效高度的1/3。当填料为柔性石墨环时，应在填料函最下层和最上层各装填一圈盘根型填料，合同规定填料安装要求的按合同规定，填料压板应均匀压紧以保证填料压板孔和阀杆周围间隙均匀；f低温闸阀装配时应注意闸板上的泄压孔应朝向介质进口方向；g某些要求的阀杆端部有刻线或装有方向指示板的阀门，应注意关闭件（球体、塞体）的开关方位是否与指示开关的标识一致：h非圆形中法兰，不允许有明显错位，如有此种情况应经修整后再装配；i要求点焊处应点焊牢固，与介质接触的内件的点焊，应采用与主体材质一致的焊条；j组装好的成品，应作启闭动作检验，要求启闭过程无卡阻，关闭件（闸板、阀瓣、球体等）开关到位；k某些入库前不安装的外部零件必须准备齐全，入库时一并交成品库保管员。3.3API6D规范产品和合同要求编制系列号的产品即为有可追溯性要求的产品，装配时应严格执行。
