GB9124-2000钢制管法兰技术条件.pdf

中华人民共和国国家标准钢制管法兰 技术条件Specification for steel pipe flangesGB/T 91242000代替GB/T 91241988 GB/T 91251988 GB/T 913119881 范围本标准规定了钢制管法兰的材料、尺寸公差、密封面表面粗糙度及试验、检验和验收等技术要求。本标准适用于GB/T 91129123.42000所规定的钢制管法兰。2 引用标准下列标准所包含的条文，通过在本标准中引用而构成为本标准的条文。本标准出版时，所示版本均为有效。所有标准都会被修订，使用本标准的各方应探讨使用下列标准最新版本的可能性。GB 1501998 钢制压力容器GB/T 1931981 普通螺纹 直径与螺距系列（直径1600mm）GB/T 152.41988 紧固件 六角头螺栓和六角螺母用沉孔GB/T 7001988 碳素结构钢GB/T 7111988 优质碳素结构钢热轧厚钢板和宽钢带GB/T 32741988 碳素结构钢和低合金结构钢、热轧厚钢板和钢带GB 35311996 低温压力容器用低合金钢钢板GB/T 42371992 不锈钢热轧钢板GB 66541996 压力容器用钢板GB/T 7306.12000 55密封管螺纹 第1部分：圆柱内螺纹与圆锥外螺纹（eqv ISO 7-1：1994）GB/T 7306.22000 55密封管螺纹 第2部分：圆锥内螺纹与圆锥外螺纹（eqv ISO 7-1：1994）GB/T 91122000 钢制管法兰 类型与参数GB/T 122291989 通用阀门 碳素钢铸件技术条件GB/T 122301989 通用阀门 奥氏体钢铸件技术条件GB/T 127161991 60圆锥管螺纹GB/T 149761994 流体输送用不锈钢无缝钢管GB/T 162531996 承压钢铸件JB 47262000 压力容器用碳素钢和低合金钢锻件JB 47272000 低温压力容器用碳素钢和低合金钢锻件JB 47282000 压力容器用不锈钢锻件JB/T 72481994 阀门用低温铸钢件技术条件HG 205371992 奥氏体不锈钢焊接钢管3 材料国家质量技术监督局2000-09-28批准 2001-07-01实施3.1 公称压力等级属于欧洲体系的钢制管法兰用材料应符合表1的规定；公称压力等级属于美洲体系的钢制管法兰用材料应符合表2的规定。法兰材料的化学成分、机械性能、使用温度和其他技术要求应符合表1和表2所列有关标准的规定。3.2 锻件（包括锻轧件）的级别及其技术要求应符合JB 47264728的相应要求。3.2.1 公称压力PN2.0MPa的法兰用低碳钢和奥氏体不锈钢锻件，允许采用级锻件。3.2.2 公称压力PN5.0MPa的法兰用锻件应符合级或级以上锻件的要求，3.2.1和3.2.3规定除外。3.2.3 符合下列情况之一者，法兰用锻件应符合级锻件的要求：a）公称压力PN10.0MPa的法兰用锻件；b）公称压力PN5.0MPa的法兰用铬钼钢锻件；c）公称压力PN2.5MPa且工作温度20的法兰用铁素体钢锻件。4 法兰的压力-温度等级法兰在不同工作温度下的最高无冲击工作压力应符合附录A（标准的附录）的规定。5 法兰的尺寸公差5.1 法兰的尺寸公差应符合表3的规定。5.2 环连接面的密封面尺寸公差应符合表4的规定。1GB/T 91242000表1 公称压力等级属于欧洲体系的钢制管法兰用材料材料材料钢 板锻 件铸 件钢 管组号类别钢 号标准号钢 号标准号钢 号标准号钢 号标准号1.0Q235Q235AQ235BGB/T 3274（GB/T 700）2.02020GB/T 71120JB 4726WCAGB/T 1222920RGB 665409Mn2VDRGB 353109Mn2VDJB 472709MnNiDR09MnNiD3.016MN15MnV16MnRGB 665416 MnJB 4726ZG240/450AGGB/T 1625316MnDRGB 353116MnDJB 4727LCBJB/T 724815MnVRGB 665415MnVJB 4726WCBGB/T 12229WCCGB/T 122295.01Cr-0.5Mo15CrMoRGB 665415CrMoJB 4726ZG 15Cr1MoGB/T 162536.02Cr-1Mo12Cr2Mo1RGB 150附录A（GB 6654）12Cr2Mo1JB 4726ZG12Cr2Mo1GGB/T 162536.15Cr-0.5Mo1Cr5MoJB 4726ZG16Cr5MoGGB/T 1625310.0304L00Cr19Ni10GB 423700Cr19Ni10JB 4728ZG03Cr18Ni10GB/T 1625300Cr19Ni10GB/T 14976HG 20537CF3GB/T 1223011.03040Cr18Ni90Cr18Ni9ZG07Cr20Ni10GB/T 162530Cr18Ni9CF8GB/T 1223012.03210Cr18Ni10Ti（1Cr18Ni9Ti）0Cr18Ni10Ti（1Cr18Ni9Ti）ZG08Cr20Ni10NbGB/T 162530Cr18Ni10Ti（1Cr18Ni9Ti）CF8CGB/T 12230表1（完）材料组号材料类别钢 板锻 件铸 件钢 管钢 号标准号钢 号标准号钢 号标准号钢 号标准号3.0316L00Cr17Ni14Mo2GB 423700Cr17Ni14Mo2JB 4728ZG03Cr19Ni11Mo2GB/T 1625300Cr17Ni14Mo2GB/T 14976HG 20537CF3MGB/T 1223014.03160Cr17Ni12Mo20Cr17Ni12Mo2ZG07Cr19Ni11Mo2GB/T 162530Cr17Ni12Mo2CF8MGB/T 12230注1 表列钢板仅适用于法兰盖和板式法兰。2 表列铸件仅适用于整体法兰。3 表列钢管仅适用于采用钢管制造的奥氏体不锈钢翻边环。4 Q235A仅适用于PN1.0MPa（包括PN1.0MPa）以下的法兰和法兰盖。表2 公称压力等级属于美洲体系的钢制管法兰用材料材料组号材料类别钢 板锻 件铸 件钢 管钢 号标准号钢 号标准号钢 号标准号钢 号标准号1.0Q235Q235BGB/T 3274（GB/T 700）2020GB/T 71120JB 4726WCAGB/T 1222920RGB 66541.1WCBWCBGB/T 122291.2WCCWCCGB/T 122291.316Mn16MnRGB 665416MnJB 4726ZG240/450AGGB/T 1625316MnDRGB 353116MnDJB 4727LCBJB/T 7248表2（完）材料组号材料类别钢 板锻 件铸 件钢 管钢 号标准号钢 号标准号钢 号标准号钢 号标准号1.409Mn09Mn2VDRGB 353109Mn2VDJB 472709MnNiDR09MnNiD1.9a1Cr-0.5Mo15CrMoRGB 665415CrMoJB 4726ZG15Cr1MoGB/T 162531.1021/4Cr-1Mo12Cr2Mo1RGB 150附录A（GB 6654）12Cr2Mo1JB 4726ZG12Cr2Mo1GGB/T 162531.135Cr-0.5Mo1Cr5MoJB 4726ZG16Cr5MoGGB/T 162532.13040Cr18Ni9GB 42370Cr18Ni9JB 4728ZG07Cr20Ni10GB/T 162530Cr18Ni9GB/T 14976HG 20537CF8GB/T 122302.23160Cr17Ni12Mo20Cr17Ni12Mo2ZG07Cr19Ni11Mo2GB/T 162530Cr17Ni12Mo2CF8MGB/T 12230304L00Cr19Ni1000Cr19Ni10ZG03Cr18Ni10GB/T 1625300Cr19Ni10CF3GB/T 122302.3316L00Cr17Ni14Mo200Cr17Ni14Mo2ZG03Cr19Ni11Mo2GB/T 1625300Cr17Ni14Mo2CF3MGB/T 122302.43210Cr18Ni10Ti（1Cr18Ni9Ti）0Cr18Ni10Ti（1Cr18Ni9Ti）ZG08Cr20Ni1ONbGB/T 162530Cr18Ni10Ti（1Cr18Ni9Ti）CF8CGB/T 12230注1 表列钢板仅适用于法兰盖和板式法兰。2 表列铸件仅适用于整体法兰。3 表列钢管仅适用于采用钢管制造的奥氏体不锈钢翻边环。5GB/T 91242000表3 法兰的尺寸公差 mm 项 目法 兰 型 式尺寸范围公差或极限偏差法兰厚度C双面加工的所有型式（包括锪孔）C182 018504 0法兰高度H对焊、平焊、螺纹、松套、承插焊法兰DN2501.5DN300DN6003DN7004.5焊端外径A对焊法兰、对焊环松套法兰、翻边环松套法兰DN1502.51.0DN200DN6004.01.0DN7005.51.5法兰内径B和焊环内径B1对焊法兰承插焊法兰DN1250.51.0DN150DN3001.01.5DN3502.5除以上两种以外的其他型式DN1251. 00DN150DN600+1.50DN700DN1 000+3.00DN1 200+4.00法兰外径D所有型式DN1502.0DN200DN5003.0DN600DN1 2005.0DN1 4007.0密封面直径d所有型式（PN为0.25、0.6、1.0、1.6、2.5、4.0、6.3、10.0和16.0MPa）DN2502.01.0DN3003.01.0所有型式（PN为2.0、5.0、11.0、15.0、26.0和42.0MPa）f21.0f=70.5凹凸面和榫槽面高度f1所有型式所有尺寸0.50f200.5表3（完） mm 项 目法 兰 型 式尺寸范围公差或极限偏差凹凸面和榫槽面直径W、Y所有型式所有尺寸0.50X、Z所有尺寸00.5螺栓孔中心圆直径K所有型式M10M241.0M27M331.25M36M521.5M562.0相邻两螺栓孔的弦距所有型式M10M240.5M27M330.625M36M520.75M561.0任意两螺栓孔的弦距所有型式DN5001.0DN600DN1 2001.5DN1 4002.0螺栓孔直径L所有型式DN100.5螺栓孔中心圆与加工密封面的同轴度公差所有型式DN651.0DN80DN1502.0DN200DN5004.0DN6006.0密封面与螺栓支承面的夹角所有型式DN101表4 环连接面的密封面尺寸公差 mm 项 目极 限 偏 差环槽深度E+0.40环槽顶宽度F0.2环槽中心圆直径P0.13环槽角度230.5环槽四角Rmax0.1密封面直径d0.56 法兰连接密封面6.1 法兰密封面的加工表面粗糙度应符合表5的规定。根据供需双方协商，用户也可按表6的规定选用密封面表面粗糙度，但应在订货合同中注明。环连接密封面的环槽最低硬度值应比所用的金属环垫的最大硬度值高30HB。6.2 突面法兰的密封面允许按f45倒角。6.3 当使用非金属软垫片时，突面法兰密封面上允许加工水线，但应在订货合同中注明。7 法兰连接用螺栓用户应根据法兰的压力、温度、材料和所选择的垫片来选择螺栓材料，以保证法兰连接在预期的操作条件下保持紧密。螺纹规格小于或等于M45的螺栓，建议使用GB/T 193中的粗牙系列；螺纹规格大于或等于M48的螺栓，建议使用GB/T 193中相同螺距为4mm的细牙系列。表5 未注要求时密封面的表面粗糙度密封面型式密封面代号Ra，m密纹水线尺寸，mmminmax深度水线节距加工刀具圆角全平面、突面、凹凸面FF、RF、FM3.26.3全平面突面（加工密纹水线，仅用于软垫片）FF（A）RF（A）3.212.50.050.81.6榫槽面TG0.83.2环连接面RJ0.41.6表6 订货要求时密封面的表面粗糙度垫 片 型 式Ra，m非金属平垫片6.3、12.5（加工水线）柔性石墨复合垫片6.3、12.5（加工水线）聚四氟乙烯包覆垫片6.3、12.5（加工水线）齿形组合垫片3.2、6.3缠绕式垫片3.2、6.3金属包覆垫片碳钢1.6、3.2不锈钢0.8、1.6金属环垫碳钢、铬钢0.8、1.6不锈钢0.4、0.88 法兰颈8.1 带颈的平焊、对焊、螺纹、承插焊和松套法兰，其法兰颈应为圆柱形。允许在法兰颈外侧具有不超过7的拔模斜度。8.2 法兰与钢管焊接的坡口型式及尺寸见附录B（提示的附录）。9 法兰的机加工9.1 法兰的螺栓支承面应进行机加工或锪孔，锪孔尺寸按GB/T 152.4的有关规定。加工后的法兰厚度应保证符合表3规定的极限偏差要求。9.2 螺纹法兰的螺纹加工要求应符合GB/T 7306.1、GB/T 7306.2和GB/T 12716的有关规定。9.3 所有螺栓孔应均等地分布在螺栓孔中心圆直径上；对于整体式法兰，其螺栓孔应与管道主轴线或铅垂线跨中布置。10 法兰的试验10.1 管法兰原则上不进行单个法兰的水压试验。当法兰安装到管道或设备上之后，其水压试验压力应不得大于附录A中所规定20时最高无冲击工作压力的1.5倍。10.2 整体式法兰的水压试验应符合有关产品标准的规定。11 法兰的检验和验收11.1 外观检验11.1.1 锻造表面应光滑，不得有锻造伤痕、裂纹等缺陷。11.1.2 机加工表面不得有毛刺、有害的划痕和其他降低法兰强度及连接可靠性的缺陷。11.1.3 环连接面法兰的密封面应全部逐项检查，槽的两个侧面不得有机械加工引起的裂纹、划痕或撞伤等表面缺陷。11.2 法兰材料应符合有关标准的规定，并应具有出厂检验合格证。11.3 法兰加工质量应符合本技术条件的各项规定。11.4 法兰加工完毕后，应在其密封面上涂防锈油，并防止划伤和撞击。11.5 法兰的无损探伤检验由用户与制造厂协商确定。11.6 法兰的验收规则由用户与制造厂协商确定。12 标志除整体式法兰外，每个法兰（包括法兰盖）的外圆柱表面上应做以下标志：a）制造厂的商标：b）材料标志；c）公称压力PN及公称通径DN。注：PN值按bar的数值标记。附 录 A（标准的附录）钢制管法兰 压力-温度等级A1 总则本附录中给出的压力-温度等级仅适用于按表中所规定的材料制造的法兰。本附录中给出的各种材料的压力-温度等级是指在所示温度下的最高无冲击工作压力（以表压计）。对于中间温度的压力，允许用线性插值法计算。A2 公称压力等级属于欧洲体系的法兰的压力-温度等级PN0.25、PN0.6、PN1.0、PN1.6、PN2.5、PN4.0、PN6.3、PN10.0和PN16.0 MPa法兰的压力-温度等级在表A1表A9中给出：这些等级仅适用于公称通径为DN10DN600的带颈对焊法兰、带颈平焊法兰、带颈螺纹法兰、整体法兰和法兰盖。对于板式平焊法兰、平焊环板式松套法兰、对焊环板式松套法兰和翻边环板式松套法兰以及公称通径为DN600以上的带颈对焊法兰、带颈平焊法兰、整体法兰和法兰盖，其压力-温度等级由使用者确定。表A1表A9所列的法兰材料组号按本标准表1的规定。表中铁素体钢100的最高无冲击工作压力值可使用至120，奥氏体不锈钢20的最高无冲击工作压力值可使用至50。A3 公称压力等级属于美洲体系的法兰的压力-温度等级PN2.0、PN5.0、PN11.0、PN15.0、PN26.0和PN42.0 MPa法兰的压力-温度等级在表A10表A15中给出。表A10表A15所列的法兰材料组号按本标准表2的规定。当采用其他材料时，法兰压力-温度等级可根据材料许用应力按表A10表A15折算，但不得大于表A16所列的数值。A4 法兰连接的等级如果相连接的两个法兰具有不同的压力-温度等级值，在任何温度下法兰连接处的等级都不应超过在相应温度下两个法兰等级中的较低者。A5 使用说明A5.1 相应的压力等级所示的工作温度，可认为是所容纳的介质的温度。若使用与所容纳的介质不同的温度来选用压力等级时，应由使用者负责，但要服从任何适用的规范或条例的要求。A5.2 本标准中的等级用于法兰连接时，应考虑到由于管道连接中产生的力和力矩而引起的泄漏的危险。因此，在温度变化急剧和热循环工况下，温度高于260时，建议不使用承插焊和螺纹法兰。A5.3 工作温度在材料蠕变温度范围时，法兰连接处的逐渐松弛会连续地降低螺栓载荷以致影响连接的紧密性。因此，有必要定期地拧紧螺栓以防止泄漏。A5.4 PN2.0MPa的法兰工作温度超过200和PN5.0MPa的法兰工作温度超过400时，应避免法兰承受急剧的温度变化和外加载荷，否则可能降低法兰的密封性能。表A1 PN0.25MPa法兰最高无冲击工作压力 MPa 材料组号工作温度，201001502002503003504004254504755005105205301.00.250.250.2250.20.1750.152.00. 250.250.2250.20.1750.150.1250.0883.00.250.250.2450.2380.2250.20.1750.1380.1135.00.250.250.250.250.250.250.2380.2280.2230.2180.2050.1850.1550.1230.0956.00.250.250.250.250.250.250.250.2280.2230.2180.20.1380.1250.110.0956.10.250.250. 250.250.250.250.250.2510.00.2230.2010.180.1630.1520.1410.1340.1290.1240.2111.00.2340.2120.1910.1740.1610.150.1430.1390.1360.13312.00.2470.2310.2170.2060.1940.1860.1790.1730.1690.16613.00.2410.2210.2010.1860.1740.1610.1540.150.1440.14214.00.250.2340.2120.1970.1860.1730.1670.160.1570.154注：工作温度高于表列温度时，缺乏确切的数值。表A2 PN0.6MPa法兰最高无冲击工作压力 MPa材料组号工作温度，201001502002503003504004254504755005105205301.00.600.600.540.480.420.362.00.600.600.540.480.420.360.30.213.00.600.600.590.570.540.480. 420.330.275.00.600.600.600.600.600.600.570.5460.5340.5220.4920.4440.3720.2940.2286.00.600.600.600.600.600.600.600.5460.5340.5220.480.330.30.2640.2286.10.600.600.600.600.600.600.600.6010.00.540.480.430.390.370.340.320.310.30.2911.00.560.510.460.420.390.360.340.330.330.3212.00.590.550.520.490.470.450.430.420.410.413.00.580.530.480.450.420.390.370.360.350.3414.00. 60.560.510. 470.450.420.40.380.380.37注：工作温度高于表列温度时，缺乏确切的数值。表A3 PN1.0MPa法兰最高无冲击工作压力 MPa材料组号工作温度，201001502002503003504004254504755005105205301.01.01.00.90.80.70.62.01.01.00.90.80.70.60.50.353.01.01.00.980.950.90.80.70.550.455.01.01.01.01.01.01.00.950.910.890.870.820.740.620.490.386.01.01.01.01.01.01.01.00.910.890.870.80.550.50.440.386.11.01.01.01.01.01.01.01. 010.00.890.80.720.650.610.560.540.520.50.4811.00.940.850.760.70.640.60.570.560.540.5312.00.990.920.870.820.780.740.720.690.680.6613.00.960.880.80.740.70.640.620.60.580.5714.01.00.940.850.790.740.690.670.640.630.62注：工作温度高于表列温度时，缺乏确切的数值。表A4 PN1.6MPa法兰最高无冲击工作压力 MPa材料组号工作温度，201001502002503003504004254504755005105205301.01.61.61.441.281.120.962.01.61.61.441.281.120.960.80.563.01.61.61.571.521.441.281.120.880.725.01.61.61.61.61.61.61.521.4561.4241.3921.3121.1840.9920.7840.6086.01.61.61.61.61.61.61.61.4561.4241.3921.280.880.80.7040.6086.11.61.61.61.61.61.61.61.610.01.431.291.151.050.970.90.860.820.80.7811.01.51.361.221.121.030.960.920.890.870.8512.01.581.481.391.321.241.191.141.111.081.0613.01.541.421.291.191.121.030.990.960.920.9114.01.61.51.361.261.191.111.071.021.00.99注：工作温度高于表列温度时，缺乏确切的数值。表A5 PN2.5MPa法兰最高无冲击工作压力 MPa材料组号工作温度，201001502002503003504004254504755005105205302.02.52.52.252.01.751.51.250.883.02.52.52.452.382.252.01.751.381.135.02.52.52.52.52.52. 52.382.282.232.182.051.851.551.230.956.02.52.52.52.52.52.52.52.282.232.182.01.381.251.10.956.12.52.52.52.52.52.52.52.510.02.232.011.81.631.521.411.341.291.241.2111.02.342.121.911.741.611. 51.431.391.361.3312.02.472.312.172.061.941.861.791.731.691.6613.02.412.212.011.861.741.611.541.51.441.4214.02.52.342.121.971.861.731.671.61.571.54注：工作温度高于表列温度时，缺乏确切的数值。表A6 PN4.0MPa法兰最高无冲击工作压力 MPa材料组号工作温度，201001502002503003504004254504755005105205302.04.04.03.63.22.82.42.01.43.04.04.03.923.83.63.22.82.21.85.04.04.04.04.04.04.03.83.643.563.483.282.962.481.961.526.04.04.04.04.04.04.04.03.643.563.483.22.22.01.761.526.14.04.04.04.04.04.04.04.010.03.573.222.882.612.442.262.152.061.991.9411.03.753.43.062.792.582.42.292.222.172.1312.03.953.73.473.293.112.972.862.772.72.6513.03.863.543.222.972.792.582.472.42.312.2814.04.03.753.43.152.972.772.672.562.512.47注：工作温度高于表列温度时，缺乏确切的数值。表A7 PN6.3MPa法兰最高无冲击工作压力 MPa材料组号工作温度，201001502002503003504004254504755005105205302.05.285.104.854.474.103.723.152.213.06.36.36.175.995.675.044.413.472.845.06.36.36.36.36.36.35.995.735.615.485.174.663.913.092.396.06.36.36.36.36.36.36.35.735.615.485.043.473.152.772.396.16.36.36.36.36.36.36.36.310.05.615.044.544.138.43.533.43.283.153.1311.05.925.364.794.414.033.783.593.533.43.3412.06.245.85.485.174.914.664.544.354.284.1613.06.055.545.044.664.414.033.913.783.653.5914.06.36.115.85.485.234.914.734.64.474.41注：工作温度高于表列温度时，缺乏确切的数值。表A8 PN10.0MPa法兰最高无冲击工作压力 MPa材料组号工作温度，201001502002503003504004254504755005105205302.08.48.17.77.16.55.95.03.53.010.010.09.89.59.08.07.05.54.55.010.010.010.010.010.010.09.59.18.98.78.27.46.24.93.86.010.010.010.010.010.010.010.09.18.98.78.05.55.04.43.86.110.010.010.010.010.010.010.010.010.08.98.07.26.56.15.65.45.25.04.811.09.48.57.67.06.46.05.75.65.45.312.09.99.28.78.27.87.47.26.96.86.613.09.68.88.07.47.06.46.26.05.85.714.010.09.48.57.97.46.96.76.46.36.2注：工作温度高于表列温度时，缺乏确切的数值。表A9 PN16.0MPa法兰最高无冲击工作压力 MPa材料组号工作温度，201001502002503003504004254504755005105205302.013.413.012.311.410.49.48.05.63.016.016.015.715.214.412.811.28.87.25.016.016.016.016.016.016.015.214.614.213.913.111.89.97.86.16.016.016.016.016.016. 016.016.014.614.213.912.88.88.07.06.16.116.016.016.016.016.016.016.016.010.014.312.911.510.59.79.08.68.28.07.811.015.013.612.211.210.39.69.28.98.78.512.015.814.813.913.212.411.911.411.110.810.613.015.414.212.911.911.210.39.99.69.29.114.016.015.013.612.611.911.110.710.210.09.9注：工作温度高于表列温度时，缺乏确切的数值。表A10 PN2.0MPa法兰最高无冲击工作压力 MPa工作温度材 料 组 号1.01.11.21.31.41.9a1.101.132.12.22.32.4381.581.962.01.841.631.832.02.01.91.91.591.9501.531.921.921.811.61.761.921.921.841.841.531.841001.421.771.771.731.481.671.771.771.571.621.321.591501.351.581.581.581.451.581.581.581.391.481.21.442001.271.41.41.41.41.41.41.41.261.371.11.322501.151.211.211.211.211.211.211.211.171.211.021.213001.021.021.021.021.021.021.021.021.021.020.971.023500.840.840.840.840.840.840.840.840.840.840.840.843750.740.740.740.740.740.740.740.740.740.740.740.744000.650.650.650.650.650.650.650.650.650.650.650.654250.560.560.560.560.560.560.560.560.560.560.560.564500.470.470.470.470.470.470.470.470.470.470.470.474750.370.370.370.370.370.370.370.370.370.370.375000.280.280.280.280.280.285250.190.190.190.190.190.195400.130.130.130.130.130.13表A11 PN5.0MPa法兰最高无冲击工作压力 MPa工作温度材 料 组 号1.01.11.21.31.41.9a1.101.132.12.22.32.4383.955.115.174.794.254.745.175.174.964.964.144.96503.855.015.174.734.174.685.125.174.784.814.04.81003.564.645.154.513.864.664.95.154.094.223.454.151503.394.525.024.43.774.644.665.023.633.853.123.752003.184.384.884.273.664.554.484.883.283.572.873.442502.884.174.634.063.474.454.424.633.053.342.673.213002.573.874.243.773.234.244.244.242.913.162.523.053502.393.74.023.63.094.024.024.022.813.042.42.933752.293.653.883.533.093.883.883.882.782.972.362.894002.193.453.453.243.033.663.663.662.752.912.322.864252.122.882.882.732.583.513.513.452.722.872.272.854501.962.02.01.981.963.383.383.092.692.812.232.824751.351.351.351.351.353.173.172.592.662.742.85002.782.782.032.612.682.785252.032.191.542.392.582.585501.281.641.172.182.52.55750.851.170.882.012.412.286000.590.760.651.672.141.986251.311.831.586501.051.411.256750.781.260.987000.60.990.777250.460.770.627500.370.590.487750.280.460.388000.210.350.3表A12 PN12.0MPa法兰最高无冲击工作压力 MPa工作温度材 料 组 号1.01.11.21. 31.41.9a1.101.132.12.22.32.4387.910. 2110.349.578.519.4810.3410.349.939.938.279.93507.7510.0210.349.468.349.3810.2410.349.579.637.999.61007.129.2810.319.027.729.329.8110.318.188.446.98.31506.789.0510.048.797.549.279.3310.047.277.76.257.52006.368.769.768.547.319.18.979.766.557.135.746.872505.768.349.278.126.948.898.849.276.116.685.346.413005.147.758.497.546.468.498.498.495.816.335.056.113504.787.398.057.196.198.058.058.055.616.084.815.873754.587.297.767.066.177.767.767.765.555.944.725.784004.386.96.96.486.067.327.327.325.495.824.635.734254.245.755.755.465.167.027.026.95.435.734.545.74503.924.014.013.963.926.766.766.185.375.624.455.644752.712.712.712.712.716.336.335.185.315.475.65005.565.564.055.215.375.565254.054.383.084.785.165.165502.553.272.344.364.994.995751.72.341.764.014.824.566001.181.531.313.344.293.966252.623.653.166502.12.822.56751.552.531.977001.21.991.547250.931.541.247500.731.10.967750.560.910.758000.410.70.61表A13 PN15.0MPa法兰最高无冲击工作压力 MPa工作温度材 料 组 号1.01.11.21.31.41.9a1.101.132.12.22.32.43811.8515.3215.5214.3612.7614.2315.5215.5214.8914.8912.4114.895011.615.0215.5214.1912.5214.0615.3615.5214.3514.4411.9914.3910010.6813.9115.4613.5311.5813.9914.7115.4612.2612.6610.3512.4515010.1713.5715.0613.1911.3113.9113.9915.0610.911.559.3711.252009.5413.1514.6412.810.9713.6413.4514.649.8310.78.6110.312508.6412.5213.912.1810.4113.3413.2713.99.1610.028.019.623007.7111.6212.7311.319.6912.7312.7312.738.729.497.579.163507.1711.0912.0710.799.2812.0712.0712.078.429.137.218.83756.8710.9411.6410.599.2611.6411.6411.648.338.917.088.684006.5710.3510.359.729.0910.9810.9810.988.248.736.958.594256.368.638.638.197.7410.5310.5310.358.158.66.818.544505.876.016.015.945.8710.1410.149.278.068.426.688.464754.064.064.064.064.069.59.57.777.978.218.45008.348.346.087.828.058.345256.086.584.637.167.747.745503.834.913.56.547.497.495752.553.512.646.027.236.846001.762.291.965.016.435.946253.925.484.746503.164.243.746752.333.792.957001.792.982.37251.392.311.867501.11.761.447750.841.371.138000.621.050.91表A14 PN26.0MPa法兰最高无冲击工作压力 MPa工作温度材 料 组 号1.01.1l.21.31.41.9a1.101.132.12.22.32.43819.7525.5325. 8623.9421.2723.725.8625.8624.8224.8220.6824.825019.325.0425. 8623.6520.8623.4325.625.8623.9224.0619.9823.9910017.823.1925. 7722.5519.3123.3124.5225.7720.4421.117.2420.7515016.922.6125.121.9818.8623.1923.3225.118.1719.2515.6118.7520015.921.9124. 3921.3418.2822.7422.4224.3916.3817.8414.3517.1925014.3520.8623.1720.2917.3622.2322.1123.1715.2716.6913.3516.0330012.8519.3721.2118.8516.1521.2121.2121.2114.5315.8112.6215.2735011.9518.4820.1217.9815.4620.1220.1220.1214.0315.2112.0214.6737511.4518.2319.417.6615.4319.419.419.413.8814.8511.814.4640010. 917.2517.2516.215.1518.2918.2918.2913.7314.5611.5814.3142510.614.3814.3813.6512.8917.5517.5517.2513.5814.3311.3514.244509.7910.0210.029.99.7916.916.915.4513.4314.0411.1314.14756.776.776.776.776.7715.8315.8312.9513.2813.6814.0150013.913.910.1313.0313.4113.952510.1310.967.7111.9412.912.95506.388.185.8410.9112.4812.485754.255.854.4110.0412.0511.396002.943.823.268.3610.729.96256.549.137.96505.267.066.246753.886.324.927002.994.973.847252.313.853.17501.832.942.47751.42.281.888001.031.751.52表A15 PN42.0MPa法兰最高无冲击工作压力 MPa工作温度材 料 组 号1.01.11.21.31.41.9a1.101.132.12.22.32.43833.1542.5543.139.8935.4639.5143.143.141.3641.3634.4641.365032. 641.7343.139.4234.7739.0742.6743.139.8640.133.339.9810029.9538.6542.9537.5932.1838.8540.8742.9534.0735.1728.7434.5915028.437.6941.8336.6331.4338.6438.8641.8330.2832.0926.0231.2520026.736.5240.6635.5630.4737.937.3740.6627.329.7323.9128.6525024.1534.7738.6133.8228.9337.0636.8538.6125.4527.8222.2526.7230021.632.2835.3531.4226.9135.3535.3535.3524.2126.3621.0425.4535020.0530.833.5329.9725.7733.5333.5333.5323.3825.3820.0424.4537519.230.3932.3429.4325.5232.3432.3432.3423.1324.7519.6724.140018.3528.7528.7527.025.2530.4930.4930.4922.8924.2619.2923.8642517.823.9623.9622.7521.4929.2529.2528.7522.6423.8918.9223.7345016.3216.6916. 6916.516.3228.1728.1725.7622.3923.418.5523.4947511.2911.2911. 2911.2911.2926.3826.3821.5822.1422.823.3550023.1623.1616.8921.7222.3623.1652516.8918.2712.8519.921.4921.4955010.6413.649.7318.1820.820.85757.089.757.3416.7320.0818.996004.96.365.4413.9317.8616.5162510.915.2113.166508.7611.7710.46756.4610.538.197004.988.296.47253.856.425.167503.044.94.07752.333.83.138001.712.922.52表A16 压力等级等级美洲体系的钢制管法兰最高工作压力额定值 MPa温度PN2.0PN5.0PN11.0PN15.0PN26.0PN42.0382.05.1710.3415.5225.8643.1501.925.1710.3415.5225.8643.11001.775.1510.3115.4625.7742.951501.585.0210.0415.0625.141.832001.44.889.7614.6424.3940.662501.214.639.2713.923.1738.613001.024.248.4912.7321.2135.353500.844.028.0512.0720.1233.533750.743.887.7611.6419.432.344000.653.667.3210.9818.2930.494250.563.517.0210.5317.5529.254500.473.386.7610.1416.928.174750.373.176.339.515.8326.385000.282.785.568.3413.923.165250.192.585.167.7412.921.495500.131）2.54.997.4912.4820.85752.414.827.2312.0520.086002.144.296.4310.7217.866251.833.655.489.1315.216501.412.824.247.0611.776751.262.533.796.3210.537000.991.992.984.978.297250.771.542.313.856.427500.591.11.762.944.97750.460.911.372.283.88000.350.71.051.752.921）PN2.0MPa的最高额定工作压力值为540时的值。附 录 B（提示的附录）钢制管法兰焊接接头型式和坡口尺寸B1 本附录规定了钢制管法兰（包括焊环）与钢管连接的焊接接头型式和坡口尺寸。B2 板式平焊法兰和平焊环松套板式法兰与钢管连接的焊接接头型式和坡口尺寸应符合图B1和表B1的规定。 t管子公称壁厚；b坡口宽度f2f1451 f1t f2tt50图B1表B1公称通径DN1020255085150200250300350600坡口宽度b45681012公称通径DN7001 2001 4001 6001 8002 000坡口宽度b1314161820B3 小于或等于PN2.5MPa的带颈平焊法兰与钢管连接的焊接接头型式和坡口尺寸应符合图B2和表B2的规定。大于或等于PN4.0MPa的带颈平焊法兰与钢管连接的焊接接头型式和坡口尺寸应符合图B2和表B3的规定。tt管子公称壁厚；b坡口宽度f2f145l50f1t f2t图B2表B2公称通径DN1020255085150200250300350600坡口宽度b45681012表B3公称通径DN1020255085100125150200250坡口宽度b456810公称通径DN300350400450500600坡口宽度b1414161820B4 对焊法兰的焊接坡口型式及尺寸应符合图B3的规定。当法兰与薄壁、高强度管子连接时，其焊接坡口型式及尺寸应符合图B4的规定。37.52.537.52.57min21SA7maxBNR310145max207min45max7maxSA21BN522A焊颈端部外径（管子外径）;B法兰内径（等于管子的公称内径）；S法兰焊端壁厚（等于管子的公称壁厚）注1 当法兰与公称壁厚小于4.8mm的铁素体钢管连接时，根据制造厂的选择，焊端可加工成略有切边或直角坡口。2 当法兰与公称壁厚为3.2mm或小于3.2mm的奥氏体不锈钢管连接时，焊端应加工成略有切边坡口。图B3S2S1S1SS(法兰)(法兰)(法兰)ttt(管子)(管子)(管子)18max(1:3)14min(1:4)SS118max(1:3)14min(1:4)18max(1:3)14min(1:4)18max(1:3)14min(1:4)注1 当相连材料具有相同的屈服强度时，应取消最小值限制。2 S1+S2、S1、S2不应超过0.5t。3 当相连材料屈服强度不同时，焊缝的机械性能应等于或大于两屈服强度的较大值，同时S值至少应等于管子壁厚t乘以管子和法兰的屈服强度之比，但不应大于1.5t。图B4B5 承插焊法兰与钢管连接的焊接坡口型式及尺寸应符合图B5的规定。f11.4t但不大于颈厚f12t45 t管子公称壁厚图B5B6 对焊环松套法兰和翻边环板式松套法兰的翻边环与钢管连接的焊接坡口型式及尺寸应符合图B6的规定。对焊环侧钢管侧122137.52.537.52.5注：当对焊环与公称壁厚3.2mm奥氏体钢管连接时，钝边可取消。图B6附 录 C（提示的附录）钢制管法兰 计算质量C1 本附录中给出的钢制管法兰近似计算质量，仅供设计、制造、建设和施工等单位作工程询价、报价、预算等工作时参考。C2 本附录中的法兰近似计算质量均以突面法兰作为计算基准，其他密封面型式的法兰质量可参考表中的数值适当增减。C3 法兰计算质量不作为检测法兰的技术指标。C4 各种类型的法兰近似计算质量见表C1表C10。 表C1 带颈螺纹钢制管法兰近似计算质量 kg公称通径公 称 压 力 PN， MPa（bar）DNmm0.6（6）1.0（10）1.6（16）2.5（25）4.0（40）2.0（20）5.0（50）11.0（110）15.0（150）100.330.570.570.570.57150.380.640.640.640.640.420.650.831.87200.590.940.940.940.940.601.181.502.55250.731.151.151.151.150.821.411.833.85321.191.841.841.841.841.101.802.574.57401.422.182.182.182.181.412.533.586.29501.612.902.902.902.902.073.154.7411.31652.203.413.413.873.873.514.706.9716.18803.254.004.004.824.823.986.459.8114.621003.705.055.056.486.485.6110.0419.9425.791254.826.556.558.788.786.6012.8333.3843.571505.918.588.5811.5711.578.2517.3243.1058.8120013.4125.8669.94112.025017.8036.98116.5155.630028.3552.78151.1215.335036.8874.78181.9263.140048.7794.60261.4332.645052.30115.5340.4467.750066.67140.9442.5605.960094.27209.8657.61 091.8 表C2 对焊钢制法兰近似计算质量 kg公称通径公 称 压 力 PN， MPa（bar）DNmm0.25（2.5）0.6（6）1.0（10）1.6（16）2.5（25）4.0（40）6.3（63）10.0（100）16.0（160）2.0（20）5.0（50）11.0（110）15.0（150）26.0（260）42.0（420）100.340.340.590.590.590.591.091.091.09150.390.390.680.680.680.681.191.191.190.540.800.871.871.872.87200.590.590.970.970.970.972.002.002.900.781.411.532.552.553.20250.730.711.161.161.161.162.662.662.661.121.721.863.783.784.53321.181.181.891.891.891.893.383.384.601.462.252.574.394.396.54401.401.402.202.202.202.204.094.095.921.863.113.486.066.069.31501.561.562. 932.932.932.934.555.988.282.693.794.3510.8010.8013.38651.971.973.323.323.93.95.737.9110.84.405.746.39314.0714.0718.90803.113.113.983.985.085.086.698.9512.95.117.748.4913.4414.8229.331003.623.624.894.896.856.859.6613.7019.67.2912.0017.4621.8122.5543.781254.494.496.246.249.299.2915.1022.7030.69.4316.0528.6835.9244.6173.311505.555.558.178.1712.1512.1521.9030.2042.211.5921.2933.9646.7050.60113.62008.328.3211.4211.1616.8421.634.9052.8065. 619.1732.2052.2386.9182.93154.625011.2911.2915.0115.9923.2635.7649.6081.40106.425.6747.0186.02117.4138.6300.530015.1415.1418.0321.7630.7649.3668.70122.0153.238.9966.64102.9156.6195.6414.835019.6819.6825.2632.1048.3671.3594.60165.053.3095.69124.0181.2265.440022.8522.8530.7940.8163.11100.1124.0214.568.50121.0174.9223.3339.145026.5426.5436.2956.6077.00107.479.99150.2214.4302.7470.850030.6130.6142.6877.2398.21133.4101.0181.6288.9378.6590.160042.0342.0362.2590.60114.4214.3139.0265.0380.8674.2949.370042.2542.2578.9092.47139.480051.0551.0591.18110.7183.790056.8056.80107.1129.0220.2100062.0462.04124.1170.1285.5120082.9495.72183.4243.11400105.9137.6246.2312.21600135.4164.9345.4445.11800162.8210.2418.1599.02000190.8266.4517.7657.42200240.0330.6639.12400278.5398.7766.72600307.6475.7883.12800385.7548.71065.03000432.9615.61274.0表C3 带颈平焊钢制管法兰近似计算质量 kg公称通径公 称 压 力 PN， MPa（bar）DNmm1.0（10）1.6（16）2.5（25）4.0（40）2.0（20）5.0（50）11.0（110）15.0（150）26.0（260）100.560.560.560.56150.630.630.630.630.410.630.751.751.75200.930.930.930.930.581.161.352.342.34251.121.121.121.120.7981.371.583.503.50321.791.791.791.791.071.752.154.014.01402.122.122.122.121.372.472.995.535.53502.822.822.822.822.013.063.709.809.80653.303.303.733.733.404.565.3413.7613.76803.853.854.644.643.846.257.1411.551004.814.816.216.215.409.7414.8919.411256.206.208.408.406.2912.3924.8932.681507.847.8410.7110.717.8216.7629.9642.1720010.189.9215.0615.3912.7524.9344.8779.1225012.7513.5921.1322.5416.7835.5972.84101.730014.8218.1428.1831.3826.9150.9185.89133.735023.2628.3046.3548.5035.2472.60101.7154.340028.8536.6259.4271.5846.4691.63144.1187.345033.4049.6171.4583.0049.26111.6177. 4258.750040.1868.6889.36100.262.94136.0225.3336.960056.03107.4129.2201.888.11202.1314. 0601.1表C4 带颈承插焊钢制管法兰近似计算质量 kg公称通径公 称 压 力 PN， MPa（bar）DNmm2.0（20）5.0（50）11.0（110）150.420.640.75200.601.151.35250.831.371.58321.121.762.15401.432.532.99502.072.913.71653.534.435.20804.016.167.13表C5 对焊环板式松套钢制管法兰近似计算质量 kg公 称 压 力 PN， MPa（bar）公称通径DNmm1.0（10）1.6（16）2.5（25）4.0（40）法 兰对焊环法 兰对焊环法 兰对焊环法 兰对焊环100.550.160.550.160.550.160.550.16150.610.210.610.210.610.210.610.21200.840.330.840.330.840.330.840.33250.990.420.990.420.990.420.990.42321.650.581.650.581.650.581.650.58401.850.711.850.711.850.711.850.71502.471.012.471.012.471.012.471.01652.761.192.761.193.041.473.041.47803.011.583.011.583.612.103.612.101003.782.023.782.025.182.975.182.971254.572.744.572.746.894.046.894.041506.223.386. 223.388.695.438.695.432008.015.397.725.3911.68.3115.0010.8425010.207.2811.107.4217.0010.9123.918.3330012.309.2214.2010.4622.2015.5833.426.9635016.1014.8118.4017.9732.3026.1548.0039.9340020.9018.6323.7022.5842.8034.5469.7058.3845025.2021.4635.1030.4150.4039.1772.7059.2650031.1026.4249.1039.5263.9054.1292.1076.4860043.6033.7881.5053.2898.4071.66150.0110.8表C6 板式平焊钢制管法兰近似计算质量 kg公称通径公 称 压 力 PN， Mh（bar）DNmm0.25（2.5）0.6（6）1. 0（10）1.6（16）2.5（25）4.0（40）100.310.310.530.530.530.53150.350.350.590.590.590.59200.530.530.850.850.850.85250.640.621.011.011.011.01321.051.051.671.671.671.67401.221.221.911.911.911.91501.351.352.532.532.532.53651.691.692.942.943.263.26802.712.713.363.364.084.081002.982.984.124.125.745.741253.583.585.095.097.787.781504.414.416.746.749.779.772006.456.458.779.2513.7217.392508.418.4111.2313.0519.4828.4830011.2311.2313.9818.1725.8640.7535016.0516.0521.0527.2040.8062.1840018.9818.9826.5834.8454.0288.1145023.6123.6131.6145.1563.2990.1650027.1127.1139.0362.7482.56118.460037.7837.7853.0794.29125.2187.070072.2780.74800123.9144.2900180.6217.81 000246.8306.91 200415.1569.01 400650.2925.01 600906.11 355.91 8001 230.11 921.02 0001 652.02 630.0表C7 对焊环带颈松套钢制管法兰近似计算质量 kg公称通径公称压 力 PN， MPa（bar）DN2.0（20）5.0（50）11.0（110）15.0（150）26.0（260）42.0（420）mm法 兰焊 环法 兰焊 环法 兰焊 环法 兰焊 环法 兰焊 环法 兰焊 环150.530.150.710.150.710.151.650.151.710. 222.980.28200.730.191.260.191.300.282.230.282.300.283.360.36250.890.281.470.281.510.403.300.403.430.524.750.52321.170.401.860.402.060.573.760.573.920.746.900.91401.480.482.650.482.860.685.210.685.390.889.671.28502.100.982.980.983.480.988.700.989.571.5314.141.81653.561.484.471.485.061.8912.091.8913.462.3119.143.15803.962.086.142.086.742.6510.763.2317.243.2330.064.961005.572.8910.052.8914.324.4718.825.2626.875.2645.787.631256.335.3712.565.3723.606.4231.347.4751.267.0076.4210.151507.677.8016.427.8027.8310.6340.1010.6360.5610.89117.413.7220012.6711.4724.4211.4742.0415.6379.4917.72103.016.13163.122.3825016.5618.6738.8518.6775.6924.40105.024.4181.025.09307.233.6930027.2024.1855. 7524.1890.8531.92141.431.92285.234.23423.753.5935039.2930.8081. 0030.80108.940.15161.640.15385.441.4140052.0041.08104.941.08154.853.23199.653.23490.454.3945056.2152.59128.652.59218.568.10278.168.10635.270.8650073.4066.72156.066.72275.786.13387.786.13764.689.0060099.8380.00235.180.00346.6105.6696.4105.61 221.0118.3表C8 平焊环板式松套钢制管法兰近似计算质量 kg公 称 压 力 PN， MPa（bar）公称通径DNmm0.6（6）1.0（10）1.6（16）2.5（25）4