DB64+1056-2023+预制直埋复合塑料保温供热管道应用技术规程

ICS83.140.30CCSICS83.140.30CCSG33宁夏回族自治区地方标准DB64/T1056—2023DB64/T1056-2014预制直埋复合塑料保温供热管道应用技术规程TechnicalspecificationfortheapplicationofprefabricatedTechnicalspecificationfortheapplicationofprefabricateddirectburiedcompositeplasticinsulationandheatingpipes2023080920231109宁夏回族自治区市场监督管理厅发布目 次前言 II3范引文件 3语定义 34复保管道 4PE-RTⅡ管件 6复保管标运输贮存 6计求 6一规定 6水计算 7管的置敷设 8管设应力 9建热入管门及件计 11保要求 11装施工 11一规定 11沟开挖 12管连与装 13接保温 13沟回填 13验验收 14管压试验 14管清洗 15系试行 15工验收 15附录A（料）复温管的力算 17附录B（范）管熔对焊方法 28附录C（范）管熔承焊连方法 33前 言本文件按照GB/T1.1—2020《标准化工作导则第1部分：标准化文件的结构和起草规则》的规定起草。本文件代替DB64/T1056-2014《预制直埋复合塑料保温供热管道应用技术规程》，与DB64/T1056-2014——修改了产品的适用范围；——修改了术语和定义；——修改了材料的规格尺寸至dn500mm；——增加了聚氯乙烯外护管的技术要求；——增加了PE-RTⅡ型管材及管件的颜色外观要求；——修改了复合保温管道标志、存储及运输要求；——增加了水力计算与规格选型；——修改了复合保温管道最小覆土深度；——增加了45℃及60℃冬季供暖条件分级和最大允许工作压力选型；——修改了管道连接的应用范围。本文件主要起草人：李永峰、谢翌鹤、马立新、鱼江涛、孙俪铭、雒建伍、王吉军、刘杰、赵勇、张兆元、赵明亮、邱林、李志龙、马金星、毛俊俊、赵建新、惠康康、杨迪、张会明、赵雪岩、刘潇、陈海涛、刘博文、周文怡、张小刚。本文件所代替标准的历次版本发布情况为:——DB64/T1056-2014。预制直埋复合塑料保温供热管道应用技术规程范围（85（GB/T1576工业锅炉水质GB5749生活饮用水卫生标准GB/T6111流体输送用热塑性塑料管道系统耐内压性能的测定GB/T9124.1钢制管法兰第1部分：PN系列GB/T19278GB/T19278GB/T19806GB/T19808塑料管材和管件公称外径大于或等于90mm的聚乙烯电熔组件的拉伸剥离试验GB/T19810聚乙烯(PE)管材和管件热熔对接接头拉伸强度和破坏形式的测定GB/T28799.3冷热水用耐热聚乙烯(PE-RT)管道系统第3部分:管件GB/T40402聚乙烯外护管预制保温复合塑料管GB/T50942盐渍土地区建筑技术规范GB55010供热工程项目规范GB55032建筑与市政工程施工质量控制通用规范CJJ28城镇供热管网工程施工及验收规范CJJ/T34城镇供热管网设计标准CJJ/T81城镇供热直埋热水管道技术规程TSGD2002燃气用聚乙烯管道焊接技术规则3术语和定义GB/T19278界定的以及下列术语和定义适用于本文件。GB50011建筑抗震设计规范GB50015建筑给水排水设计标准GB50025湿陷性黄土地区建筑规范GB50112膨胀土地区建筑技术规范3.1合温道 compositeinsulationpipe以耐热聚乙烯（PE-RTⅡ）树脂经挤出成型为工作内管，聚氨酯或挤塑聚苯乙烯材料为保温层，聚乙烯或聚氯乙烯材料为外护层，组成的三层一体式的复合保温管道。3.2无补敷设 installationnocompensator3.3管件fitting用于工作管道连接的附件，可以分为承插热熔管件、电熔管件、热熔管件、机械连接管件。3.4不圆度out-ofroundness在工作管材或管件的管状部位的同一截面上，最大和最小外径测量值之差，或最大或最小内径测量值之差。3.5公称外径nominaloutsidediameter本文件中的公称外径专指复合保温管道的工作内管外径的最小值。3.6外护管outprotectingpipe强度和可靠的防水性能。3.7保温层insulatinglayer强度和可靠的防水性能。3.7保温层insulatinglayer在工作管与外护管之间，为保持管道输送介质温度而设置的保温材料层。3.8插口管件spigotendfitting用于工作内管插接连接的PE-RTⅡ型管件，插口端的连接内径等于相应配套使用工作管材的公称外径（dn）。3.9热熔对接焊接buttfusionjointing3.10电熔承插焊接electricfusionjointing4材料PE-RTGB/T404022GB/T40402标准进行出厂检验项目复检，复检合格后方可使用。PE-RT1表1复合保温管道最小保温层厚度要求序号工作管公称外径（mm）保温层最小厚度（mm）1dn≤110202110＜dn≤200253200＜dn≤355354≥40045注：除设计另有规定，否则按此表执行。2表2复合保温管道聚氯乙烯外护管的规格尺寸序号外护管外径（mm）外护管最小壁厚（mm）1752.32802.53902.641102.751253.061403.071603.081803.292003.2102253.5112503.9122654.2133154.9143405.2153555.6164006.3174507.0185007.84.1.64.1.6复合保温管道的聚氯乙烯外护管物理和力学性能符合表3的规定。表3聚氯乙烯外护管物理力学性能序号项目要求1密度≤1.55g/cm32纵向回缩率≤5%3拉伸屈服应力≥38MPa4维卡软化温度≥80℃5落锤冲击试验1kg，1m无破裂160mm4.0mm；160mm≤400mm6.0mm；400mm10.0mm。PE-RTPE-RTGB/T28799.3PE-RTPE-RT251m，3m。GB50011、GB50025GB50112、GB/T50942GB55010、GB55032CJJ/T3485CJJ/T34GB/T1576GB5749带GB5001560Pa/m～100Pa/m300Pa/m3.0m/s。50kPa。（1）i0.011d4.87q1.85j g (1)式中：i ——dj——(m)；qg——管道的设计流量(m3/s)。12%～18A。4表4直埋复合保温管道最小覆土深度工作管公称外径（mm）机动车道（m）非机动车道（m）≤1250.80.6140～3151.00.7355～5001.20.9注：管道布置最小深度不符合此表或穿越机动车道时，应增加外护套管或采用混凝土防护。55.3.4湿陷性黄土地区复合保温管道与建筑物之间的距离应根据建筑物重要性及具体情况，以及场地湿陷等级和排水情况等确定，并应符合表6的规定：表5复合保温管道直埋敷设与相邻设施的最小净距5.3.4湿陷性黄土地区复合保温管道与建筑物之间的距离应根据建筑物重要性及具体情况，以及场地湿陷等级和排水情况等确定，并应符合表6的规定：名称最小水平净距(m)最小垂直净距(m)给排水管1.50.15燃气管道压力≤400kPa1.00.15压力≤800kPa1.50.15压力>800kPa2.00.15压缩空气或CO2管1.00.15排水盲沟沟边1.50.50乙炔、氧气管1.50.25公路铁路坡底脚1.0-地铁、隧道结构5.00.80电气铁路接触网电杆基础3.0-建筑物基础公称直径≤250mm2.5-公称直径≥300mm3.0-电缆通讯电缆管块1.00.30电力及控制电缆≤35kV2.00.50≤110kV2.01.00表6管道与建筑物间的防护距离各类建筑地基湿陷等级对应防护距离（m）ⅠⅡⅢⅣ甲--8～911～12乙56～78～910～12丙456～78～9丁-567注：小于本表的规定。60°～90ZGB5002550mm相同；固定墩设计应符合CJJ/T81PE-RTCJJ/T81PE-RT075.4.55.4.5PE-RT8。表8PE-RTCJJ/T81FAE103 (2)式中：F ——（kN）；E ——PE-RT（MPa）；表7供热管道运行条件分类运行条件分类运行条件设计温度TD（℃）TD下的运行时间）（年）最高运行温度Tmax）（℃）Tmax下的运行时间（年）70℃生活热水704980145℃供暖200.5604.53020452560℃供暖2012.5702.54025601075℃供暖20147515025601085℃供暖201485150257010注：当供热管网运行的设计温度和时间不同于本表，或系统的最高运行温度超过本表时，本表不适用，应咨询管道供应商，重新计算设计应力；保温复合塑料管道70℃生活热水45℃/50年冬季供暖60℃/50年冬季供暖75℃/50年冬季供暖85℃/50年冬季供暖设计应力（MPa）3.725.124.394.023.50规格最大允许工作压力，MPaS4/SDR90.931.271.091.00.88S5/SDR110.741.020.880.80.70S6.3/SDR13.60.590.810.700.630.56S8/SDR170.460.630.540.500.44注：设计应力根据表7的分类要求，采用热水塑料管道累计损伤法计算（参见GB/T18991），已考虑到设计安全系数为1.25～1.5。A ——（㎡）；λ——工作管的线性膨胀系数，一般取1.2×10-4m/（m·k）；△T——安装时温度和最高工作温度的温度差（℃）。，PE-RT。表9不同温度下PE-RTⅡ型管材的弹性模量温度（℃）204060758085弹性模量910510330220190170CJJ/T81CJJ/T34PE-RT0.4W/(m·K)，0.033W/(m·K)。CJJ28CJJ/T813m5m0.5m）CDCJJ28（3）WS(3)式中：W——Dc——mS——（m0.～4；Cm0.～.2。0.6m，0.2m0.5m。150mm～200mm±20mm-200mm～+20mm。0.2m150mm0.9150mm0.95。63mm63mmBC≤63mm63mmGB/T9124.1CJJ28BC5%。50℃0.5m300mm。400mm；0.5m200mm0.5m0.5m0.9；管顶0.5m以下各部位回填土应符合表10的规定。表10沟槽回填土压实度与回填材料填土部位压实系数回填材料管道基础管底基础≥0.9中砂、粗砂管道有效支撑角范围≥0.95管道两侧≥0.95中砂、粗砂、碎石屑，最大粒径小于40mm的砂砾或符合要求的原土管顶以上0.5m内管道两侧≥0.9管道上部0.85±0.02管顶以上0.5m～1.0m≥0.9原土7试验与验收7试验与验收管道压力试验符合CJJ285500m；0.8CJJ28（）1m/s格；5CJJ28CJJ28附录A（资料性）复合保温管道的水力计算A.1设计工况为75℃/50年条件下的S5系列复合保温管道的水力计算，参见表A.1、表A.2、A.3、A.4。表A.1单位长度沿程水头损失水力计算管系列S5SDR11公称外径dn/管内径di(mm)dn20/16.0dn25/20.4dn32/26.2dn40/32.6流量RVRVRVRVm³/hL/sPa/mm/sPa/mm/sPa/mm/sPa/mm/s0.230.071120.32340.20————0.250.071290.35390.21————0.270.081470.37450.23————0.290.081650.40510.24————0.310.091850.42570.26————0.320.092050.45630.27————0.340.102260.47690.29————0.360.102490.50760.31————0.400.112970.55910.34270.20——0.430.123530.601080.37320.22——0.470.134060.641240.40370.24——0.500.144640.691420.43420.26——0.540.155300.741620.46480.28——0.580.165950.791820.49540.30——0.610.176660.842040.52600.31210.200.650.187400.892270.55670.33230.220.680.198180.942500.58740.35260.230.720.208990.992750.61810.37280.240.900.2513581.244160.761230.46420.301.080.3019041.495830.921720.56590.361.260.3525311.747751.072290.65790.421.440.4032411.989931.222930.741010.481.620.4540322.2312351.373650.831260.541.800.5048992.4815011.534440.931530.601.980.5558442.7317901.685291.021830.662.160.6068642.9821031.836221.112140.722.340.65——24381.987211.202490.78表A.2单位长度沿程水头损失水力计算管系列S5SDR11公称外径dn/管内径di(mm)dn50/40.8dn63/51.4dn75/61.4dn90/73.6流量RVRVRVRVm³/hL/sPa/mm/sPa/mm/sPa/mm/sPa/mm/s1.000.30200.23——————1.260.35270.27——————1.440.40340.31——————1.620.45420.34140.22————1.800.50510.38170.24————1.980.55610.42200.26————2.160.60720.46230.29100.20——2.340.65830.50270.31110.22——2.520.70960.53310.34130.24——2.700.751090.57350.36150.25——2.880.801220.61400.38170.27——3.060.851370.65440.41190.293.240.901520.69490.43210.303.420.951680.72550.46230.32100.223.601.001850.76600.48250.34110.233.781.052020.80660.51280.35110.253.961.102210.84720.53300.37130.264.141.152400.88780.55330.39140.274.321.202590.92840.58350.40150.284.501.252800.95910.60380.42160.294.681.303010.99980.63410.44170.304.861.353221.031050.65440.45180.325.041.403451.071120.67470.47200.335.221.453681.111190.70500.49210.345.401.503921.141270.72540.51220.355.581.554161.181350.75570.52240.365.761.604411.221430.77600.54250.375.941.654671.261520.79640.56270.396.121.704941.301600.82680.57280.406.301.755211.341690.84710.59300.416.481.805491.371780.87750.61310.426.661.855771.411870.89790.62330.436.841.906071.451970.91830.64340.447.021.956361.492060.94870.66360.467.202.006671.532160.96910.67380.477.562.107301.602371.011000.71410.49表A.2单位长度沿程水头损失水力计算（续）管系列S5SDR11公称外径dn/管内径di(mm)dn50/40.8dn63/51.4dn75/61.4dn90/73.6流量RVRVRVRVm³/hL/sPa/mm/sPa/mm/sPa/mm/sPa/mm/s7.922.207961.682581.061090.74450.518.282.308641.752801.111180.78490.548.642.409341.833031.151280.81530.569.002.5010081.913271.201380.84570.599.362.6010841.983511.251480.88610.619.722.7011622.063771.301590.91660.6310.082.8012432.144031.351700.94710.6610.442.9013262.214301.391810.98750.6810.803.0014122.294581.441931.01800.7011.163.1014992.374861.492051.04850.7311.523.2015912.445161.542181.08900.7511.583.3016842.525461.592301.11960.7712.243.4017882.595771.642431.151010.8012.603.5018782.676091.682571.181070.8212.963.6019782.756421.732711.211120.8413.323.7020812.826751.782851.251180.8713.683.8021872.907091.832991.281240.8914.043.9022942.987441.883141.311300.9114.404.00——7801.923291.351360.9414.764.10——8161.973441.381430.9615.124.20——8532.023601.421490.9815.484.30——8932.073761.451561.0115.844.40——9202.123921.481631.0316.204.50——9702.164091.521701.0516.564.60——10102.214261.551771.0816.924.70——10512.264431.581841.1017.284.80——10932.314511.621911.1217.644.90——11352.364791.651991.1518.005.00——11782.414971.692061.17表A.3单位长度沿程水头损失水力计算管系列S5SDR11公称外径dn/管内径di(mm)dn110/90.0dn125/102.2dn160/130.8dn200/163.6流量RVRVRVRVm³/hL/sPa/mm/sPa/mm/sPa/mm/sPa/mm/s5.941.65100.26——————6.121.70100.27——————6.301.75110.27——————6.481.80120.28——————6.661.85120.29——————6.841.90130.30——————7.021.95140.31——————7.202.00140.31——————7.562.10160.33——————7.922.20170.35——————8.282.30180.36100.28————8.642.40200.38110.29————9.002.50210.39110.31————9.362.60230.41120.32————9.722.70250.42130.33————10.082.80260.44140.34————10.442.90280.46150.35————10.803.00300.47160.37————11.163.10320.49170.38————11.523.20340.50180.39————11.883.30360.52190.40————12.243.40380.53200.41————12.603.50400.55210.43————12.963.60420.57230.44————13.323.70440.58240.45————13.683.80460.60250.46————14.043.90490.61270.48————14.404.00510.63290.49————14.764.10530.64300.50————15.124.20560.66310.51————15.484.30580.68310.52————15.844.40610.69330.54100.33——16.204.50640.71340.55100.33——16.564.60660.72360.56110.34——16.924.70690.74370.57110.35——17.284.80720.75380.59120.36——表A.3单位长度沿程水头损失水力计算（续）管系列S5SDR11公称外径dn/管内径di(mm)dn110/90.0dn125/102.2dn160/130.8dn200/163.6流量RVRVRVRVm³/hL/sPa/mm/sPa/mm/sPa/mm/sPa/mm/s17.644.90740.77400.60120.36——18.005.00770.79410.61120.37——18.365.10800.80430.62130.38——18.725.20830.82450.63130.38——19.085.30860.83460.65140.39——19.445.40890.85480.66140.40——19.805.50920.86490.67150.41——20.165.60950.88510.68150.41——20.525.70980.89530.70160.42——20.885.801020.91550.71160.43——21.245.901050.93560.72170.44——21.606.001080.94580.73180.44——21.966.101110.96600.74180.45——22.326.201150.97620.76190.46——22.686.301180.99640.77190.47——23.046.401221.00650.78200.47——23.406.501251.02670.79200.48——23.766.601291.04690.81210.49——24.126.701331.05710.82210.50——24.486.801361.07730.83220.50——24.846.901401.08750.84230.51——25.207.001441.10770.85230.52——25.567.101481.11790.87240.53——25.927.201521.13810.88250.53——26.287.301551.15830.89250.54——26.647.401591.16860.90260.55——27.007.501631.18880.92260.56——27.367.601671.19900.93270.56——27.727.701721.21920.94280.57——28.087.801761.22940.95280.58100.3728.447.901801.24970.96290.58100.3828.808.001841.26990.98300.59100.3829.168.101881.271010.99300.60100.3829.528.201931.291031.00310.61100.3929.888.301971.301061.01320.61110.3930.248.402021.321081.02330.62110.40表A.3 单长沿头损水计（）管系列S5SDR11公称外径dn/管内径di(mm)dn110/90.0dn125/102.2dn160/130.8dn200/163.6流量RVRVRVRVm³/hL/sPa/mm/sPa/mm/sPa/mm/sPa/mm/s30.608.502061.331111.04330.63110.4030.968.602101.351131.05340.64110.4131.328.702151.371151.06350.64120.4131.688.802201.381181.07360.65120.4232.048.902241.401201.09360.66120.4232.409.002291.411231.10370.67120.4332.769.102341.431251.11380.67130.4333.129.202381.441281.12390.68130.4433.489.302431.461311.13390.69130.4433.849.402481.481331.15400.70130.4534.209.502531.491361.16410.70140.4534.569.602581.511391.17420.71140.4634.929.702631.521411.18430.72140.4635.289.802681.541441.20440.73150.4735.649.902731.551471.21440.73150.4736.0010.002781.571491.22450.74150.4836.9010.252911.611561.25470.76160.4937.8010.503051.651631.28490.78170.5038.7010.753181.691711.31510.80170.5139.6011.003321.731781.34540.81180.5240.5011.253461.771861.37560.83190.5341.4011.503601.811931.40580.85200.5542.3011.753751.842011.43610.87200.5643.2012.003901.882091.46630.89210.5744.1012.254051.922171.49660.91220.5845.0012.504201.962261.53680.93230.5945.9012.754362.002341.56710.94240.6146.8013.004522.042431.59730.96250.6247.7013.254682.082511.62760.98250.6348.6013.504852.122601.65781.00260.6449.5013.755012.162691.68811.02270.6550.4014.005182.202781.71841.04280.6751.3014.255362.242881.74871.05290.6852.2014.505532.282971.77901.07300.6953.1014.755712.323071.80921.09310.7054.0015.005892.363161.83951.11320.71表A.3 单长沿头损水计（）管系列S5SDR11公称外径dn/管内径di(mm)dn110/90.0dn125/102.2dn160/130.8dn200/163.6流量RVRVRVRVm³/hL/sPa/mm/sPa/mm/sPa/mm/sPa/mm/s55.8015.506262.433361.891011.15340.7457.6016.006642.513561.951071.18360.7659.4016.507032.593772.011141.22380.7861.2017.007432.673992.071201.26400.8163.0017.507832.754212.141271.30430.8354.8018.008252.834432.201341.33450.8666.6018.508682.904662.261411.37470.8868.4019.009122.984902.321481.41500.9070.2019.50——5142.381551.44520.9372.0020.00——5382.441621.48550.9573.8020.50——5642.501701.52570.9775.6021.00——5892.561781.55601.0077.4021.50——6162.621861.59621.0279.2022.00——6422.681941.63651.0581.0022.50——6702.752021.67681.0782.8023.00——6972.812101.70711.0984.6023.50——7262.872191.74741.1286.4024.00——7552.932271.78761.1488.2024.50——7842.992361.81791.1690.0025.00——8143.052451.85821.1991.8025.50————2541.89851.2193.6026.00————2641.92891.2497.2027.00————2832.00951.2899.0027.50————2932.04981.31100.8028.00————3022.071021.33102.6028.50————3132.111051.35104.4029.00————3232.151091.38106.2029.50————3342.181121.40108.0030.00————3442.221161.43109.8030.50————3542.261191.45111.6031.00————3652.291231.47113.4031.50————3752.331261.50115.2032.00————3872.371301.52117.0032.50————3992.411341.54118.8033.00————4102.441381.57120.6033.50————4212.481421.59表A.4 单长沿头损水计算管系列S5SDR11公称外径dn/管内径di(mm)dn250/204.6dn315/257.8dn355/290.6—流量RVRVRVRVm³/hL/sPa/mm/sPa/mm/sPa/mm/sPa/mm/s118.8033.00461.00150.63————120.6033.50471.02150.64————122.4034.00491.03160.65————124.2034.50501.05160.66————126.0035.00511.06170.67————127.8035.50531.08170.68————129.6036.00541.09180.69————131.4036.50561.11180.70————133.2037.00571.12190.71————135.0037.50581.14190.72100.56——136.8038.00601.15200.73100.57——138.6038.50611.17200.74100.58——140.4039.00631.18200.74100.59——142.2039.50641.20210.75100.59——144.0040.00661.21210.76110.60——147.6041.00691.27220.78110.62——151.2042.00721.28240.80120.63——154.8043.00751.30250.82120.65——158.4044.00781.33260.84130.66——162.0045.00821.36270.86130.68——165.6046.00851.39280.88140.69——169.2047.00891.42290.90140.70——172.8048.00921.45300.92150.72——176.4049.00961.48310.94150.74——180.0050.00991.52320.96160.76——183.6051.001031.55340.97160.77——187.2052.001071.58350.99170.78——190.8053.001111.61361.01180.80——194.4054.001151.64371.03190.81——198.0055.001191.67391.05190.83——201.6056.001231.70401.07200.85——205.2057.001271.73411.09200.86——208.8058.001311.76431.11210.87——212.4059.001351.79441.13220.89——216.0060.001391.82451.15230.90——219.6061.001441.85471.17240.92——表A.4 单长沿头损水计（）管系列S5SDR11公称外径dn/管内径di(mm)dn250/204.6dn315/257.8dn355/290.6—流量RVRVRVRVm³/hL/sPa/mm/sPa/mm/sPa/mm/sPa/mm/s223.2062.001481.88481.18240.93——226.8063.001521.91501.20250.95——230.4064.001571.94511.22260.96——234.0065.001611.97531.24260.98——237.8066.001662.00541.26270.99——241.2067.001712.03561.28281.01——244.8068.001762.06571.30291.02——248.4069.001802.09591.32291.04——252.0070.001852.12601.34301.05——255.6071.001902.15621.36311.07——259.2072.001952.18641.38321.08——262.8073.002002.21651.39331.10——266.4074.002052.24671.41331.12——270.0075.002102.27691.43341.14——273.6076.002162.30701.45351.15——277.2077.002212.33721.47361.16——280.8078.002262.36741.49371.17——284.4079.002322.39761.51381.19——288.0080.002372.42771.53391.20——291.6081.002432.45791.55401.22——295.2082.002482.48811.57401.23——298.8083.002542.51831.59411.25——302.4084.002602.55851.60421.26——306.0085.002652.58871.62431.28——309.6086.002712.61881.64441.30——313.2087.002772.64901.66451.30——316.8088.002832.67921.68461.32——320.4089.002892.70941.70471.34——324.0090.002952.73961.72481.36——327.6091.003012.76981.73491.37——331.2092.003072.791001.76501.39——334.8093.003132.821021.78511.40——338.4094.003202.851041.80521.42——342.0095.003262.881061.81531.43——345.6096.003322.911081.83541.44——349.2097.003392.941111.85551.46——A.2A.275A.5。表A.4 单长沿头损水计（）管系列S5SDR11公称外径dn/管内径di(mm)dn250/204.6dn315/257.8dn355/290.6—流量RVRVRVRVm³/hL/sPa/mm/sPa/mm/sPa/mm/sPa/mm/s352.8098.003452.971151.87561.47——356.4099.003523.001161.89571.49——360.00100.00——1171.91581.51——367.20102.00——1211.95601.54——374.40104.00——1261.99631.57——381.60106.00——1302.02651.60——388.80108.00——1352.06671.63——396.00110.00——1402.10691.66——403.20112.00——1442.14721.69——410.40114.00——1491.28741.72——417.60116.00——1542.22771.75——424.80118.00——1592.25791.78——432.00120.00——1642.29811.81——439.20122.00——1692.33841.84——446.40124.00——1742.37871.87——453.60126.00——1792.41891.90——460.80128.00——1852.44921.93——468.00130.00——1902.48941.96——475.20132.00——1962.52971.99——482.40134.00——2012.561002.02——489.60136.00——2072.601032.05——496.80138.00——2122.641052.08——504.00140.00——2182.671082.11——511.20142.00——2242.711112.14——518.40144.00——2302.751142.17——525.60146.00——2362.791172.20——532.80148.00——2422.831202.23——540.00150.00——2482.871232.26——547.20152.00——2542.901262.29——554.40154.00——2602.941292.32——561.60156.00——2662.981322.35——568.80158.00——2733.021352.38——表A.5其他供热温度水力计算修正系数供热温度（℃）≥7570605040修正系数1.01.021.051.081.12A.3A.6表A.6管道局部阻力系数表管路附件90°弯头直流三通旁流三通合流三通分流三通直流四通阻力系数0.3～0.50.51.51.532.0管路附件分流四通乙字弯括弯变径变大变径变小法兰连接件阻力系数3.00.51.01.00.51.5附录B（规范性）管道热熔对接焊接方法总则5～45-55B.1表B.1热熔对接焊接工艺评定检验与试验要求序号项目试验参数要求方法1拉伸性能23±2℃韧性，通过脆性，未通过GB/T198102静液压强度试验密封接头：a型；调节时间：12h；试验时间：165h；环应力：4.0MPa试验温度：95℃焊接处无破坏，无渗漏GB/T611110010B.2.1B.2.2（B.2（V）10%（图B2.图B2.3B.2.4）；图B.2.3翻切示图 图B.2.4合格心边图 图B.2.5翻背试每隔5m1图B2.55℃；0.1MPa；±10%；1B.2B.3B.4B.5、表B.6。表B.2热熔对接焊焊接工艺参数参数单位对应值加热板温度℃220-230最小初始卷边尺寸mm1-4最短吸热时间(t2)s10-12en最长切换时间(t3)s5-13热熔对接压力(P2)MPa（0.15±0.01）×A1/A2最长增压时间(t4)s5-24在焊机内最短保压冷却时间(t5)min10-602 2注：A1—管材的截面积（mm）；A2—焊机液压缸中活塞的总有效面积（mm）；en—管材的公称壁厚。B.3SDR9/S4公称直径dn(mm)管材壁厚en(mm)P2(MPa)压力=P1凸起高度(mm)压力≈P拖吸热时间t2(s)切换时间t3(s)增压时间t4(s)压力=P1冷却时间t5(min)758.4263/A21.584≤5＜6≥109010.1380/A21.5101≤6＜7≥1111012.3566/A21.5123≤6＜7≥1412514.0732/A22.0140≤6＜8≥1514015.7919/A22.0157≤8＜9≥1716017.91198/A22.0179≤8＜10≥1918020.11514/A22.5201≤8＜10≥2120022.41874/A22.5224≤8＜11≥2322525.22372/A23.0252≤10＜12≥2625027.92920/A23.0279≤10＜14≥2828031.33668/A23.0313≤12＜14≥3131535.24641/A23.5352≤12＜16≥3535539.75898/A23.5397≤12＜18≥3940044.77480/A23.5447≤12＜20≥4445050.39469/A24.0503≤12＜22≥5050055.811674/A24.0558≤12＜24≥55B.4SDR11/S5公称直径dn(mm)管材壁厚en(mm)P2(MPa)压力=P1凸起高度(mm)压力≈P拖吸热