管道材料设计技术规定焊接材料的选用原则

管道材料设计技术规定接材料的选用原则2.1焊接材料的选用应根据母材的化学成份、机械性能、焊接接头型式以及耐高温、耐低温、耐腐蚀、抗裂性和采用的焊接工艺程序和焊接措施来综合考2.2选用原则：221焊接材料中的化学成份相当母材的成份。221焊后的接头强度不低于母材抗拉强度的下限值，同时也不得远大于标准规定抗拉强度的下限值。酸性焊条适用于一般受力不复杂的工况下，而碱性焊条可适用于低温状况。2.3常用的焊条和焊丝见表〜3（仅为推荐）。碳 钢 焊 条表2.3—1钢材类别焊条牌号性 质低碳钢，如Q235J422酸性焊条20R20g1020J427低氢碱性焊条碳锰钢，如16MnJ507J507RH低氢碱性焊条16MnR20MnMoJ507GR奥氏体不锈钢焊条表2.3—20Cr18Ni90Cr19Ni9A102钛钙酸性焊条

00Cr19Ni1100Cr19Ni11A002A002A钛钙酸性焊条氧化钛钙酸性焊条0Cr18Ni11Ti0Cr18Ni10Ti1Cr18Ni9TiA1320Cr17Ni12Mo2A20200Cr17Ni14Mo2A0220Cr18Ni12M02Ti1Cr18Ni12Mo2Ti不锈钢焊丝和焊剂 表2.3—3钢材类别焊 丝0Cr18Ni9H0Cr21Ni1000Cr19Ni10H00Cr21Ni100Cr18Ni10TiH0Cr20Ni10Ti1Cr18Ni9TiH0Cr20Ni10Nb0Cr17Ni12Mo2H0Cr19Ni12Mo200Cr17Ni14Mo2H00Cr19Ni12Mo00Cr18Ni12Mo2TiH00Cr19Ni12Mo22.4管道类别、射线探伤比例及合格标准，见表2.4(仅为推荐)管道类别、检验比例及合格标准 表2.4类别设计压力(P)设计温度⑴检验比例％合格批准

A任意任意100BB1iP>10MPa任意100□10MPa>P>4MPat再00CB210MPa>P>4MPat<400C20□4MPa>P>1MPat再00CB3PwiMPat再00C10□PwiMPat<400CB4PwiMPat<400C5mCCiP>10MPat再00C100□C2P>10MPat<400C20□10MPa>P>4MPat再00C2.5常用配管的焊接施工焊材的选用，见表2.5(仅为推荐)。类别设计压力(P)设计温度(t)检验比例％合格批准CC310MPa>P>4MPat<400C10m4MPa>P>1MPat再00CC44MPa>P>1MPat<400C5mPW1MPat再00CC5PW1MPa186C<t<400C——DPW1MPa-29C<t<186C——注：(1) 当设计温度tv-29C时，无论哪一类管道，均应100%射线照相检验，□级合格。氧气管道按B类管道进行检验。管道类别为：A类：极度危害和高度危害的有毒流体B类：可燃流体和一般有毒流体C类：非燃流体和无毒流体D类：非燃流体和无毒流体(PWlMPa,-29°C<t<186C)2.5材料焊条、焊丝材料20G,Q235-AQ215A,2020R16Mn2516Mn1OMnDR09Mn2VDR3.5Ni0Ni3.5MoXtD112c20G,Q235-J427J427AH08AH08AQ215A,20,2H08MnAH08MnAORJ427J42710,20,20gH08AH08AH08MnAH08MnA16MnJ427J427J50725H08AH08AH10Mn2H08MnAH08MnA16MnJ507,W7010MnDRJ427J427J5077H08AH08AH10Mn2H10Mn2H08MnAH08MnAH08Mn2MoVAJ427J427J507J507W70709Mn2VDRH08AH08MnAH08AH08MnAH10Mn2H10Mn2H08Mn2MoVA3.5NiJ427J427J5071Ni3.5MiXIH08AH08AH10Mn2W707NiW907NiW907NiDRH08MnAH08MnA5CrMo,16MR3(oJ427J427J50712Cr1MoVH08AH08AH10Mn2R3(H08MnAH08MnATC0Cr18Ni9TiA312A312A312A312A312A3120Cr19Ni9H0Cr21NiH0Cr21NiH0Cr21NiH0Cr21NiH0Cr21NiH0Cr21Ni1Cr18Ni9Ti101010101010H0C00Cr18Ni10A312A312A312A312A312A31200Cr19Ni10H00Cr21NH00Cr21H00Cr21H00Cr21H00Cr21H00Cr2