文档介绍：质量合格证书 certificationoffitness原材料 raw uracy焊缝角变形weldinglineangulardistortion水平度levelness铅垂度verticality翘曲变形bucklingdeformation角尺anglesquare对接焊缝buttweld母材parentmetal法兰密封面flangesealingsurface夹层interlayer表面锈蚀浓度surfacecorrosionconcentration挠曲变bendingdeformation超声波探伤ultrasonictesting/ultrasonicexamination压力容器pressurevessel预制下料prefabricationbaiting排版直径set-typediameter焊缝weldingline中幅板?centerplate测量方法measuringmethod基准点datummark跳焊skipwelding允许偏差allowablevariation补强板stiffeningplate开孔tapping对接接头banjofixingbuttjointing角钢angleiron安装基准圆installationfundamentalcircle吊装立柱hoistinguprightcolumn焊接钢管weldedsteelpipe向心斜拉筋centripetalcantingpullrope带板bandplate槽钢胀圈channelsteelexpansionring环口collarextension局部变形localdistortion环缝circumferentialweld顶板topplate拱顶vault顶板加强肋stiffeningrib对接buttjoint胎具clampingfixture卷板机platebendingrolls中心支架centerbearingbracket椭圆度ovality等分线bisectrix搭接宽度lapwidth点焊spotwelding搭接焊overlapwelding对称:ponentpart机械损伤mechanicaldamage缩孔shrinkagecavityenfoldment折迭碳钢管carbonsteeltube公称直径nominaldiameter预埋件embeddedpart轴测图axonometricdrawing布置图arrangementdiagram氧乙炔气割oxyacetylenegascutting低合金钢管lowalloysteel热影响区heataffectedarea修磨polish砂轮片grindingwheel等离子plasmapanel重皮coldlap凹凸unevenness缩口neckingdown端面headface倾斜偏差dipdeviation外径externaldiameter砂轮grindingwheel管件pipecasting单线图singlelinedrawing平齐parallelandlevel两端twoterminals满扣buckle螺栓紧固bolton周边periphery附加应力additionalstress同轴度axiality平行度parallelism随机stochasti