内部管道壁厚计算表(根据规范编制)

＝S使用公式：OPD＋o2PYt求直管壁厚名称符号单位数值说明设计压力PMPa2.5管子外径Dmmo110许用应力MPa130查表

[σ]t焊缝系数φ1无缝钢管取1，焊接钢管查表修正系数Y0.4查表计算壁厚Smmo1.0496判断公式D/6o是否可用P/[σ]tmm18.333左边大于计算壁厚，公式可用0.0192左边小于0.385，公式可用腐蚀裕量mm1.5根据设计需要填写壁厚负偏差加工减薄量mmmm0.6250参考厂家数据附加裕量Cmm2.125包括腐蚀裕量、壁厚负偏差和加工减薄量选用壁厚Smm3.1746S＝S＋Co《石油化工管道设计器材选用通则》(SH3059-2001)《工业金属管道设计规范》(GB50316-2000)(2008年版)许用应力查《石油化工装置工艺管道安装设计手册》(第一篇)(第三版)P654查询详表钢管许用应力查询材质标准壁厚mm查询温度℃许用应力MPa20GBT8163≤15.0150130温度对计算管子壁厚公式的修正系数材料≤482510538温度℃566593≥621铁素体钢0.40.50.70.70.70.7奥氏体钢0.40.40.40.40.50.7其他金属0.40.40.40.40.40.4《石油化工管道设计器材选用通则》(SH3059-2001)《工业金属管道设计规范》(GB50316-2000)(2008年版)焊接钢管的焊缝系数序号焊接方法接头型式焊缝系数检验要求φ1锻焊(炉焊)对焊直焊缝按标准要求0.62电阻焊对焊直焊缝或螺旋焊缝按标准要求0.85无X射线探伤0.8单面对焊直焊缝或螺旋焊缝10%X射线探伤0.93电弧焊100%X射线探伤无X射线探伤10.85双面对焊直焊缝或螺旋焊缝10%X射线探伤0.9100%X射线探伤1《石油化工管道设计器材选用通则》(SH3059-2001)适用介质空气、水、循环水、冷冻水天然气、凝液、及其排污放天然气、凝液等普通介质空空适用材质20号优质碳素钢20号优质碳素钢，L29020号优质设计温度℃2020设计压力MPa1.581.58公称直径管子外径壁厚负偏差腐蚀裕度管子加工减薄量壁厚负偏差腐蚀裕度管子加工减薄量壁厚负偏差15220.51.51.1620.51.51.1620.520270.51.51.1620.51.51.1620.525340.43751.500.43751.500.437532420.43751.500.43751.500.437540480.51.500.51.500.550600.43751.500.43751.500.437565760.56251.500.56251.500.562580890.56251.500.56251.500.56251001140.6251.500.6251.500.6251251400.6251.500.6251.500.6251501680.68751.500.68751.500.68752002190.81251.500.81251.500.81252502730.81251.500.81251.500.8125300323.90.8751.500.88751.500.9875350355.611.500.88751.500.9875400406.411.500.88751.501.087545045711.500.88751.501.1875附加裕量参考数据、凝液、及其排污放天然气、凝液、及其排污放

空空号优质碳素钢，L29020号优质碳素钢，L29016Mn、L41520号优2020≤1503.394.628腐蚀裕度管子加工减薄量壁厚负偏差腐蚀裕度管子加工减薄量壁厚负偏差腐蚀裕度管子加工减薄量壁厚负偏差1.51.1620.51.51.1620.51.51.1621301.51.1620.51.51.1620.51.51.1621301.500.43751.500.43751.501301.500.43751.500.43751.501301.500.51.500.51.501301.500.43751.500.51.501301.500.56251.500.56251.501301.500.56251.500.56251.501301.500.6251.500.6251.501301.500.6251.500.81251.501301.500.68751.500.8751.501301.5013011.501301.5011.501.18751.501301.501.18751.501.38751.501301.501.28751.501.58751.501.501.38751.501.78751.501.501.48751.501.98751.5020号优质碳素钢16Mn16Mn10010010042.54腐蚀裕度管子加工减薄量壁厚负偏差腐蚀裕度管子加工减薄量壁厚负偏差腐蚀裕度管子加工减薄量壁厚负偏差0.51.50.51.51.1620.51.51.1620.50.51.50.51.51.1620.51.51.1620.50.56251.50.56251.51.4790.56251.51.4790.56250.6251.50.6251.51.4790.6251.51.4790.6250.6251.50.6251.51.4790.6251.51.4790.6250.51.50.43751.500.43751.500.43750.6251.50.56251.500.56251.500.56250.68751.50.56251.500.56251.500.56250.751.50.6251.500.6251.500.6250.81251.50.6251.500.6251.500.6250.81251.50.68751.500.68751.500.68750.8751.50.81251.500.81251.500.812511.50.81251.500.81251.50