管道壁厚对照表.doc

（一）无缝碳钢管壁厚mm
材料PN
MPaDN10152025324050658010012515020025030035040045050060020
12CrMo
15CrMo
12Cr1MoV≤1.62。533333。53。544444。5567788892。52。533323.53.544444.55677889104.02。533333。53。5444。555。578910111213156.43333.53.53。544。5567891112141617192210。033。53。544.54.55678910131518202216.044.55566789111315192426303420.044。556678911131518222832364。0T3.5444.5555。510Cr5Mo≤1.62.533333.53。544。5444。55。577888892。52.533333。53。544.5454。55.57789910124.02。533333。53.544.555。56891011121415186。43333。5444。555。5789111314161820222610.033。5444。555。57891012151822242616。044。555678910121518222832364020.044。55678911121518222634384。0T3。5444.5555.516Mn
15MnV≤1。62。52.52。533333.53。53.53.544.555。5666672。52.52.52。533333。53。53.53。544.555.5677894。02。52。52。533333.53。544.55678891011126.42.53333。53。53。544.55678911121314161810。0333。53。5444.556789111315171916.03.53。544.55567891112161922252820.03.544.555.5678911131519242630（二)无缝不锈钢管壁厚mm
材料PN
MPaDN1015202532405065801001251502002503003504004505006001Cr18Ni9Ti
含Mo不锈钢≤1.02222.52.52。52.52.52。5333。53。53.5444.51.622。52。52.52.52。5333333.53.544.5552。522。52.52.52.52.53333。53.544.556674。022.52.52.52。52.5333。544.556789106。42.52.52。53333。544。55678101113144。0T33.53.54444。5（三）焊接钢管壁厚mm
材料PN
MPaDN20025030035040045050060070080090010001100120014001600焊接碳钢管
（Q235A20）0.2555555556666667770.6556666677778889101.055666778899101111121。66677889101112131415162.57899101112131516焊接不锈钢管0。2533333。53。53。54444.54。50.6333.53。53.5444.555661。03.53。544。54。555。567781。644。55667789102。556789910121315内压金属直管的壁厚根据SH3059—2001《石油化工管道设计器材选用通则》确定：当S0〈Do/6时,直管的计算壁厚为：S0=PD0/（2［σ］tΦ+2PY）直管的选用壁厚为:S=S0+C式中S0――直管的计算壁厚，mm；P――设计压力，MPa；D0――直管外径，mm；［σ］t――设计温度下直管材料的许用应力，MPa;Φ――焊缝系数,对无缝钢管，Φ＝1；S――包括附加裕量在内的直管壁厚，mm；C――直管壁厚的附加裕量，mm；Y――温度修正系数，按下表选取.温度修整系数表
钢管壁厚表示方法有管子表号、钢管壁厚尺寸和管子重量三种方法
1）是以管子表号"Sch"表示壁厚。
管子表号是管子设计压力与设计温度下材料许用应力的比值乘1000，并经圆整后的数值。即：Sch＝P/［σ］t×1000
ANSIB36。10壁厚等级:Sch10、Sch20、Sch30、Sch40、Sch60、Sch80、Sch100、Sch120、Sch140、Sch160十个等级；
ANSIB36。19壁厚等级：Sch5s、Sch10s、Sch40s、S
2）以钢管壁厚尺寸表示中国、ISO、日本部分钢管标准采用
ch80s四个等级；表示英