站内管道壁厚与设计压力换算基础数据L175A2510417510.59L210A1112100.53L245B1382450.56L290X421382900.48L320X461453200.45L360X521523600.42L390X561653900.42L415X601734150.42L450X651784500.40L485X701894850.39L555X802075550.37钢号或钢级（国家标准）钢号或钢级（API5L标准）基本许用应力[σ](MPa)最低屈服强度σs(MPa)焊缝系数Ф设计系数K注：1.设计系数K=[σ]/σs，基本许用应力[σ]是经查《ASME压力管道规范B31工艺管道》附录A中表A-1换算而得，温度为最低温度至100。F2.在表中黄色区域输入数据，天蓝色区域为计算结果。δ=PD2KΦσS厚与设计压力换算508512.2110.004.09508511.4410.004.3750859.2010.005.4350859.2010.005.4350858.7610.005.7150858.3610.005.9850857.7010.006.5050857.3410.006.8150857.1310.007.0150856.7210.007.4450856.1410.008.15由设计内压力P算壁厚δ由壁厚δ算设计内压力P钢管外直径D（mm）设计内压力P(MPa）管道壁厚δ(mm）管道壁厚δ(mm）设计内压力P(MPa）工艺管道》附录A中表
