各类管道规格对照表

附件二：管道及规格1.管道规格（1）低压流体用焊接钢管（GB/T3092-93）和镀锌焊接钢管（GB/T3091-93）:公称直径夕卜径普通管壁厚加厚管壁厚备注I系列（英制）H系列（米制）DN6(1/8")10.210.02.002.50水压试验：普通管2.5MPa,加厚管3.0MPa。材质：Q195,Q215A,Q235A尽可能不用带*的管径；适用压力：普通管W1.6MPa,加厚管1.6MPa~2.5MPaDN8(1/4")13.513.52.252.75DN10(3/8")17.217.02.252.75DN15(1/2")21.321.32.753.25DN20(3/4")26.926.82.753.50DN25(1")33.733.53.254.00*DN32(11/4"，)42.442.33.254.00DN40(11/21')48.348.03.504.25DN50(21')60.360.03.504.50*DN65(21/2")76.175.53.754.50DN80(31')88.988.54.004.75DN100(41')114.3114.04.005.00DN125(51')139.7140.04.005.50DN150(61')168.3165.04.505.50（2）常用螺旋埋弧焊钢管（即螺旋钢管）或钢板卷管规格（DN200~2200）:（暂缺，无新）公称直径夕卜径壁厚（英制管壁厚见附件九）备注I系列（英制）H系列（米制）DN200(81')219.12196水压试验：普通管2.5MPa,加厚管3.0MPa。材质：Q195,Q215A,Q235A适用压力：普通管W1.6MPa,加厚管1.6MPa~2.5MPa8DN250(10")27327368DN300(12")323.932568DN350(14")355.637768DN400(16")406.442668DN500(201')5085296810DN600(241')6106306810DN700(28")7117306810DN800(32")8138206812DN900(36")914920681012DN1000(40")1016102061012（3）无缝钢管（GB/T8163-1999）统一采用的规格如下:公称直径外径X壁厚公称直径外径X壁厚公称直径外径X壁厚DN1014X2.0DN1518X2.0DN2025X2.5DN2532X2.5DN3238X2.5DN4045X2.5DN5057X3.0DN6576X3.5DN8089X3.5DN100108X4DN125133X4DN150159X4.5DN200219X6DN250273X7DN300325X8DN350377X10DN400426X11以上规格采用GB/T8163-1999，冋时满足中低压锅炉用无缝钢管。*DN450*480X9*DN500*530X9*:规格采用GB/T8163-1999，不满足中低压锅炉用无缝钢管壁厚要求。以下规格采用GB/T8163-1999，为大管径焊接钢管（另有Q195,Q215A,Q235A）。DN600630X9DN700720X9DN800820X9DN900920X9DN10001020X10DN11001120X10DN12001220X10DN14001420X10DN16001620X10DN18001820X11DN20002020X11注：①常用钢号：10,20,Q295,Q345，水压试验按P=2sR/D计算，但最高不超过19MPa。②国标管为米制管（U系列），英制管（I系列）见附件。（4）奥式体不锈钢管不锈钢无缝钢管（GB/T14976-94，冷拔管）仅限于DN<200时采用,不锈钢焊接钢管（GB/T12771-2000）管径范围DN8~1000，压力等级w5.0Mpa均可使用，中水压为推荐压力标准。表中管道规格为米制管（U系列），英制管（I系列）见附件。不锈钢无缝钢管（GB/T14976-94，冷拔管）采用的壁厚标准如下：公称直径外径X壁厚外径X壁厚外径X壁厚外径X壁厚外径X壁厚DN1014X1.214X1.614X2.014X2.214X3.2DN1518X1.618X2.018X2.518X2.818X3.6DN2025X1.625X2.025X2.525X2.825X4.0DN2532X1.632X2.832X3.232X3.232X4.5DN3238X1.638X2.838X3.238X3.538X5.0DN4045X1.645X2.845X3.245X3.545X5.0DN5057X1.657X2.857X3.557X4.057X5.5DN6576X2.076X3.276X3.576X5.0DN8089X2.089X3.289X4.089X5.5DN100108X2.0108X3.2108X4.0108X6.0DN125133X2.8133X3.5133X5.0133X6.0DN150159X2.8159X3.5159X5.0133X7.0DN200219X2.8219X4.0219X6.0219X8.0壁厚系列Sch5SSch10SSch20SSch40SSch80S水压压力1.5MPa2.0MPa3.5MPa6.0MPa12MPa不锈钢焊接钢管(GB/T12771-2000)采用的壁厚标准如下:DN1014X1.214X1.614X2.014X2.214X3.2DN1518X1.618X2.018X2.518X2.818X3.6DN2025X1.625X2.025X2.525X2.825X4.0DN2532X1.632X2.832X3.232X3.232X4.5DN3238X1.638X2.838X3.238X3.538X5.0DN4045X1.645X2.845X3.245X3.545X5.0DN5057X1.657X2.857X3.557X4.057X5.5DN6576X2.076X3.276X3.576X5.0DN8089X2.089X3.289X4.089X5.5DN100108X2.0108X3.2108X4.0108X6.0DN125133X2.8133X3.5133X5.0133X6.0DN150159X2.8159X3.5159X5.0133X7.0DN200219X2.8219X4.0219X6.0219X8.0DN250273X3.2273X4.0273X6.0273X8.0DN300325X3.6325X4.6325X6.0325X10.0壁厚系列Sch5SSch10SSch20SSch40SSch80S水压压力1.5MPa2.0MPa3.5MPa6.0MPa12MPa不锈钢大口径焊接钢管(GB/T12771-2000)采用的壁厚标准如下:公称直径外径X壁厚外径X壁厚外径X壁厚DN350377X4.0377X5.0377X8.0DN400426X4.0426X5.0426X8.0DN450480X4.0480X5.0480X8.0DN500530X5.0530X6.0530X10.0DN600630X6.0630X6.0630X10.0*DN700720X6.0720X7.0720X12.0*DN800820X7.0820X8.0820X12.0*DN900920X8.0920X9.0920X14.0*DN10001020X9.01020X10.01020X14.0壁厚系列Sch5SSch10SSch20S水压压力1.5MPa2.0MPa2.5MPa注：①*暂无国家标准，使用国内沿用系列(米制管)。②常用钢号：0Cr18Ni9(304),1Cr18Ni9Ti、00Cr19Ni10(304L),0Cr18Ni10Ti(321),0Cr17Ni12Mo2(316),00Cr17Ni14Mo2(316L)，详见附件十：材料对照表。