钢管外径和公称直径_

1、-作者xxxx-日期xxxx钢管外径和公称直径_【精品文档】A 系列为国际通用系列（俗称英制管） B 系列为国内沿用系列（俗称公制管） (mm)公称直径钢管外径A系列（英制管）B系列（公制管）DN1014DN 1518DN 2025DN 2532DN 3238DN 4045DN 5057DN 6576DN 8089DN 100108DN 125133DN 150159DN 200219DN 250273273DN 300325DN 350377DN 400426DN 450457480DN 500508530DN 600610630DN 700711720DN 800813820DN 9009

2、14920DN 100010161020DN 120012191220DN 140014221420DN 160016261620DN 180018291820DN 200020322020公称直径钢管外径NPS（in）DN1/2153/4201251 1/4321 1/2402502 1/2653804100512561508200102501230014350164001845045720500508225505592460061026650660287007113075076032800813348508643690091438950965401000101642105010674411

3、00111846115011684812001219501250127052130013215413501372561400142258145014736015001524各种管材公称直径与外径对照表序号公称直径DN外径De焊接钢管无缝钢管螺旋管UPVC管PP-R管PB管铝塑管铸铁排水管高密度聚乙烯管11520202022028252525325323232324323840404054048485050506506057506363635050765767575757588089759090907591001141081101101101101001101012514013312511150

4、1651591601501601220021921920020020013250273273143003253251535037737716400426426174504804801850053053019600630630公制与英制对照表八分英制十分英制公制(mm)八分英制十分英制公制(mm)八分英制十分英制公制(mm)1/64.0169733/64.51611/32.03117/32.53113/64.04735/64.54711/16(半分).0639/16(四分半).56315/64.07837/64.57823/32.09419/32.59427/64.10939/64.60921/

5、8(一分).1255/8(五分).62529/64.14141/64.64135/32.15621/32.656311/64.17243/64.67233/16(一分半).18811/16(五分半).688313/64.20345/64.70347/32.21923/32.719415/64.23447/64.73441/4(二分).2503/4(六分).750417/64.26649/64.76651279/32.21825/32.781519/64.29751/64.79755/16(二分半).31313/16(六分半).813521/64.32853/64.828611/32.34427/32.844623/64.35955/64.85963/8(三分).3757/8(七分).875625/64.39157/64.891713/32.40629/32.906727/64.42259/64.92277/16(三分半).43815/16(七分半).938