DIN-2440-1978

UDC621.643.2-034.14:621.882.082.22DEUTSCHE NORMENJun◆1978Steel Tubes西5M5Medium-Weight Suitable for Screwing2440Stahirohre;Mittelschwere GewinderohreIn the nominal widths and tube dimensions quoted,this Standard corresponds to ISO 65-1973 issued by the Inter-national Organization for Standardization (ISO),see ExplanationsScopeDimensions in mmThis Standard applies to medium-weight tubes suitable for screwing.They are suitable for nominal pressure 25 forliquids and nominal pressure 10 for air and non-hazardous gases.2Other relevant StandardsDIN2444Zinc coatings on steel tubes;quality standard for the hot galvanizing of steel tubes for installationpurposesDIN 2999 Part 1Whitworth pipe threads for tubes and fittings:cylindrical internal thread and conical externalthread:thread dimensionsD1N17100Steels for general structural purposes;quality specificationsDIN50136Testing of metallic materials;flattening test on tubes3 Dimensions,designationRegular typeConical screw thread(when ordered with screw thread)aDesignation of a medium-weight tube suitable for screwing,nominal width 40,seamlesly galvanized (B),in manu.facturing lengths:Threaded tube DIN 2440-DN 40-seamless BTable 1.CorrespondingWhit.TubeScrew threadworthUsableDistance ofsocket accordingpipeWeightTheoscrew threadto DIN 2986NomthreadsOutsideWallofreticalThreadsdiameterinaleccordinothickplain-endsocketedscrewdiam-perlengthOutsidedadiamn.Langthvidthtotubethreadetern855tube25,4mmfrom tube endDINdiamet6时min.eter2999aaaDNPart 1kg/mkgimmaxmaxmin.min.min6色10.2200.4070.4109,728287.44,93.1141740.650D.85413.157191107.34,71B.525380.8520.8581666211451213262.652211.23209551415.010,0264428,92,651581,5926,44116,311.331.8363313252442463324919.112.78139.54311442.43.253.143.17419101121415,01044B.3482483253613,5547.B031121.415,010.454.5802R26033.65051759.6141125718,21366635665212227616,566375,1830.221014.082653R388.94.058,478.6487.8841133324.117.1100114.34.512.112.4113.030393289219ī22125R5139.748516,216,7138.4301143632.11471s06R6165.14.85119,19.8163.83043.632,125.1774921)Referred to an average length of 6 mA decision with regard to the method of designation for fittings will be taken at the time when the currently existingISO Recommendations are converted to ISO Standards,due consideration being given to international practice regard.ing the designation of tubes suitable for screwing.Continued on pages 2 and 3Explanations on page 418.2.07Sole sale rights of German Standards (DIN-Normenl are withDIN 2440 engl.Preisgr.407.80Vertr,-Nr.0104