DIN17458新版标准规范

UDC669.14.018.8-194.56-462.311:621.643.2-034.14:621.774.3:620.1DEUTSCHE NORMJuly 1985Seamless circular austenitic stainless steel tubes丽subject to special requirementsTechnical delivery conditions17458Nahtlose kreisformige Rohre aus austenitischen nichtrostendenThis standard,together withStahlen fur besondere Anforderungen:technische LieferbedingungenDIN17440.D1N17441,DIN17455,D1N17456andDIN 17457 (July 1985 editions).supersedes DIN 17440,December 1972 edition.In keeping with current practice in standards published by the Intemational Organization for Standardization (ISO),a commahas been used throughout as the decimal marker.See Explanatory notes for connection with International Standard ISO 2604/2-1975,published by the InternationalOrganization for Standardization (ISO).The subclause marked with a single dot give specifications which are to be agreed upon at the time of ordering.The subclauses marked with two dots give specifications which are optional and may be agreed upon at the time ofordering.ContentsPagePage1 Field of application15.10Non-destructive testing.......................92 General15.11Dimensions,masses per unit length and2.1 Concept..1permissible deviations........................922Test classes...................................5.12Physical properties...........................3Classification into grades16Tests to be carried out and documents on,。,，。，,。。。。。。。。。。。。4.4g94Designation and ordering1materials testing6.1 General5Requirements .................................26.2Test site95.1 Manufacturing process.26.3Scope of test programme......................95.2As delivered c0 ndition,,,,,,,.......·.·▣，；，，。，26.4Sampling and sample preparation ..............105.3Chemical composition26.5Procedure,115.4Mechanical and technological properties........26.6Retests .,125.5Weldability.....26.7Documents on materials testing.125.6Further processing and heat treatment .........25.7Corrosion resistance...........................2Marking .....125.8 Type of condition and appearance of surface9Complaints.125.9 Leak tightness....,.,,,.,.,.,,.....9Appendix A,..............,,131 Field of application2.2 Test classes1.1 This standard applies to seamless circular tubes andTubes complylng with the requlrements ofthis slandard iaypipes (hereinafter briefly referred to as tubes)subject tobe supplied as test class 1 or test class 2 tubes.Test class 2special requirements and made from the austenitic stain-tubes are distinguished from test class 1 tubes by their hav-less steels listed in table 1.These tubes are predominantlying been subjected to a more extensive test programme.used in the construction of pressure vessels,chemical plantThe selection of the test class is at the purchaser's dis-and pipeworkcretion.The limits of application and other specifications given inthis standard shall apply except in cases where other speci-3Classification into gradesfications are given in codes of practice for specific fields ofThis standard covers tubes made from the s