ISO INTERNATIONAL STANDARD 1127 Third edition 1992-12-15 Stainless steel tubes -- Dimensions, tolerances and conventional masses per unit length Tubes en acier inoxydable -Dimensions, tolerances et masses lineiques conventionnelles Reference number [SO 1127:1992(E) Copyright In No reproduction or networking permited without license from IHS Not for Resale ISO1127:1992(E) Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through Iso technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with Iso, also take part in the work. iso collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- bodies casting a vote. International Standard Iso 1127 was prepared by Technical Committee ISO/TC 5, Ferrous metal pipes and metallic fittings, Sub-Committee SC 1, Steel tubes. This third edition,cancels andreplaces the second edition (Is0 1127:1980), of which tables 1 and 2 (now tables 3 and 4 ) have been to series 2 in these two tables. Annex A of this International Standard is for information only. ISO1992 or by any means, electronic or mechanlcal, Including photocopying and microfilm, without permisslon inwriting fromthepublisher International Organization for Standardization CasePostale56·CH-1211Genéve20·Switzerland Prlnted in Switzerland No reproduction or networking permitted without license from IHS Not for Resale INTERNATIONAL STANDARD ISO1127:1992(E) Stainless steel tubes -- Dimensions, tolerances and conventional masses per unit length 1 Scope 4.1 Tolerances on outside diameter This International Standard specifies the diameters, See table 1. thicknesses, tolerances and conventional masses per unit length of stainless steel tubes. Table1 -- Tolerances on outside diameter Tolerance Tolerance on outside diameter class Normative reference D1 ± 1,5 % 2 with ± 0,75 mm min. The following standard contains provisions which, ± 1 % D2 through reference in this text, constitute provisions with ±0,5 mm min. of this International Standard. At the time of publi- % SL'0 于 cation, the edition indicated was valid. All standards D3 with 主0,3 mm min. are subject to revision, and parties to agreements based on this International Standard are encour- ta ± 0,5 % with ± o,1 mm rnin. aged to investigate the possibility of applying the most recenteditionofthe standard indicatedbelow. Members of IEC and ISO maintain registers of cur- The tolerances on outside diameter include ovality. rently valid International Standards. Iso 5252:1991, Steel tubes -- Tolerance systems. 4.2 Tolerances on thickness See table2. 3 Dimensions Table 2 - Tolerances on thickness Tolerance The outside diameters and thicknesses of the tubes Tolerance on thickness class specified in this International Standard have been selected from Iso 4200. If thicknesses greater than ± 15 % T1 14,2 mm are needed, they should be chosen from with ±0,6 mm min. ISO4200. ± 12,5 % T2 with ± o,4 mm min. T3 ± 10 % with ± o,2 mm min. 4 Tolerances % s'2 干 T4 with ± 0,15 mm min. The tolerances permitted on the outside diameter and thickness of the tubes result from the method % S Ts of manufacture, the steel types and the heat treat- with ± 0,1 mm min. ment. The tolerances shall be selected from the values given in tables 1 and 2. The tolerances on thickness include eccentricity. 1 e with ISO No reproduction or networking permited without license from IHS Not for Resale