4145 nternational Standard (ISo INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONMEKAYHAPOAHAA OPTAHW3ALWH O CTAHAAPTM3ALWW?ORGANISATION INTERNATIONALE DE NORMALISATION Non-alloy steel fittings threaded to IsO 7/1 Raccords enacier non allie, filetes suivant /so 7/1 Second edition - 1986-07-15 UDC 621.643.4 : 669.14 Ref. No. ISO 4145-1986 (E) Descriptors : pipe fittings, steel products, unalloyed steels, pipe sockets, pipe nipples, pipe bends, pipe plugs, unions, iso screw threads, designations,specifications,dimensions,symbols,provingpressure. Not for Resale Price based on 12 pages 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 mental and non-governmental, in liaison with Iso, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council. They are approved in accordance with IsO procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 4145 was prepared by Technical Committee ISo/TC 5, Ferrous metal pipes and metallic fittings. This second edition cancels and replaces the first edition (ISO 4145-1979), table 6 of which has been technically revised. Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latestedition,unlessotherwisestated. International Organization for Standardization, 1986 Printed in Switzerland Noreproductionornetworking pemitedwithout license fromIHS Not fr Resale INTERNATIONALSTANDARD ISO 4145-1986 (E) Non-alloy steel fittings threaded to IsO 7/1 1 Scope and field of application Iso 228/1, Pipe threads where pressure-tight joints are not madeonthethreads-Part1:Designation,dimensionsand This International Standard specifies requirements for non- tolerances. alloy steel fittings for threaded connections in accordance with Iso 7/1, used mainly for industrial purposes. Iso 272, Fasteners - Hexagon products - Widths across flats. 2 References Iso 2546, Seamless plain end tubes made from unalloyed steel and without quality requirements. Iso 7/1, Pipe threads where pressure-tight joints are made on the threads - Part 1 : Designation, dimensions and toler- ISo 2547, Welded plain end tubes made from unalloyed steel ances. and without quality requirements. Noreproductionornetworkingpemitedwithout licensefromHS Not for Resale