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Norma Técnica
ISO 228-1:2000  
Data de Publicação : 21/09/2000
Título : Pipe threads where pressure-tight joints are not made on the threads — Part 1: Dimensions, tolerances and designation
Título Idioma Sec. : Filetages de tuyauterie pour raccordement sans étanchéité dans le filet — Partie 1: Dimensions, tolérances et désignation
Comitê : ISO/TC 5 Ferrous metal pipes and metallic fittings
Páginas : 8
Status : Em Vigor  
Idioma : Inglês
Organismo : ISO - International Organization for Standardization
Preço (R$) : 464,00
Objetivo : This part of ISO 228 specifies the requirements for thread form, dimensions, tolerances and designation for fastening pipe threads, thread sizes 1/16 to 6 inclusive. Both internal and external threads are parallel threads, intended for the mechanical assembly of the component parts of fittings, cocks and valves, accessories, etc. These threads are not suitable as jointing threads where a pressure-tight joint is made on the thread. If assemblies with such threads must be made pressure-tight, this should be effected by compressing two tightening surfaces outside the threads, and by interposing an appropriate seal. NOTE 1 For pipe threads where pressure-tight joints are made on the threads, see ISO 7-1. NOTE 2 ISO 228-2 gives details of methods for verification of fastening thread dimensions and form, and recommended gauging systems.
Normas Necessárias para a aplicação da ISO 228-1:2000
ISO 228-1:1982
ISO 228-1:1994
ISO 228-1:2000
ISO 228-2:1987
21.040.30 - Roscas de parafuso especiais
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