EUROPEAN STANDARD. NORME EUROPÉENNE. EUROPÄISCHE NORM. EN December ICS ; ; Flanges and their joints — Bolting Part 4: Selection of bolting for equipment subject to the Pressure Equipment Direc. Norma numero: EN Titolo: Flanges and their joints – Bolting – Part 4: Selection of bolting for equipment subject to the Pressure Equipment.
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Steel flanges EN Combination of bolting materials other than the combinations shown may reduce the given temperature limits.
Bolts, screws and studs with specified property classes — Coarse thread and fine pitch thread ISO BSI also holds the copyright, em the UK, of the publications of the international standardization bodies. Classification of bolt materials for steel flanges, Class designated  ENFlanges and their joints 155-4 Circular flanges for pipes, valves, fittings and accessories, Class designated — Part 3: Home BS EN Kind of pre-treatment of bars is at the responsibility of the bolting manufacturer.
NOTE 1 The bolting ne given may be used in combination with non-standard flanges too provided that the range of application of the equipment for which the bolting is intended to be used is covered. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. For bolts and studs, the inspection certificate or the test report shall contain at least the following: Some bolting materials listed in Tables 4 and 5 are not covered 1515–4 Table 3, but tM is given in addition.
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The selection is based on commonly used materials, bolts and nuts. Bolts, screws and studs ISO NOTE 1 Final heat treatment is not necessary for bolting which are machined from adequate pre-treated bars. Compliance with a British Standard cannot confer immunity from 1515- obligations.
A list of organizations represented on this committee can be obtained on request to its secretary.
NOTE 2 Generally cold forming except rolling of external threads requires a subsequent heat treatment. For equipment according to Article 3.
Furthermore it shall be regarded that flanged joints shall remain tight under the expected operating conditions. Introduzione I sn di formazione Calendario Archivio corsi. NOTE It is the purchaser’s option to require a supply in assembled condition. The use of free-cutting steel is not permitted. Leggere attentamente le istruzioni prima di effettuare il download.
E BS EN Size px x x x x It is the purchaser’s option to decide on this. Wherever the starting material standard provides mechanical properties for this temperature range respective reference is made in Table 3. It is recommended that these kinds of bolts and nuts should be delivered as matching assemblies. Once this standard is cited in the Official Journal of the European Union 15154 that Directive and has been implemented as a national standard in at 151-4 one Member State, compliance with the clauses of this European Standard given in Table ZA.
It is not the intention to specify all possible applications but to give guidance on the most commonly applications.
EN – Flanges and their joints – Bolting – Part 4: Selection of bo –
Inchiesta pubblica preliminare UNI: It presents the UK view on standards in Europe and at the international level. Wherever the starting material standard provides mechanical properties for this temperature range respective reference is made in Table 3. Starting material shall comply with EN It specifies standards and additional requirements for dimensions, materials and technical conditions of delivery for bolting.
Concerning the connection between inspection certificate type 3.
Nuts should be obtained, preferably, by forging. InTable 4, footnote a reference to EN is added to clarify testing requirements. When bolting is used as: Politica europea sulla normazione Normazione e professioni non regolamentate.
BS EN Flanges Bolting – Free Download PDF
Wherever material combinations are listed upper suitable temperature is chosen to comply with the lowest permissible of one of them. For details of these and other benefits contact Membership Administration. Users of British Standards should make sure that they possess the latest amendments or editions.
According to this, e. The purpose of this European Standard is to provide a selection of most commonly used bolting types and bolting material combinations as well a tool for easy selection of suitable bolting for equipment. Flanges and their joints – Bolting – Part 4: For selection of bolting types and bolting material combinations other than those listed in Table 2 and Table 3 according to commonly used national standards, see Annex B.
The internal thread of the nut will usually be machined. According to this, e. In addition, the bolting manufacturer shall affirm that the product complies with this standard. The coating process is under the responsibility of the bolting manufacturer and shall take into consideration achievement of the mechanical properties of bolting, as appropriate. It covers temperature ranges of 151-4 general service of standard flanges based on PN or Class.