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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BS EN Flanges Bolting – Free Download PDF
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Flanges and their joints – Bolting – Part 4: Data entrata in vigore: It specifies standards and additional requirements for dimensions, materials and technical conditions of delivery for bolting. The bolting selection covered by this European Standard is regarded to be used for combination with flanges according to the series EN PN designated dn and the series EN Class designated flanges.
The selection is based on commonly used materials, bolts and nuts.
EN – Flanges and their joints – Bolting – Part 4: Selection of bo –
It covers temperature ranges of the general service em standard flanges based on PN or Class. NOTE 1 The bolting selection 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.
It is the purchaser’s option to decide ne this. When selecting bolting according to this European Standard it is essential to take into account other parameters such as type of fluids, corrosion hazards and relaxation at elevated temperatures.
The purpose of this European Standard is to provide a selection of most een used bolting types and bolting material combinations as well a tool for easy selection of suitable bolting for equipment.
It is not the intention to specify all possible applications but to give guidance on the most commonly applications.
According to this, e. Wherever the starting material standard provides mechanical properties for this temperature range respective reference is made in Table 3. NOTE 2 Special services and ambient conditions may require the application of coatings.
Depending on the coating used, a verification of the temperature ranges.