金属法兰 - 第1部分：钢制法兰

ISO 7005-1 : 1992 (E)

E.21 Pressure/temperature (P/T) ratings for flanges made using group 2A7 materials 77

E.22 Pressure/temperature (P/T) ratings for pipeline flanges 77

Figures

1 Flanges — Types 01 to 05 7

2 Flanges — Types 11 to 15 8

3 Flange — Type 21 9

4 Ancillary components for flanges — Types 32 to 34 9

5 Illustration of flange facings (types A to J) 10

6 PN 2.5, PN 6, PN 10, PN 16, PN 25 and PN 40 flange facing dimensions 14

7 PN 20, PN 50, PN 110, PN 150, PN 260 and PN 420 flange facing dimensions 16

8 Minimum hub radius after back-facing 48

A.1 Bevel for specified wall thicknesses t 49

B.1 Acceptable bevel designs for unequal wall thicknesses 50

C.1 Recommended bevel for equal wall thicknesses t at the end of the flange hub 51

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NORME INTERNATIONALE INTERNATIONAL STANDARD МЕЖДУНАРОДНЫЙ СТАНДАРТ

50(715) © IEC:1996

CONTENTS

:current

Foreword

This document (EN 10216-3:2002) has been prepared by Technical Committee EC/TC 29, "Steel tubes and fittings for steel tubes", the secretariat of which is held by UNI.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2002, and conflicting national standards shall be withdrawn at the latest by November 2002.

This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s).

For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document.

Other Parts of EN 10216 are:

Another European Standard series covering tubes for pressure purposes is:

According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.

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ISO 657-1 : 1988 (E)

Table 1 — Dimensions and sectional properties of hot-rolled equal-leg angles (concluded)

NOTES

1. Member countries may choose, to be included in their national standards, the sizes which are required to meet their demand.
2. For the angles so chosen, only thicknesses which can be rolled in their mills to meet the demand of the users may be selected from the list of thicknesses corresponding to equal angles in table 1.
3. The sectional area has been calculated using the formula

   S = [l/2 A - l) + 0,214 6 (r_root² - 2r_toe²)] × 1/100

   where
   

   S is the sectional area, in square centimetres;
   

   l is the thickness, in millimetres;
   

   r_root is the root radius, in millimetres;
   

   r_toe is the toe radius, in millimetres;
   

   A is the leg length, in millimetres.

4. Mass is calculated on the basis of density of steel of 7,85 kg/dm³.

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