NEN EN 12516-1 : 2014

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Size
5 Material groups and material temperature limitations
6 Pressure/temperature (p/t) ratings
7 Temperature effects
8 Dimensions
9 Auxiliary connections
10 Requirements for special rating
11 End dimensions
12 Marking
Annex A (informative) Relationship between DN, NPS,
                       pipe inside diameter D[ni] and
                       pipe outside diameter
Annex B (normative) Radiography procedure and acceptance
                       standards
Annex C (normative) Magnetic particle examination procedure
                       and acceptance standards
Annex D (normative) Liquid penetrant examination procedure
                       and acceptance standards
Annex E (normative) Ultrasonic examination procedure and
                       acceptance standards
Annex F (informative) Methods used for establishing
                       pressure-temperature ratings
Annex G (normative) Requirement for Limited Class valves
                       in sizes DN 65 and smaller
Annex H (informative) Material groups
Annex ZA (informative) Relationship between this
                       European Standard and the Essential
                       Requirements of EU Directives 97/23/EC
Bibliography

Defines the tabulation method for determining the wall thickness of valve bodies, bonnets and covers with essentially circular cross-section made in forged, cast or fabricated steel.