EN 10253-1:1999

Foreword
1 Scope
   1.1 Scope
   1.2 Limitation of use
   1.3 Technical delivery conditions
2 Normative references
3 Definitions and symbols
   3.1 Definitions
   3.2 Symbols
4 Information to be supplied by the purchaser
   4.1 Mandatory information
   4.2 Options
   4.3 Examples
5 Manufacturing process
   5.1 Steelmaking process
   5.2 Fitting-making process and heat treatment
6 Metallurgical properties
   6.1 Chemical composition
   6.2 Mechanical characteristics
   6.3 Weldability
7 Dimensions and tolerances
   7.1 Dimensions
   7.2 Tolerances and dimensions
   7.3 End finishing
8 Appearance, imperfections and repair
   8.1 Appearance
   8.2 Imperfections
   8.3 Repair
9 Inspection and testing
   9.1 General
   9.2 Inspection documents
   9.3 Summary of inspection and testing
   9.4 Inspection and test methods
10 Marking
11 Protection and packaging
Annex A (normative) Alternative specification for all types
        of fittings
      A.1 Steel grade
      A.2 Dimensions
Annex B (informative) A-deviation

This European Standard specifies requirements for steel butt-welding fittings (elbows and return bends, concentric and eccentric reducers, equal and reducing tees, dished ends and caps) made of wrought carbon steel and delivered without specific inspection. The fittings described in this European Standard do not fulfil specific design requirements; consequently they cannot be considered as conforming to the Essential Requirements of the Pressure Equipment Directive (Directive 97/23/EC of 29.05.1997).