EN 773:1999

Foreword
1 Scope
2 Normative references
3 Definitions, symbols and abbreviations
4 Functional and dimensional requirements
    4.1 Dimensions of pipes and fittings
          4.1.1 Nominal sizes
          4.1.2 Internal diameters and limit deviations
    4.2 Geometry of pipes
    4.3 Geometry of fittings
          4.3.1 General
          4.3.2 Bends
          4.3.3 Branches
    4.4 Smoothness of bore
    4.5 Appearance and soundness
    4.6 Longitudinal bending moment resistance
    4.7 Interconnection
    4.8 Corrosion resistance
    4.9 Abrasion resistance
    4.10 Modification
    4.11 Coatings and linings
    4.12 Long-term behaviour
    4.13 Durability
    4.14 Sealing elements
    4.15 Mechanical strength
    4.16 Pressure classes for pipes, fittings and joints
    4.17 Watertightness
          4.17.1 Seals for joints
          4.17.2 Rigid joints
          4.17.3 Adjustable joints
          4.17.4 Flexible joints
    4.18 Restrained joints
    4.19 Temperature
    4.20 Dimensional stability
5 Test methods
    5.1 Measurement of diameters and wall thicknesses
          5.1.1 Mean internal diameter of barrels
          5.1.2 Mean external diameter of barrels
          5.1.3 Wall thickness of barrels
    5.2 Measurement of deviation from straightness of
          barrels
    5.3 Measurement of deviation from squareness of the
          ends of the pipes
    5.4 Longitudinal bending moment resistance test for
          pipes
    5.5 Crushing test for pipes with rigid behaviour
    5.6 Stiffness test for pipes with flexible behaviour
    5.7 Pressure tests
          5.7.1 Test for pipes
          5.7.2 Test for joints
          5.7.3 Test for restrained joints
    5.8 Tests for fittings
6 Quality control
7 Marking