Foreword
1 Scope
2 Normative references
3 Definitions
4 Measuring devices
4.1 General requirements
4.1.1 Accuracy of measuring devices
4.1.2 Calibration
4.2 Instruments
4.2.1 Contact instruments
4.2.2 Non contact instruments
5 Procedures for dimension determination
5.1 General
5.2 Wall thicknesses
5.2.1 General
5.2.2 Maximum and minimum wall thicknesses at
any point
5.2.3 Mean wall thickness
5.3 Diameters
5.3.1 General
5.3.2 Measurement of maximum and minimum diameter
5.3.3 Determination of mean outside diameter
5.3.4 Determination of mean inside diameter
5.3.5 Calculation of mean diameter
5.4 Out of roundness
5.5 Pipe lengths
5.6 Other measurements
Annex A (normative) Determination of other measurements
of glass reinforced thermosetting products
A.1 End squareness of pipes and fittings
A.1.1 General
A.1.2 Principle
A.1.3 Procedure
A.2 Bends
A.2.1 General
A.2.2 Angular change and effective length
A.2.3 Design lengths
A.2.4 Radius of curvature
A.3 Branches
A.3.1 General
A.3.2 Main pipe
A.3.3 Branch pipe
A.4 Reducers
A.4.1 General
A.4.2 Effective length
A.4.3 Design length
A.4.4 Length of the tapered section
A.5 Flanges, loose flanges and collar
A.5.1 General
A.5.2 Outside diameter of the flange, loose flange
and collar
A.5.3 Bore diameter of the flange or collar
A.5.4 Bolt hole diameter
A.5.5 Bolt hole distribution
A.5.6 Concentricity of bolt circle diameter
A.5.7 Bolt circle diameter
A.5.8 Shoulder diameter of flange and collar
A.5.9 Flange and collar thickness
A.5.10 Length of the flange and collar
Bibliography