NBN EN 39 : 2001

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and designation
   4.1 Classification
   4.2 Designation
5 Information to be supplied by the purchaser
   5.1 Mandatory information
   5.2 Options
   5.3 Examples of ordering
6 Manufacturing process
   6.1 Steelmaking process
   6.2 Tube manufacture
7 Requirements
   7.1 General
   7.2 Chemical composition and mechanical properties
   7.3 Appearance
   7.4 Straightness
   7.5 External weld bead and preparation of ends
   7.6 Dimensions, mass and tolerances
8 Inspection
   8.1 Type of inspection
   8.2 Inspection documents
   8.3 Summary of inspection and testing
9 Sampling
   9.1 Frequency of tests
   9.2 Preparation of samples and test pieces
10 Test Methods
   10.1 Tensile test
   10.2 Flattening test
   10.3 Visual examination
   10.4 Dimensional inspection
11 Retests, sorting and reprocessing
12 Marking
13 Coating
Annex A (informative) Values for design of structures
Bibliography