NEN EN 10305-1 : 2016

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Classification and designation
   5.1 Classification
   5.2 Designation
6 Information to be supplied by the purchaser
   6.1 Mandatory information
   6.2 Option
   6.3 Example of an order
7 Manufacturing process
   7.1 Steelmaking process
   7.2 Tube manufacture and delivery conditions
8 Requirements
   8.1 General
   8.2 Chemical composition
   8.3 Mechanical properties
   8.4 Appearance and internal soundness
   8.5 Dimensions and tolerances
9 Inspection
   9.1 Types of inspection
   9.2 Inspection documents
   9.3 Summary of inspection and testing
10 Sampling
   10.1 Test unit
   10.2 Preparation of samples and test pieces
11 Test methods
   11.1 Tensile test
   11.2 Flattening test
   11.3 Drift expanding test
   11.4 Dimensional inspection
   11.5 Roughness measurement
   11.6 Visual examination
   11.7 Non-destructive testing
   11.8 Retests, sorting and reprocessing
12 Marking
13 Protection and packaging
Annex A (normative) Requirements for additional steel grades
Annex B (informative) List of corresponding former symbols
        for delivery conditions and national steel designations
Bibliography

Defines the technical delivery conditions for seamless cold drawn steel tubes of circular cross section for precision applications with specified outside diameter D <= 380 mm.