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 Options
6.3 Example of an order
7 Manufacturing process
7.1 Steelmaking process
7.2 Deoxidation process
7.3 Tube manufacture and delivery conditions
8 Requirements
8.1 General
8.2 Chemical composition
8.3 Mechanical properties
8.4 Hardness requirements
8.5 Hardenability
8.6 Appearance and soundness
8.7 Straightness
8.8 End preparation
8.9 Dimensions, masses, tolerances and sectional
properties
9 Inspection
9.1 Types of inspection
9.2 Inspection documents
9.3 Summary of inspection and testing
10 Sampling
10.1 Frequency of tests
10.2 Preparation of samples and test pieces
11 Test methods
11.1 Tensile test
11.2 Impact test
11.3 Hardenability test
11.4 Hardness test
11.5 Leak tightness test
11.6 Non-destructive testing
11.7 Dimensional inspection
11.8 Visual examination
11.9 Material identification
11.10 Retests, sorting and reprocessing
12 Marking
13 Protection
Annex A (normative) Steels for case hardening
Annex B (informative) Recommended heat treatment
temperatures
Annex C (normative) Hardness requirements for heat
treated tubes
Annex D (normative) Hardenability - Limiting values for
C scale Rockwell
Annex E (normative) Formulae for calculation of nominal
section properties
Bibliography