NBN EN ISO 11961 : 2009 COR 2009

1 Scope
2 Normative references
3 Definitions
4 Information to be supplied by the purchaser
5 Process of manufacture
   5.1 General
   5.2 Heat treatment
   5.3 Traceability
6 Material requirements
   6.1 Chemical requirements
   6.2 Mechanical properties requirements
7 Dimensions, masses, tolerances and pipe ends
   7.1 Dimensions and masses
   7.2 Diameter
   7.3 Wall thickness
   7.4 Mass
   7.5 Length
   7.6 Straightness
   7.7 Drift requirements
   7.8 Tolerances on dimensions and masses
   7.9 Pipe ends
8 Inspection and testing
   8.1 General
   8.2 Chemical composition
   8.3 Mechanical properties
   8.4 Dimensional testing and mass determination
   8.5 Visual inspection
   8.6 Non-destructive inspection
   8.7 Test methods and results
   8.8 Invalidation of tests
   8.9 Retests
9 Marking
   9.1 General
   9.2 Pipe markings
   9.3 Die-stamped markings
   9.4 Paint-stencilled markings
   9.5 Pipe processor markings
10 Coatings
11 Documents
   11.1 Certification
   11.2 Retention of records
Annexes
A Pipe Properties
B Supplementary requirements
C Purchaser inspection

Defines technical delivery conditions for steel drill pipes to be used in drilling and producing operations.