ISO 11960:2011
Petroleum and natural gas industries — Steel pipes for use as casing or tubing for wells
ISO 11960:2010 specifies the technical delivery conditions for steel pipes (casing, tubing and pup joints), coupling stock, coupling material and accessory material and establishes requirements for three product specification levels (PSL-1, PSL-2, PSL-3). The requirements for PSL-1 are the basis of ISO 11960:2010. The requirements that define different levels of standard technical requirements for PSL-2 and PSL-3, for all grades except H-40, L-80 9Cr and C110, are contained in Annex H.
For pipes covered by ISO 11960:2010, the sizes, masses and wall thicknesses as well as grades and applicable end-finishes are listed.
By agreement between the purchaser and manufacturer, ISO 11960:2010 can also be applied to other plain-end pipe sizes and wall thicknesses.
ISO 11960:2010 is applicable to the following connections in accordance with API Spec 5B: short round thread casing (SC), long round thread casing (LC), buttress thread casing (BC), non-upset tubing (NU), external upset tubing (EU) and integral tubing connections (IJ).
For such connections, ISO 11960:2010 specifies the technical delivery conditions for couplings and thread protection. Supplementary requirements that can optionally be agreed for enhanced leak resistance connections (LC) are given.
ISO 11960:2010 can also be applied to tubulars with connections not covered by ISO/API standards.
The four groups of products to which ISO 11960:2010 is applicable include the following grades of pipe: group 1, including all casing and tubing in grades H, J, K, N and R; group 2, including all casing and tubing in grades C, L, M and T; group 3, including all casing and tubing in grade P; and group 4, including all casing in grade Q.
Casing sizes larger than label 1: 4-1/2 but smaller than label 1: 10-3/4 can be specified by the purchaser for use in tubing service.
Supplementary requirements that can optionally be agreed between purchaser and manufacturer for non-destructive examination, fully machined coupling blanks, upset casing, electric-welded casing, tubing and pup joints, impact testing, seal ring couplings, test certificates, tensile testing and sulfide stress cracking testing are given.
ISO 11960:2010 is not applicable to threading requirements. Dimensional requirements on threads and thread gauges, stipulations on gauging practice, gauge specifications, as well as instruments and methods for inspection of threads are given in API Spec 5B.
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Scope
Conformance
Dual referencing of normative references
Units of measurement
Normative references
Terms, definitions, symbols and abbreviated terms
Terms and definitions
Symbols and abbreviated terms
Information to be supplied by the purchaser
Grades C90, T95 and C110
Casing
Tubing
Coupling stock, coupling material and accessory material
Process of manufacture
General
Heat treatment
General
Group 1 (except H40)
Group 2
Straightening
Groups 1 (except Grade R95) and 3
Grade R95
Grades M65 and L80
Grades C90 and T95
Grade C110
Grade Q125
Traceability
General
Serialization of Grades C90, T95, C110 and Q125
Processes requiring validation
Material requirements
Chemical composition
Tensile properties
General
Elongation — All groups
Yield strength
Statistical tensile testing – Grades C90, T95 and C110
Charpy V-notch test — General requirements
Evaluation of test results
Critical thickness
Specimen size and orientation
Hierarchy of test specimens
Alternative size impact test specimens
Sub-size test specimens
Test temperature
Statistical impact testing
Reference information
Charpy V-notch — Absorbed energy requirements for coupling s
General
Grade H40
Grades J55 and K55 for API threads
Grade M65 for API threads
Grades N80 Type 1, N80Q and R95, Groups 2 (except Grades M65
Special end-finish
Charpy V-notch — Absorbed energy requirements for pipe
Grades H40, J55, K55 and N80 Type 1
Grade M65
Grades N80Q, R95, L80, C90, T95 and P110
Grades C110 and Q125
Test specimen
Testing conditions
Charpy V-notch — Absorbed energy requirements for accessory
Accessory material — General
Accessory material for accessories with internal API threads
Accessory material for accessories with internal special end
Accessory material for accessories with external threads
Accessory material for accessories with either integral tubi
Critical thickness for accessory material and special end-fi
Maximum hardness
Group 2 — All product
Grade Q125 — All products
Hardness variation — Grades C90, T95, C110 and Q125
Process control — Grades C90, T95, C110 and Q125
Hardenability — Minimum percentage martensite for quenched a
Grades C90 and T95
Grade C110
All grades except Grades C90, T95 and C110
Grain size — Grades C90, T95 and C110
Surface condition — Grades L80 9Cr and L80 13Cr
Flattening — Electric-welded pipe
Sulfide stress cracking test — Grades C90, T95 and C110
General guidance
Test and re-test requirements
Test sample selection and location
Test solution for Grades C90, T95 and C110
Minimum SSC requirements
Invalidation of tests
Additional testing provisions for ANSI-NACE TM0177-2005 Meth
Dimensions, masses, tolerances, pipe ends and defects
Labels and sizes
Dimensions and masses
Diameter
Measurement and design
Requirements
Wall thickness
Mass
Length
Casing jointers
Height and trim of electric-weld flash
Trimming electric-weld flash
Groups 1 and 2
Groups 3 and 4
Disposition
Straightness
Pipe
Coupling stock, coupling material and accessory material
Drift requirements
Tolerances on dimensions and masses
Outside diameter
Wall thickness
Mass
Inside diameter
Upset dimensions
Extended length upsets
Product ends
Plain-end pipe
Product with API threads
Rounded nose
Threading
Workmanship of ends
Special end-finish
Defects
Pipe and accessory made from pipe
Accessory material not made from pipe, coupling stock and co
Process control plan
Coupling make-up and thread protection
Groups 1, 2 and 3
Group 4
Couplings
General requirements
Alternative grades or heat treatments
Mechanical properties
Dimensions and tolerances
Groups 1, 2 and 3
Group 4
Regular couplings
Special-clearance couplings — Groups 1, 2 and 3
Combination couplings
Reducing couplings — Groups 1, 2 and 3
Seal-ring couplings
Special-bevel tubing regular couplings — Groups 1, 2 and 3
Threading
General requirements
Couplings
Surface inspection
Measurement of imperfections
Repair and removal of imperfections and defects
Thread surface treatment — Grade Q125
Couplings and coupling blank protection — Grades C90, T95, C
Inspection and testing
Test equipment
Lot definition for testing of mechanical properties
Groups 1 , 2 (Grades M65 and L80 Type 1 only) and 3 — Coupli
Grades L80 9Cr, L80 13Cr, C90, T95, C110 and Q125 — Coupling
Coupling blanks, pup joints or accessory material heat-treat
Testing of chemical composition
Heat analyses
Product analyses
Test method
Re-check of product analyses — All groups
Tensile tests
Stress-relief temperature – All grades except C110
Heat-control tensile tests — Groups 1, 2 and 3
Frequency of testing and location of test specimen — Casing
Frequency of testing and test specimen location — Coupling s
Test specimens — General
Test specimens — Additional requirements for coupling blanks
Test method
Invalidation of tests
Re-tests — All products \(except couplin�
Re-tests — Coupling blanks, coupling stock, coupling materia
Flattening test
General requirement for testing
Frequency of testing
Test specimens
Test method for Groups 1 and 2
Test method for Grade P110 pipe and Grade Q125 casing
Invalidation of tests
Re-tests
Hardness test
PSL requirements
Frequency of testing — General
Frequency of testing — Heat-control tests — Grades M65 and L
Frequency of testing — Grades M65 and L80
Frequency of testing and test specimen location — Non-upset
Frequency of testing and test specimen location — Upset pipe
Frequency of testing and test specimen location — Coupling b
Frequency of testing — Grade Q125
Test specimens
Test method
Invalidation of tests
Periodic checks of hardness-testing machines
Verification of hardness-testing machines and indenters
Re-tests — Grades M65 and L80
Re-tests — Grades C90, T95 and C110 products except for coup
Re-tests — Grades C90, T95 and C110 coupling blanks, pup joi
Re-tests — Grade Q125 — General
Re-tests — Grade Q125 — Casing, coupling stock and coupling
Re-tests — Grade Q125 — Coupling blanks, pup joints and acce
Rejected lots — Groups 2 and 4
Impact test
Sampling —Grades J55, K55 and N80 Type 1
Sampling — Grade M65
Sampling — Grades N80Q, R95, L80, C90, T95, C110 and P110
Sampling and test specimen location — Grade Q125
Test specimens
Test method
Invalidation of tests
Re-test of a length — All groups
Replacement of a reject length — All groups
Multiple length rejection — Grade Q125
Grain size determination — Grades C90, T95 and C110
Sampling
Test method
Hardenability — Grades C90, T95 and C110
Sulfide stress-cracking test — Grades C90, T95 and C110
Metallographic evaluation — EW Grades P110 and Q125
Hydrostatic tests
Hydrostatic test procedures
Hydrostatic test requirements
Test pressure calculation
Dimensional testing
General
Diameter measurement
Diameter re-tests
Wall thickness measurement
Drift test
Length measurement
Mass (weight) determination
Straightness evaluation
Internal upset inspection
Visual inspection
General
Pipe body, coupling stock and coupling material (excluding p
Pipe ends
Disposition
Non-destructive examination (NDE)
General
NDE personnel
Reference standards
NDE system capability records
Pipe body or coupling stock inspection — General
Full-body, full-length NDE of casing and tubing — Grades N80
Full-body, full-length NDE of casing and tubing — Grade P110
Full-body, full-length NDE of casing and tubing — Grade P110
Full-body, full-length NDE of casing and tubing — Grades C90
NDE of the weld seam of welded pipe
Coupling stock (except Grade C110) and pup joints
NDE of coupling stock and accessory material – Grade C110
Un-tested pipe ends, coupling stock ends and accessory mater
Pipe upsets
Pipe, coupling stock and accessory material requiring furthe
Evaluation of indications (prove-up)
Disposition of pipe containing defects
Disposition of coupling stock and accessory material contain
Marking
General
Stamp marking requirements
Methods
Size
Location
Group 1 (except R95) and Group 3
Grade R95 and Groups 2 and 4
Make-up triangle marking
Stencil marking requirements
Colour identification
Colour coding
Product 1,8 m (6 ft) and longer
Loose couplings
Special-clearance couplings
Pup joints shorter than 1,8 m (6 ft) in length
Grade colour-codes
Thread and end-finish marking — All groups
API thread marking
Plain-end and special end-finish markings
Pipe-threader marking requirements — All groups
Coating and protection
Coatings — All groups
Coatings for protection during transit
Coatings for long-term storage
Thread protectors
General
Grade L80 Types 9Cr and 13Cr
Driftable thread protectors
Documents
Electronic media — All groups
Certification — Groups 1, 2 (except Grade C110) and 3
Certification requirements — Grades C110 and Q125
Retention of records
Minimum facility requirements for various categories of manu
Pipe mill
Processor
Pipe threader
Coupling, pup-joint or accessory manufacturer
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Scope
Conformance
Dual referencing of normative references
Units of measurement
Normative references
Terms, definitions, symbols and abbreviated terms
Terms and definitions
Symbols and abbreviated terms
Information to be supplied by the purchaser
Grades C90, T95 and C110
Casing
Tubing
Coupling stock, coupling material and accessory material
Process of manufacture
General
Heat treatment
General
Group 1 (except H40)
Group 2
Straightening
Groups 1 (except Grade R95) and 3
Grade R95
Grades M65 and L80
Grades C90 and T95
Grade C110
Grade Q125
Traceability
General
Serialization of Grades C90, T95, C110 and Q125
Processes requiring validation
Material requirements
Chemical composition
Tensile properties
General
Elongation — All groups
Yield strength
Statistical tensile testing – Grades C90, T95 and C110
Charpy V-notch test — General requirements
Evaluation of test results
Critical thickness
Specimen size and orientation
Hierarchy of test specimens
Alternative size impact test specimens
Sub-size test specimens
Test temperature
Statistical impact testing
Reference information
Charpy V-notch — Absorbed energy requirements for coupling s
General
Grade H40
Grades J55 and K55 for API threads
Grade M65 for API threads
Grades N80 Type 1, N80Q and R95, Groups 2 (except Grades M65
Special end-finish
Charpy V-notch — Absorbed energy requirements for pipe
Grades H40, J55, K55 and N80 Type 1
Grade M65
Grades N80Q, R95, L80, C90, T95 and P110
Grades C110 and Q125
Test specimen
Testing conditions
Charpy V-notch — Absorbed energy requirements for accessory
Accessory material — General
Accessory material for accessories with internal API threads
Accessory material for accessories with internal special end
Accessory material for accessories with external threads
Accessory material for accessories with either integral tubi
Critical thickness for accessory material and special end-fi
Maximum hardness
Group 2 — All product
Grade Q125 — All products
Hardness variation — Grades C90, T95, C110 and Q125
Process control — Grades C90, T95, C110 and Q125
Hardenability — Minimum percentage martensite for quenched a
Grades C90 and T95
Grade C110
All grades except Grades C90, T95 and C110
Grain size — Grades C90, T95 and C110
Surface condition — Grades L80 9Cr and L80 13Cr
Flattening — Electric-welded pipe
Sulfide stress cracking test — Grades C90, T95 and C110
General guidance
Test and re-test requirements
Test sample selection and location
Test solution for Grades C90, T95 and C110
Minimum SSC requirements
Invalidation of tests
Additional testing provisions for ANSI-NACE TM0177-2005 Meth
Dimensions, masses, tolerances, pipe ends and defects
Labels and sizes
Dimensions and masses
Diameter
Measurement and design
Requirements
Wall thickness
Mass
Length
Casing jointers
Height and trim of electric-weld flash
Trimming electric-weld flash
Groups 1 and 2
Groups 3 and 4
Disposition
Straightness
Pipe
Coupling stock, coupling material and accessory material
Drift requirements
Tolerances on dimensions and masses
Outside diameter
Wall thickness
Mass
Inside diameter
Upset dimensions
Extended length upsets
Product ends
Plain-end pipe
Product with API threads
Rounded nose
Threading
Workmanship of ends
Special end-finish
Defects
Pipe and accessory made from pipe
Accessory material not made from pipe, coupling stock and co
Process control plan
Coupling make-up and thread protection
Groups 1, 2 and 3
Group 4
Couplings
General requirements
Alternative grades or heat treatments
Mechanical properties
Dimensions and tolerances
Groups 1, 2 and 3
Group 4
Regular couplings
Special-clearance couplings — Groups 1, 2 and 3
Combination couplings
Reducing couplings — Groups 1, 2 and 3
Seal-ring couplings
Special-bevel tubing regular couplings — Groups 1, 2 and 3
Threading
General requirements
Couplings
Surface inspection
Measurement of imperfections
Repair and removal of imperfections and defects
Thread surface treatment — Grade Q125
Couplings and coupling blank protection — Grades C90, T95, C
Inspection and testing
Test equipment
Lot definition for testing of mechanical properties
Groups 1 , 2 (Grades M65 and L80 Type 1 only) and 3 — Coupli
Grades L80 9Cr, L80 13Cr, C90, T95, C110 and Q125 — Coupling
Coupling blanks, pup joints or accessory material heat-treat
Testing of chemical composition
Heat analyses
Product analyses
Test method
Re-check of product analyses — All groups
Tensile tests
Stress-relief temperature – All grades except C110
Heat-control tensile tests — Groups 1, 2 and 3
Frequency of testing and location of test specimen — Casing
Frequency of testing and test specimen location — Coupling s
Test specimens — General
Test specimens — Additional requirements for coupling blanks
Test method
Invalidation of tests
Re-tests — All products \(except couplin�
Re-tests — Coupling blanks, coupling stock, coupling materia
Flattening test
General requirement for testing
Frequency of testing
Test specimens
Test method for Groups 1 and 2
Test method for Grade P110 pipe and Grade Q125 casing
Invalidation of tests
Re-tests
Hardness test
PSL requirements
Frequency of testing — General
Frequency of testing — Heat-control tests — Grades M65 and L
Frequency of testing — Grades M65 and L80
Frequency of testing and test specimen location — Non-upset
Frequency of testing and test specimen location — Upset pipe
Frequency of testing and test specimen location — Coupling b
Frequency of testing — Grade Q125
Test specimens
Test method
Invalidation of tests
Periodic checks of hardness-testing machines
Verification of hardness-testing machines and indenters
Re-tests — Grades M65 and L80
Re-tests — Grades C90, T95 and C110 products except for coup
Re-tests — Grades C90, T95 and C110 coupling blanks, pup joi
Re-tests — Grade Q125 — General
Re-tests — Grade Q125 — Casing, coupling stock and coupling
Re-tests — Grade Q125 — Coupling blanks, pup joints and acce
Rejected lots — Groups 2 and 4
Impact test
Sampling —Grades J55, K55 and N80 Type 1
Sampling — Grade M65
Sampling — Grades N80Q, R95, L80, C90, T95, C110 and P110
Sampling and test specimen location — Grade Q125
Test specimens
Test method
Invalidation of tests
Re-test of a length — All groups
Replacement of a reject length — All groups
Multiple length rejection — Grade Q125
Grain size determination — Grades C90, T95 and C110
Sampling
Test method
Hardenability — Grades C90, T95 and C110
Sulfide stress-cracking test — Grades C90, T95 and C110
Metallographic evaluation — EW Grades P110 and Q125
Hydrostatic tests
Hydrostatic test procedures
Hydrostatic test requirements
Test pressure calculation
Dimensional testing
General
Diameter measurement
Diameter re-tests
Wall thickness measurement
Drift test
Length measurement
Mass (weight) determination
Straightness evaluation
Internal upset inspection
Visual inspection
General
Pipe body, coupling stock and coupling material (excluding p
Pipe ends
Disposition
Non-destructive examination (NDE)
General
NDE personnel
Reference standards
NDE system capability records
Pipe body or coupling stock inspection — General
Full-body, full-length NDE of casing and tubing — Grades N80
Full-body, full-length NDE of casing and tubing — Grade P110
Full-body, full-length NDE of casing and tubing — Grade P110
Full-body, full-length NDE of casing and tubing — Grades C90
NDE of the weld seam of welded pipe
Coupling stock (except Grade C110) and pup joints
NDE of coupling stock and accessory material – Grade C110
Un-tested pipe ends, coupling stock ends and accessory mater
Pipe upsets
Pipe, coupling stock and accessory material requiring furthe
Evaluation of indications (prove-up)
Disposition of pipe containing defects
Disposition of coupling stock and accessory material contain
Marking
General
Stamp marking requirements
Methods
Size
Location
Group 1 (except R95) and Group 3
Grade R95 and Groups 2 and 4
Make-up triangle marking
Stencil marking requirements
Colour identification
Colour coding
Product 1,8 m (6 ft) and longer
Loose couplings
Special-clearance couplings
Pup joints shorter than 1,8 m (6 ft) in length
Grade colour-codes
Thread and end-finish marking — All groups
API thread marking
Plain-end and special end-finish markings
Pipe-threader marking requirements — All groups
Coating and protection
Coatings — All groups
Coatings for protection during transit
Coatings for long-term storage
Thread protectors
General
Grade L80 Types 9Cr and 13Cr
Driftable thread protectors
Documents
Electronic media — All groups
Certification — Groups 1, 2 (except Grade C110) and 3
Certification requirements — Grades C110 and Q125
Retention of records
Minimum facility requirements for various categories of manu
Pipe mill
Processor
Pipe threader
Coupling, pup-joint or accessory manufacturer