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API SPEC 5CT ERTA 2 Document Information:
Title
Specification for Casing and Tubing
American Petroleum Institute
Publication Date:
Apr 7, 2006
Scope:
This International Standard specifies the technical delivery
conditions for steel pipes (casing,
tubing, plain-end casing liners and pup joints), coupling stock and
accessories and establishes
requirements for three Product Specification Levels (PSL-1, PSL-2,
PSL-3). The requirements for
PSL-1 are the basis of this International Standard. The requirements
that define different levels
of standard technical requirements for PSL-2 and PSL-3, for all Grades
except H-40 and L-80 9Cr,
are contained in Annex H.
For pipes covered by this International Standard, the sizes, masses
and wall thicknesses as well as
grades and applicable end-finishes are listed in Tables C.1 to C.3 and
Tables E.1 to E.3.
By agreement between the purchaser and manufacturer, this
International Standard can also be
applied to other plain-end pipe sizes and wall thicknesses.
This International Standard is applicable to the following connections
in accordance with API Spec
5B:
- short round thread casing (STC);
- long round thread casing (LC);
- buttress thread casing (BC);
- extreme-line casing (XC);
- non-upset tubing (NU);
- external upset tubing (EU);
- integral joint tubing (IJ).
For such connections, this International Standard specifies the
technical delivery conditions for
couplings and thread protection. Supplementary requirements that may
optionally be agreed for
enhanced leak resistance connections are given in Annex A.11 (SR22).
This International Standard can also be applied to tubulars with
connections not covered by ISO/API
standards.
The four groups of products to which this International Standard is
applicable include the
following grades of pipe:
- Group 1: All casing and tubing in Grades H, J, K and N;
- Group 2: All casing and tubing in Grades C, L, M and T;
- Group 3: All casing and tubing in Grade P;
- Group 4: All casing in Grade Q.
Casing sizes larger than Label 1: 4-1/2 but smaller than Label 1:
10-3/4 may be specified by the
purchaser to be used in tubing service, see Tables C.1, C.24, C.30 and
C.31 or Tables E.1, E.24,
E.30 and E.31.
Supplementary requirements that may optionally be agreed between
purchaser and manufacturer for
non-destructive examination, coupling blanks, upset casing,
electric-welded casing, impact testing,
seal ring couplings and certificates are given in Annex A.
This International Standard is not applicable to threading
requirements.
NOTE 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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