Kehtetu alates 03.05.2021
This International Standard 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 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, L-80 9Cr and C110, 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 and C.2 and Tables E.1 and E.2.
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 (SC);
- long round thread casing (LC);
- buttress thread casing (BC);
- non-upset tubing (NU);
- external upset tubing (EU);
- integral tubing (IJ).
For such connections, this International Standard 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 in A.11 SR22.
This International Standard can also be applied to tubulars with connections not covered by ISO/API standards.