American Petroleum Institute

SPECIFICATION FOR CASING, TUBING AND DRILL PIPE (COMBINED WITH X INTO SPEC 5D-88 AND COMBINED WITH C, 5AX, AND 5AQ INTO SPEC 5CT-88)
 N SPEC 5A

Annotation

Coverage. This specification covers casing, casing liners, tubing, casing and tubing pup joints (hereafter called pup joints), connectors, work tubing, and drill pipe in the sizes and wall thicknesses applicable to the various grades of pipe as shown in the standard lists (Table 1.1 through 1.5) and in the dimensional tables (Tables 6.1 through 6.10). It also includes casing and tubing couplings and thread protectors. All requirements given herein for casing and tubing shall apply to pup joints and connectors except as otherwise specified. Connectors are defined as a tubular section used for the purpose of 1) joining or changing from one size, weight, or type of threaded connection to the same or another size, weight, or type of threaded connection, or 2) other application.

Dimensional requirements on threads and thread gages, stipulations on gaging practice, gage specifications and certification, as well as instruments and methods for inspection of threads are given in API Std .5B and are applicable to products covered by this specification.

American Petroleum Institute (API) Specifications are published as aids to the procurement of standardized equipment and materials, as well as instructions to manufacturers of equipment or materials covered by an API Specification. These Specifications are not intended to obviate the need for sound engineering, nor to inhibit in any way anyone from purchasing or producing products to other specifications.

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