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API RP 5B1

Gauging and Inspection of Casing, Tubing, and Line Pipe Threads, Sixth Edition

STANDARD published on 1.10.2026

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electronic (protected pdf) (258.00 USD)
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Print design (262.50 USD)

The information about the standard:

Designation standards: API RP 5B1
Publication date standards: 1.10.2026
The number of pages: 138
Approximate weight : 445 g (0.98 lbs)
Country: American technical standard
Category: Technical standards API

Annotation of standard text API RP 5B1 :

This recommended practice provides the appropriate inspection techniques to be used for comparing measurements of threaded connection product geometry with dimensions and tolerances specified in API 5B. This document supplements and augments API Spec 5CT and API Spec 5L, which mandate physical and mechanical properties of casing, tubing, and line pipe. In all cases, the latest edition of API 5B takes precedence if a dispute arises between parties.