Specification for Threading, Gauging, and Thread Inspection of
Casing, Tubing, and Line Pipe Threads API SPEC 5B is used in the oil field equipment. Covers dimensions and marking requirements for API Master thread gauges. Additional product threads and thread gauges as well as instruments and methods for the inspection of threads for line pipe, round thread casing, buttress casing, and extreme-line casing connections are included. It is applicable when so stipulated in the API standard governing the product.

The inspection procedures for measurements of taper, lead, height, and angle of
thread are applicable to threads having 111/2 or less turns per in. (111/2 or less turns per 25.4 mm). All thread dimensions shown without tolerances are related to the basis for connection design and are not subject to measurement to determine acceptance or rejection of product.

The IAC XPL Masterscanner covers threading, gauging, gauging practice, and inspection of threads for casing, tubing, and line pipe made under Specs 5CT, 5DP, and 5L. Also covers gauge specifications and certification for casing, tubing, and line pipe gauges.

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XPL Series

Series XPL from thread sizes for Watchmakers until large size diameters 400, 500 or 600 mm