scope:

Std. 9-A covers general specifications, including physical properties, for three grades of wire rope with sizes and types of constructions deemed necessary in oil field work, these covering cable and rotary drilling and casing and bailing lines, sand lines, tubing lines, torpedo lines, well measuring wire, and galvanized wire guy strands. In addition this specification gives recommended field practice in the care and use of wire rope including revving diagrams, also a section on proper design of equipment used with wire rope, including details on sheave grooves, and gages therefore; and a section on evaluation of rotary drilling lines whereby the determination of ton-miles work is facilitated by the use of a chart.

The 11th Edition of Std. 9-A recognizes a reduction in grades and sizes of wire rope as given in a "Simplified Practice" prepared and published by the National Bureau of Standards, this covering the grades of wire rope usually known as "Mild Plow Steel" (replacing old API Grades "l" and "N"), "Plow Steel" (replacing old API Grade "J"), and "Improved Plow Steel". The specification also includes stipulations on manufacture and tolerances for wire, and on tests.

The API monogram is permitted by licensed manufacturers under Std. 9-A by specified marking on the face of the reel.