Covers seamless and welded casing and tubing, couplings, pup joints, and connectors in all grades in U.S. customary units. Process of manufacture; chemical and mechanical property requirements; methods of testing; and dimensions are included. Includes the requirements for casing and tubing previously detailed in the last editions of discontinued Specifications 5A, 5AC, 5AQ, and 5AX.
API 5CT:1998 History
API Spec 5CT:2018
$145.00 $290.00
API Spec 5CT:2011
$132.00 $265.00
API Spec 5CT:2005
$132.00 $265.00
API Spec 5CT:2002
$107.00 $214.00
API 5CT:1998
$72.00 $144.00
More Standards PDF
API Bull D16 Fifth Edition
$144.00 $288.00
API Spec 17D (R2018)
$96.00 $192.00
API Std 685:2011
$115.00 $230.00
API Spec 19G3 (R2022)
$81.00 $162.00










