API Spec 11B Errata 2
API Spec 11B Errata 2
Errata 2 to Specification for Sucker Rods, Polished Rods and Liners, Couplings, Sinker Bars, Polished Rod Clamps, Stuffing Boxes, and Pumping Tees
Amendment by American Petroleum Institute, 02/01/2011
