Original oil and gas trade magazine vintage ad for ARMCO STEEL CORPORATION of Pittsburgh, PA. Fabricated, forged steel fluid ends to permit higher slush pump working pressures. National Supply has developed a cylinder to meet the severe drilling conditions that result from the use of jet bits and deeper drilling practices. Steel forgings are used because of their excellent metallurgical properties which provide a clean steel with maximum density. Four new pumps have been added to the popular K-series of power slush pumps. New polyurethane discs in Type G-2 valves give up to 10 times more service life. Extremely tough and strong, with excellent resistance to loil and chemicals used in drilling muds. This unique 1962 technical oilfield petroleum equipment advertisement would display beautifully matted and framed. Four-page gatefold ad.