Document 9pVq0gYw6KDzMV1JOxXz5XdV

Sunk in the This 6:" riveted-stecl pressure conduit if laid in dump, corrosion-producing earth. It needs the time-proven protection of pure red-lead. Be sure where CORROSION works unseen Three coats ofpure red-lead most practicable method ofprotecting buried steel OTEEL buried in the ground is threat^ ened by unusual danger from corrosion. The surrounding earth is nearly always damp. Ground water is a constant menace to the metal. Under most conditions, the most feasible method of protection is a three-coat cover ing of pure red-lead. Paint, made of red-lead adheres closely to steel. It is moisture-proof. It is not affected by the chemical substances ordi narily found in ground water. It offers durable, economical protection. Where the soil condition is strongly al kaline, of course no paint is suitable. In such a case, the oil vehicle of the paint will be turned to soap. Protecting buried tanks Tanks sunk in the ground are sometimes protected as follows: Three coats of redlead are applied. The tank is then buried in sand, which acts as a filter. In damp soil, a metal tank so treated will last for many years without further attention. In dry soil it will last even longer. Engineers make this choice Investigations indicate that engineers use pure red-lead extensively for protecting steel work. The 206 engineers who an swered a recent questionnaire were almost unanimous in their choice of this material. 179 (or SS% of them) said they use, specify, or recommend red-lead for metal protection. Dutch Boy red-lead was favored by many of these engineers. Dutch Boy redlead is pure, uniform in quality. You can get it in either paste, or liquid form. The liquid comes in the orange-red for next-tometal coats and in greens, browns, and black for finishing coats. The paste comes in the orange-red and can be shaded to dark colors. National Lead Company's special tech nical staff will be pleased to assist you with any painting problem. Address them in. care of our nearest branch. NATIONAL LEAD COMPANY New York. Ill Broadway r Boston. 800 Albany Street Buffalo, XIS Oak Street r Chicago. 900 West 18th Street Cincinnati, 6S9 Freeman Avenue * Cleveland. 820 West Superior Avenue t St. Louis, 722 Chestnut Street San Francisco. 485 California Street t Pittsburgh. Nations] Lead as Oil Co. of Penna., 316 Fourth Avenue r Phila delphia, John T. Lewis 66 Bros.. 437 Chestnut Street. DUTCH BOY RED-LEAD Engineering News-Record, March 17, 1927 0000-NL1-000017628