Document rBDM7p4Nn2GRd9469M9DQ5Xj7

Air System Equipment Sheet Metal and Tubular Products Bethlehem Steel Company General Offices: Bethlehem, Pa. Bethlehem Steel Company. General Offices: Bethlehem. Pa. District Offices: Akron, Albany, Atlanta, Baltimore, Boston, Buffalo, Chicago, Cincinnati, Cleveland, Columbus, Dallas Denver, Detroit, Honolulu, Houston, Indianapolis. Johnstown. Pa.. Kansas City, Mo., Los Anceles, Louisville, Milwaukee, Nashville, New Haven, New Orleans, New York. Philadelphia, Pittsburgh, Portland, Orb., St. Louis, St. Paul, Salt Lake City, San Antonio, San Francisco, Savannah. Seattle, Springfield, Mass., Syracuse, Toledo. Tulsa. Washington. Wilkes-Barre, York. Export Distributors; Bethlehem Steel Export Corporation, New York. COPPER-BEARING BETH-CU-LOY FOR RUST RESISTANCE The charts at the right show conclusively the superior rust resistance- of copper bearing steel. Sheets of the same com position as Beth-Cu-Loy, Bethlehem's copper-bearing steel, outlasted ordinary iron and steel by a wide margin when exposed to atmospheric corrosion. Beth-Cu-Loy, available in the form of sheets, pipe and plates, offers 2 to 3 times longer life as indicated by these three corrosion tests--and Beth-Cu-Loy costs only 3 to 5 per cent more than ordinary steel, much less than open-hearth or copper bearing iron. Heating, ventilating and air conditioning engineers, architects and contractors are finding it pays to specify Beth-Cu-Loy wherever moisture or corrosion is a factor. Beth-Cu-Loy sheets are easily workable, durable and low in cost. A.S.T.M. Test of 22-gage black sheets Years to average first faiture of 4 materials fit PITTSBURGH Copper-bearing Iron Copper-bearing Steel _1_ Sheets exposed April 21, 1926; tests still under wav (see Proceedings of A.S.T.M.--Committee A-5. Vol. 38). No failures in copper-bearing steel sheets at last report. BETHLEHEM MAKES: Sheet Steel -- all grades, hot-rolled (black), cold-rolled, and galvanized-- available in Beth-Cu-Loy. Steel Pipe^-all'sizes and weights, buttwelded and lap-welded. Ammonoduct--A new kind of pipe that has an outstanding advantage in its unusual ductility. It can be bent cold, without need for annealing, without danger of fracturing. Recommended for ammonia piping and for heater coils, water legs in furnaces and similar uses where pipe must be bent. Boiler Tubes--Charcoal iron and steel. 24 6 8 10 12 Sheets exposed April 19. 1917; test discontinued April 16. 1928 (see Proceedings of A.S-T.M.-- Committee A-5. Vol. 28). Only 10 of 61 copper-bearing steel sheets had failed when test was discontinued. f 1 I 111 M 1 I | I l I l | l I l I | 1 III /It ANNAPOLIS Copper-beoring Iron Copper-bearing Steel Plates--all sizes; flanged and dished heads. Available in- Beth-Cu-Loy. Literature and further information on any of these products can be secured from the nearest district office or from the general offices in Bethlehem, Pa. Sheets exposed October 17. 1916; tests still tinder wav (see Proceedings of A.S.T.M.--Committee A-5. Vol. 38). *Onlv 9 of 78 copper-bearing steel sheets had failed at last report. A booklet "Beth-Cu-Loy Sheets." gives the story of these tests. A copy is yours for the asking. 908 Air System Equipment Sheet Metal and Tubular Products Camegie-IUinois Steel Corporation General Offices: Pittsburgh and Chicago District Offices Birmingham BCTrrpN Cf^ago Cincinnati Cleveland Denver Detroit Houston Indianapolis Milwaukee New York Philadelphia Pittsburgh St. Louts St. Paul Washington COLUMBIA STEEL COMPANY, San Francisco, Pacific Coast Distributors UNITED STATES STEEL PRODUCTS COMPANY, New York, Export Distributors rust-resisting u s s copper steel galvanized SHEETS Copper steel is an alloy made by adding copper to molten steel, thereby increasing the resistance of steel to rust. Metallurgists, railroad construction engineers and independent research laboratories have tested U*S*S Copper Steel and discovered that it lasts two fo three times as tong as plain steel when subjected to atmospheric corrosion. When you specify U*S`S Copper Steel Sheets for air-conditioning ducts or equipment, you get the advantage of 100 per cent to 200 per cent longer life for about 5 per cent more cost. Duct work is so costly to replace that Copper Steel should be considered for any worthwhile job. U*S*S Copper Steel Sheets are saving thousands of dollars yearly in the ceaseless fight against rust. They give maximum protection per dollar of cost and are being used in ever-increasing volume by heating, ventilating and air-conditioning engineers, architects and contractors. Gauges of Steel Sheets Used for Duct Construction HEATING AND VENTILATING Round Ducts Rectangular Ducts Dim, Inches 6 to 19 20 to 29 30 to 39 40 to 49 SO and above Gauge 26 24 22 . 20 18 Width, Inches 4 to 18 19 to 30 31 to 60 61 tolI8 118 and above Gauge 26 24 22 20 18 Planmg'Mill and Other Exhaust Systems . Dianu. Inches Up to 8 9 to 14 IS to 20 21 to 30 Gauge 24 22 20 18 In the above table rectangular ducts are to have cross breaks for .the gauges shown, otherwise two gauges heavier should be used. One inch standing seams should be used on widths up to 48 in., in. seams on widths over 48 in., and.for widths over 60 in., the seams should in addition be provided with reinforcing bars or angles. (This material is reprinted by permission from ``Fan Engineering," Buffalo Forge Co.). U*S*S Black and Galvanized Sheets Two principal types of black sheets are used by air-conditioning engineers. They are U-S-S Hot Rolled and U-S-S Hot Rolled Annealed. These steel sheets may be had in a number of different finishes, suitable for all sorts of forming operations and for painting. Remember that every kind of U-S-S Black Sheet is available in Copper-Steel Black Sheets for blowers, refrigerator cabinets, dust collectors, tube collectors, fans, ducts and a thousand other specialty products. Five types of galvanized sheets made by U-S-S Subsidiaries are used extensively in heating and ventilating work. The best types for your particular products or installa tions may be ascertained by consulting U-S-S engineers. Write the nearest branch office. 909