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STEELMAKING PLANT - HEAT TREATMENT<br />

U.S. STEEL DUQUESNE WORKS<br />

HAER NO. PA-115<br />

(Page 182)<br />

Historic Name: U.S.S. Corporation, Duquesne Works, Heat Treatment<br />

Plant<br />

Present Name: U.S.X. Corporation, Duquesne Works, Heat Treatment<br />

Plant<br />

Location: Lower Works<br />

Construction: 1943, 1962<br />

Documentation: Photographs of the Heat Treatment Plant are<br />

located in HAER No. PA-115-H.<br />

DESCRIPTION<br />

I. Heat Treatment Plant Building: Located parallel to and just<br />

west of the 22" Bar Mill Building, the Heat Treatment Building is<br />

634' long x 250* wide x 42' high. The riveted steel-framed,<br />

corrugated metal building was built upon a concrete foundation by<br />

the American Bridge Company. Its gabled roof and monitor are<br />

supported by riveted Fink trusses. The building is laid out in<br />

two directions. At the northern end of the building is a 90'<br />

wide transfer bay, extending in an east-west direction across the<br />

entire 250* width of the building. It houses a 30' high craneway<br />

which carries two 25-ton E.O.T. cranes. The cranes were used to<br />

transfer bars to one of nine heat treating furnaces which are<br />

laid out parallel to each other from east to west in the two<br />

production bays located just south of and adjacent to the<br />

transfer bay. Each production bay is 125 ! wide x 544' long and<br />

is serviced by two 25-ton E.O.T. cranes. The furnaces themselves<br />

each run in north-south direction.<br />

A. Car Bottom Furnace No. 1: Manufactured by the Gas<br />

Machinery Company of America (Cleveland,Ohio), this gas-fired<br />

batch furnace is located approximately 20* off of the eastern<br />

inside wall of the building, just south of the transfer bay.<br />

Approximately 30 ? long x 10' wide x 15' high, the furnace was<br />

used to anneal bars up to 25' long.<br />

Installation date: 1943.<br />

B. car Bottom Furnace No. 6: Also manufactured by the Gas<br />

Machinery Company of America, Car Bottom Furnace No. 6 is located<br />

about 20' west of Car Bottom Furnace No. 1 and runs parallel to<br />

it. Used to anneal bars up to 36' in length, the batch furnace<br />

is approximately 50' long x 10' wide x 15' high.<br />

Installation date: 1962.<br />

C. Continuous Electric Heat Treating Line: Manufactured by<br />

the General Electric Corporation, the Continuous Electric Heat<br />

Treating Line is approximately 20' west of Car Bottom Furnace No.

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