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portable drilling rigs

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Journal Articles
Alloy Digest (1976) 25 (12): SA-213.
Published: 01 December 1976
... such as crane booms and portable drilling rigs. It is supplied as tubing and shapes; for details see Forms Available. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating...
Journal Articles
Alloy Digest (1985) 34 (7): SA-410.
Published: 01 July 1985
... in the water-quenched-and-tempered condition. It is suited for mechanical and construc- tional applications. Some of the most common uses include such large welded structures as crane booms, drag-lines and portable drilling rigs. This grade possesses greater notch toughness properties than low- alloy or carbon...
Journal Articles
Alloy Digest (1976) 25 (11): SA-327.
Published: 01 November 1976
..., draglines and portable drilling rigs. Manufacturer: Babcock and Wilcox Tubular Products Division Beaver Falls, Pennsylvania 15010. Stroloy 2A steel can be hot worked readily by heating to 2100-23000F before forging or rolling. Such thermal handling would, however, require quenching and tempering following...