Drill pipe aluminum

McGhee, E., What you should know about aluminum drill pipe, Oil and Gas Journal, March 4-April 29, 1963. 

Decanting losses were much higher than anticipated. In an attempt to minimize losses, the chemical composition of the precipitation batches was varied to increase the oxalate/aluminum ratio. These variables had little effect on product losses because the solubility losses were very low (<15% of the actual loss). Apparently, Am-Cm oxalate solids are being suspended prior to and during decanting (perhaps due to the decay heat of Cm) and a portion of the suspended precipitate was decanted. A new decant jet, which had a plate welded across the bottom and holes drilled around the pipe above the plate to provide horizontal rather than vertical suction, was fabricated and installed after the fifth batch. Losses, however, remain unchanged. 

Alloy steel pipe composition has various elements, with total concentration between 1.0% and 50% by weight, which enhances the mechanical properties and corrosion resistance. These steels can be grouped under low-alloy steels. Along with economic growth, the demand of alloy steel pipes and tubes for industrial use has increased enormously. The most common alloying elements are nickel, chromium, silicon, vanadium, and molybdeniun. Special pipe steels also contain very small amounts of aluminum, cobalt, tungsten, titanium, and zirconium. Alloy steel has different properties on the basis of its composition. Alloy steel tubes cater to domestic and industrial requirements, such as gas drilling, offshore projects, refineries, and petrochemical plants. 

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