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An air-powered saw that features a self-centering track system, pre-sized for pipe from 6-inch to 60-inch diameter, to produce perfectly square cuts with no HAZ (heat affect zone) is available from ESCO Tool of Holliston, MA. The ESCO APS-438 Universal Air-Powered Saw features a fiberglass reinforced blade for cutting super duplex stainless steel pipe, concrete lined pipe, ash pipe, and other heavy-wall hard alloy pipe up to 4 3/8-inch thick.