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Sandblasting Machine for Removing Scale from Pipes


A sandblasting machine specialized for removing scale from pipes is a critical tool in maintaining the efficiency and longevity of industrial pipelines, which often accumulate mineral deposits, rust, and oxide layers (scale) that restrict flow and promote corrosion. These machines are engineered to tackle scale on both internal and external pipe surfaces, with designs tailored to pipe diameters ranging from 2 inches to 48 inches and lengths up to 40 feet. The system typically features a portable or fixed blasting unit with flexible lances for internal cleaning and rotating nozzles for external surfaces, propelling abrasives like garnet, aluminum oxide, or steel shot at pressures between 80150 PSI.  

Scale removal requires a balance of power and precision: the machine must dislodge tenacious deposits without thinning pipe walls, especially in industries like oil & gas, water treatment, and power generation where pipeline integrity is critical. Advanced models include pressure sensors that adjust abrasive velocity based on scale thickness, detected via ultrasonic or laser measurement. For internal cleaning, articulated lances navigate bends and elbows, while external systems use track-mounted carriages to traverse straight sections. A key feature is the dust collection system, which captures scale particles and abrasive dust to prevent environmental contamination and improve visibility. In refineries, these machines restore heat exchanger tubes to optimal thermal efficiency; in municipal water systems, they remove limescale from distribution pipes; in chemical plants, they prepare pipes for non-stick coatings. By combining targeted abrasion with adaptive controls, sandblasting machines for scale removal ensure pipelines operate at peak performance, reducing energy waste and extending service life.