Abresist basalt-lined piping is tougher than grit, sludge, limestone, incinerator ash or bio-solids fertilizer conveyed in wastewater plants, and lasts five times longer than ?-in. cast iron. Pipes, elbows and fittings are custom engineered. It is excellent for slurries or pneumatic systems, pressure or vacuum conditions. The image shows 78-in.-diameter pipe for handling combined sewage at a major Northeast city pumping station; the lining protects against abrasive failure.