Metallurgy demands precise, reliable position feedback in extreme conditions. Explosion-proof magnetostrictive displacement sensors are built for furnaces, ladles, continuous casters, converters, and rolling mills where heat, dust, vibration, shock, and explosive gases or combustible dust are common. These sensors use a magnetostrictive waveguide and a movable magnet. The magnet creates a torsional strain pulse, and the electronics measure the time difference to calculate absolute position. With no sliding contacts, they offer high repeatability, long service life, and stable output. In hazardous metallurgy areas, flameproof or intrinsically safe housings prevent ignition. Typical features include 316L stainless steel, IP67/IP68 sealing, pressure-resistant enclosures, wide temperature range, and ATEX/IECEx certification. Output options include 4-20 mA, 0-10 V, SSI, CANbus, and Profibus. Applications include blast furnace charging, oxygen lance positioning, mold level control, ladle turret, segment adjustment, and hydraulic roll gap control. Selection should consider stroke, resolution, nonlinearity, temperature, pressure, hazardous area class, and cable protection. Correct mounting, grounding, and shielding reduce EMI from motors and welding. Regular checks of seals, connectors, and magnets improve uptime. By combining safety with precision, explosion-proof magnetostrictive displacement sensors support automation, productivity, and safer steel production. It is a reliable choice for harsh metallurgy.