Uses: Suitable for mold, crankshaft, valves and other products on the surface nitriding treatment characteristics: electrical control intelligent PID temperature controller and automatic temperature recording instruments, the salt solution temperature uniformity and stability. Specifications Model Working Dimensions (mm) heating power (Kw) QPQ-90 ￠ 800 × 1300 90 QPQ-105 ￠ 800 × 1350 105 QPQ-140 ￠ 900 × 1500 140