... and higher output power2.with constant current and constant power control to greatly optimisze the heating process of metals,realize efficiency ... Etc. such as steel pipe stretch, elbow, iron wire, steel wire heating make pin, stainless steel products annealing, stretch, expanding ... :Model: WH-VI-36 Output power: 36KW Input voltage: three-phase four-wire 380V 50-60HZOscillation frequency :25- ...