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Features: 1) Staight type pressing structure, high welding speed. Electro valve and gas cylinder are connected directle, increasing responding and apot welding sppeed, reducing air flow cost2) Perfect pressurization speed ajustment, descending speed of machine head pressurization can be adjusted at will, which softerns impact and lowers noise when pressurize the workpiece4) Reliable circular water cooling system, reducing cooling water cost substantially5) High strength steel performance, shock resistant, firm6) High power SCR element is adjusted for main loop, stable and reliableMain parameter (DTN-35/63/75):1) Rated input voltage (V): 380 2) Rated frequency (Hz): 50/603) Rated input capacity (kVA): 35/63/754) Duty cycle (%): 205) Throat depth (mm): 450/500/5006) Max. pressurization force (N): 60007) Electrode stroke (mm): 75/80/808) Welding thickness (carbon steel): 3+3/3.5+3.5/4+49) Weight: 220/300/320kg