Twin wires submerged arc welding technology is an efficient way for the high-speed welding of heavy workpiece of the low carbon steel. A novel inverter twin wires high effect submerged arc welding equipment is proposed by combination of the inverter welding power source of direct current (DC)1250A and alternate current (AC) square wave 1000A, digital cooperative control and process monitoring technology. Digital cooperative control system are designed by combination of the a computer, TCP/IP based data collection and monitoring module, twin wires submerged arc welding control box and sensor detection system. The TCP/IP based data acquisition and monitoring module consist of Advanced RISC Machines (ARM) controller, A/D module, D/A module, network interface and digital I/O ports. The results of welding experiment demonstrate that the novel developed twin wires submerged arc welding equipment meets the designed requirements with strong adaptability, which achieves the functions of parameters optimization settings, digital timing control of the twin arcs, and real-time monitoring of the welding process. The proposed equipment has good application prospect in twin wires submerged arc welding of steel plate at high welding speed more than 100cm/min due to the strong adaptability in welding process.