The DEEP Robotics X20 is an industrial-grade quadruped robot built for patrol inspection under extreme conditions. Standing 950 by 470 by 700 mm and weighing 53 kg, it carries up to 20 kg payload at speeds up to 4 m/s. It handles 30-degree slopes, obstacles and stairs over 20 cm, and diverse terrain including grass, sand, snow, gravel, and standing water. With IP66 protection, it supports all-weather operation and delivers 2 to 4 hours of runtime with a 15 km range. It features precise navigation, dynamic obstacle avoidance, terrain recognition, and human-robot interaction capabilities. A modular design with plentiful interfaces supports peripheral integration for power, utilities, rescue, tunnel, mining, and construction.