Fully automatic electric pipe cutting machine designed for quick and efficient cutting of pipes with diameters ranging from 15-400 mm. The machine comes in two models: one for 15-220mm pipes with a maximum cutting thickness of 8mm for steel walls, 12mm for plastic, and 6mm for stainless steel, ideal for lightweight projects; and another for 75-400mm large-diameter pipes, capable of cutting through 10mm steel walls and 35mm plastic, perfect for industrial applications. Features an arched adaptive clamp with a user-friendly adjustment handwheel, making it compatible with pipes of 15-400mm in diameter. This design allows for easy size switching without the need for any tools, enhancing efficiency and convenience. Equipped with a 93hra grade ultra-fine alloy tungsten steel blade, boasting a bending strength of 1500mpa. This blade can effortlessly cut through super-hard materials like stainless steel and ductile iron, enabling quick cuts, such as a 6mm thick steel pipe in under two minutes. Incorporates precision cold cutting technology with 8 precision guide rollers to ensure a stable cutting trajectory, achieving an accuracy of up to ±0.05mm. This technology prevents high-temperature deformation and sparks, resulting in smooth, burr-free cuts. Versatile application across 12+ materials including stainless steel, PVC, galvanized, copper, and cast iron pipes. Suitable for a wide range of projects in water, electricity, gas, and decoration, making it a universal tool for various cutting needs.