Pressure-preserved hole-making is a safe, environmentally friendly, economical, and efficient in-service pipeline maintenance and emergency repair technology, suitable for normal maintenance and reconstruction of various medium pipelines such as refined oil and chemical media, as well as emergency repairs for sudden accidents (such as pressure maintenance, replacement of corroded pipe sections, installation of equipment, and distribution transformation, etc.).

And this is a method for creating interfaces on pipes and containers, where the pipes and containers are under pressure or in use during the drilling process. Additional branch pipes are added for input or output material, with temperature probe monitoring points set for equipment (blocking equipment) to provide connection points. Drilling does not require shutdown, thus not affecting production or material supply. Petrochemical industry: hydrocarbons, heavy oil and light oil, diesel, crude oil, engine oil, flammable and explosive toxic gases, and a variety of chemical products.