High temperature pre-insulated pipes are used to transport hot liquids or gases from one location to another. These pipes are typically made from a steel or iron inner pipe, covered with a layer of insulation material, and then encased in an outer casing. The insulation material helps to keep the heat inside the pipe, while the outer casing protects the insulation and inner pipe from damage. Pre-insulated pipes are used in a variety of applications, including oil and gas production, power generation, and district heating and cooling systems. They are typically rated for temperatures up to 260°C (500°F) or higher.