300449 - Miller ProHeat Insulation Blanket for 21-Inch Pipe

Miller 300449 Insulation Blanket for PWHT Applications

The Miller 300449 Insulation Blanket is a critical accessory designed for professionals utilizing induction heating systems for Post-Weld Heat Treatment (PWHT). Specifically engineered to fit 21-inch diameter pipes, this blanket measures 24 inches by 76 inches, providing ample coverage to ensure consistent thermal management around the weld zone. In the demanding field of industrial welding, maintaining precise temperature control is paramount for stress relieving and preventing cracking in critical components. This insulation blanket acts as a thermal barrier, significantly improving the energy efficiency of the heating process by minimizing heat loss to the surrounding environment.

Beyond thermal efficiency, the primary function of this blanket is to protect the induction heating coils (liquid-cooled cables) from the extreme temperatures of the workpiece. By placing the blanket between the pipe and the coil, operators prevent direct contact damage and extend the lifespan of their heating cables. The material is constructed to withstand the rigorous heat cycles associated with PWHT, making it a durable and reusable solution for repeated field use. Whether working in petrochemical refineries, power generation plants, or pipeline construction, this accessory ensures that your heat treatment process meets the stringent requirements of welding codes.

Using the correct size insulation is vital for successful induction heating. This pre-cut blanket eliminates the guesswork and waste associated with bulk insulation rolls, allowing for faster setup times on 21-inch pipes. It ensures that the induction magnetic field couples effectively with the pipe while maintaining the necessary thermal gradient. For welders and heat treatment technicians relying on the Miller ProHeat 35 system or similar induction setups, the Miller 300449 is an indispensable tool for achieving high-quality, code-compliant results.

Key Benefits

• Thermal Efficiency: Maximizes heat retention in the pipe, reducing energy consumption and time to temperature.
• Equipment Protection: Provides a necessary buffer between the hot pipe surface and the induction cables.
• Perfect Fit: Pre-dimensioned for 21-inch pipes to ensure full circumference coverage without excessive overlap or gaps.