The insulation performance of PU insulated spiral steel pipe depends mainly on the PU insulation layer. The key properties of rigid PU foam are thermal conductivity, flame retardancy, compressive strength, bond strength, water absorption, and density. Below, PU Insulated Steel Pipe Manufacturer Let us look at the classifications together.
I: Thermal Conductivity
In general, the lower the thermal conductivity, the better the insulation. For external wall insulation, it is specified to be not greater than 0.024.
II. Flame Retardancy
For example, the commonly known B2- or B1-grade PU boards
III. Compressive Strength
The higher the compressive strength the better, and the less likely to deform; generally greater than 150 kPa
IV. Bond Strength
The higher the better; greater than 150 kPa
In short, as an insulation material, rigid PU foam is widely used in petroleum, chemical, transportation, construction, daily life, and other fields. Data show that pipelines insulated with rigid PU foam can reduce heat loss by 35% compared with conventional pipelines, saving a large amount of energy and reducing maintenance costs. In addition, it has excellent waterproof and anti-corrosion performance, can be buried directly underground or in water, and has a service life of 20–30 years or more.
Large-diameter anti-corrosion spiral steel pipe is spiral pipe with internal or external anti-corrosion treatment; quality therefore depends primarily on the pipe material and welding quality, while the coating is a means of extending service life.
If you still have questions about what our PU insulated steel pipe manufacturer's editor introduced, you may inquire directly at the following URL: https://www.sdhpgy.com
