Prefabricated direct buried polyurethane firing insulation steel pipe for therma

Polyurethane insulation pipes have outstanding advantages over traditional types of insulation pipes:
1. Good insulation performance, with a heat loss of only 25% of traditional pipes. Long term operation can save a lot of energy and significantly reduce energy costs.
2. It has strong waterproof and corrosion-resistant capabilities, does not require the installation of pipe trenches, and can be directly buried underground or in water. The construction is simple and fast, and the overall cost is low.
3. It also has good corrosion and impact resistance under low temperature conditions and can be directly buried in underground frozen soil.
4. The service life can reach 30-50 years, and correct installation and use can make the maintenance cost of the pipeline network extremely low.
Introduction to Prefabricated Insulation Internal Fixed Support Technology
The production method of the main fixed bracket is to weld two outer protective pipes together through flange plates, forming a relatively fixed whole. The working pipe passes through the middle of the connected outer protective pipes and undergoes anti-corrosion treatment between the working pipe and the outer protective pipe. The thickness of the flange plate is 15-40mm, and the thickness of the flange plate can also be selected based on the diameter and pressure of the pipeline, At the beginning, manufacturers usually have this type of finished product with a special cost. The material price is expensive, and the flange part of the protruding outer protective pipe should be reserved for a certain length to fit with the cement pier and maintain fixation with the cement pier. The purpose is to prevent axial and lateral displacement of the overall pipeline. There are two methods for laying heating pipelines: compensation and no compensation. At present, uncompensated design is the mainstream. In this case, it is only necessary to calculate the expansion and contraction of the pipe section sufficiently, and natural bending compensation is used without the need for compensator. Usually, it is laid without compensation in direct burial