***Direct burial Thermal insulation pipe Manufacturer quotation
Composition of directly buried insulation pipe:
1 Work Steel pipe : According to the requirements of transmission medium, seamed steel pipe, seamless steel pipe and double submerged arc spiral welded steel pipe can be used.
2 Insulation layer: hard polyurethane Foam plastic 。
3. Protective shell: high-density polymer ethylene Or fiberglass.
Features of directly buried insulation pipe:
1. Reduce project cost.
2. Low heat loss and energy saving.
3. Anti corrosion, good insulation and long service life.
4. Small land occupation, fast construction, and favorable for environmental protection.
5. Security.
***Quotation of directly buried insulation pipe manufacturer
Application of directly buried insulation pipe:
The directly buried thermal insulation pipe is suitable for the thermal insulation and cold insulation engineering of conveying various media within the range of - 50 ℃ - 150 ℃. Directly buried insulation pipes are widely used in liquid and gas transmission pipeline networks, chemical pipeline insulation projects, petroleum, chemical, central heating and heating networks, air conditioning and ventilation pipelines, municipal projects, etc. Directly buried thermal insulation pipe is a kind of thermal insulation pipe with good thermal insulation performance, safety and reliability, and low project cost. It effectively solves the 130 ℃ - 600 ℃ high temperature heat transfer in urban central heating. The directly buried insulation pipe not only has the traditional trench and overhead pipeline laying technology and practical performance, but also has social and economic benefits, and is also a powerful measure for heat supply and energy conservation.
Common problems and solutions in the construction of directly buried insulation pipes:
1. The starting speed of directly buried insulation pipe is slow
This phenomenon usually occurs in autumn and winter or morning construction, because the temperature suddenly drops or the temperature is low. The problem can be solved by raising the ambient temperature and black material temperature. Generally, raise the temperature of black material to 30-60 ℃ and the ambient temperature to 20-30 ℃.
2. Quick starting speed of directly buried insulation pipe
This phenomenon usually occurs in spring and summer or at noon, because the temperature suddenly rises and the temperature is too high. The black material can be cooled with cold water or placed outdoors at night for natural cooling to avoid direct sun exposure.
3. The foam strength of directly buried insulation pipe is low and the foam is soft
This phenomenon is caused by the proportion of black and white materials. It can be achieved by properly increasing the proportion of black materials (1:1-1.05). Note that the proportion of black materials should not be too large, otherwise, the foam will become brittle and the foam performance will be affected.
***Quotation of directly buried insulation pipe manufacturer
Future development of directly buried insulation pipe:
Buried insulation pipe has become a mature technology in some developed countries. In recent ten years, through digestion and absorption of this technology, China's heating engineering technicians are promoting the development of domestic pipe network laying technology to a higher level.
The main feature of directly buried insulation pipe is that its service life can reach 30-50 years, the insulation pipe has good thermal insulation performance, and the heat loss is only 25% of that of traditional pipes. Long term operation can save energy and reduce energy costs. It has strong waterproof and corrosion resistance, simple and rapid construction, and low comprehensive cost.
