Black Jacket Polyurethane Foam Insulated Steel Pipe Manufacturer Widely Used

Black jacket polyurethane foam insulation pipe foam has good mechanical properties and thermal insulation. Application of polyurethane insulation pipe: Polyurethane insulation pipe is used for the insulation of various indoor and outdoor pipes, central heating pipes, central air conditioning pipes, chemical industry, and other industrial pipes. , cold insulation project. Overview Polyurethane foam insulation
Since the birth of polyurethane synthetic materials in the 1930s, pipes have been developing rapidly as an excellent thermal insulation material. It has significant energy-saving and anti-corrosion effects and is widely used in various
Various pipelines for heating, oil, steam, etc. It is widely used in various pipelines such as heating, refrigeration, oil transportation, and steam transportation.
Performance characteristics
Use rigid polyurethane with low thermal conductivity and good thermal insulation performance as the thermal insulation material, which has excellent thermal insulation.
After normal operation, when water with a temperature of ℃ is transported to kilometers away, the temperature drop is only about ℃.
, has strong waterproof and corrosion resistance, no need for attached pipe trenches, and can be directly buried in the ground or water. The construction is simple and fast, and the overall cost is low.
It also has good corrosion resistance and impact resistance under low temperature conditions, and can be directly buried in the frozen soil layer.
The prefabricated insulation pipe uses a corrosion-resistant outer casing, which is not affected by biological and chemical corrosion.
, Pipes of various diameters and insulation thicknesses and matching pipe fittings (elbows, tees, reducers, fixed joints, etc.) can be provided according to user needs
In order to ensure that prefabricated straight The trinity of buried insulated pipes, the outer surface of the steel pipe is treated before foaming, and the inner surface of the plastic pipe is corona treated. Among them, the rust removal level meets the requirements, and the surface tension inside the outer shell pipe reaches dyne/cm.
The polyethylene outer protective pipe is made of high-density polyethylene material, supplemented by various additives such as antioxidants. The raw materials and product quality are strictly inspected to ensure that the product quality meets the standards
and the technical requirements for external protection pipes of directly buried pipes, which improves the overall quality of external protection pipes. See the table below for specific technical indicators.
The thermal insulation protective layer engineering method has major defects but low project cost, and is adopted by many construction parties. If the thermal insulation layer is aluminum silicate felt wrapped with calcium silicate, and the outer layer is high-temperature-resistant polyurethane, the effect is still
Better, as long as the hand-pasted FRP does not seep water, it can also be used if the insulation layer is rock wool or the polyurethane foam composite insulation on the outside of the rock wool. Since the insulation layer cannot bear weight, if it is a steam pipe, it will inevitably cause damage to the lower side of the pipe. The insulation layer is compressed, causing the temperature of the FRP to be too high. After a period of time, the mechanical strength is reduced. Due to soil settlement, the FRP breaks and is accompanied by the infiltration of rainwater, which accelerates the corrosion of the pipeline and increases the heat of the pipeline. loss. For example, the directly buried steam pipeline constructed in the early stage of a development zone followed this engineering practice. The heat loss of the pipeline was very large, and the excavated heating pipes were severely corroded. The original fiberglass protective layer no longer had much mechanical strength. Especially in summer, the corrosion of directly buried pipes that are not used only for heating is more serious. Therefore, it is very necessary for the directly buried heating pipes to be well insulated to ensure that the outside temperature is not too high. The insulation layer must be impermeable to water
and it is also an important part of the construction.
The vacuum layer completely eliminates heat conduction and heat convection in the air layer, greatly reducing heat loss. Compared with the air layer structure, the outer wall temperature d can be reduced under the same insulation thickness. The vacuum device completely solves the problem that the inner wall of the outer steel casing is easily corroded by hot and humid air, and greatly improves the operating life of the directly buried steam pipeline. Product
The lifespan is increased to years. The original slurry type epoxy coal pitch anti-corrosion coating product is an epoxy coating product with excellent anti-corrosion properties and good adhesion, impact resistance and wear resistance
Its components include: epoxy resin paint, coal tar pitch, epoxy solid agent, anti-corrosion pigments, extender pigments, additives and solvents, etc.! Its main color is black
Its main uses are oil and gas transmission pipelines, steam pipelines, mining insulation pipelines, water pipelines, gas pipelines, heating pipelines, power plants, cooling water pipelines for industrial and mining enterprises, chemical industry
Anti-corrosion treatment of steel storage tanks, inner walls and bottom plates of gas cabinets used in factories, sewage treatment plants, refineries, etc.
Introduction to the main differences between straight seam steel pipes and seamless steel pipes. The main differences between straight seam steel pipes and seamless pipes include production technology and application. Straight seam pipes are iron plates, produced through
bending, joining, welding and other processes. One weld is allowed. Seamless pipes are hot-rolled from round steel through a pipe rolling machine and have no welds. Our company is a manufacturer specializing in the production of straight seam steel pipes and seamless steel pipes. The company has strong strength and superb technology, and is equipped with high-standard physical and chemical laboratories and advanced testing equipment. Straight seam steel pipes are made of steel strips that are curled and welded. Seamless pipes have no welding gaps. Seamless pipes are an integral circular steel pipe made directly from round steel. They are made of steel blanks. Pulled out directly.
Straight seam welded pipes are steel pipes made of steel plates or steel strips that are crimped and welded. The production process of welded steel pipes is simple, the production efficiency is high, there are many varieties and specifications, and the strength is generally lower than that of seamless pipes
. The main differences between straight seam steel pipes and seamless pipes are production technology and application. Straight seam pipes are iron plates produced through processes such as bending, joining, and welding. One weld is allowed. Seamless pipes are hot-rolled from round steel through a pipe rolling machine and have no welds. When the diameter and wall thickness of seamless pipes and straight-seam pipes are equal, the pressure and strength of seamless pipes are much greater than those of straight-seam pipes. Generally, seamless pipes are chosen for engineering pipes with relatively high pressure, and straight-seam pipes with lower cost are chosen for projects with no pressure or relatively low pressure if possible.