Insulated steel pipe polyurethane foam manufacturer

Cangzhou Tianyuan Anti-corrosion Engineering Co., Ltd. Zhang
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 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, because the insulation layer cannot bear load, if it is a steam pipe, it will inevitably cause the insulation layer on the lower side of the pipe. Being compressed causes the FRP temperature to be too high, and the mechanical strength decreases after a period of time. 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 loss of the pipeline. For example, the directly buried steam pipelines built in the early stages of a development zone used this engineering practice. The heat loss of the pipelines was very large, and the excavated heating pipelines were severely corroded. The original fiberglass protective layer no longer had much mechanical strength, especially in the summer when it was not necessary to Directly buried pipes for heating are more severely corroded. Therefore, it is very necessary to insulate the directly buried heating pipes to ensure that the outside temperature is not too high. It is also an important part of the construction to ensure that the insulation layer is impermeable to water.
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 life is extended 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 and 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 plants, sewage treatment plants, and refineries. Anti-corrosion treatment of steel storage tanks, inner walls and bottom plates of gas cabinets used.
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 that are 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. 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 completed by welding with strip steel. Seamless pipes have no welding gaps. Seamless pipes are made directly from round steel to form an integral circular steel pipe and are directly pulled out of steel blanks.
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 that are 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 that of straight-seam pipes. Generally, seamless pipes are chosen for engineering pipes with relatively high pressure. For projects with no pressure or relatively low pressure, lower-cost straight-seam pipes are chosen if possible.