Prefabricated buried insulation steel pipe, steel sleeve, steel insulation steel pipe manufacturer

Description :

　　Directly buried steam insulation pipe is composed of a steel pipe for conveying medium, a high-density polyethylene outer sleeve, and a polyurethane rigid foam insulation layer filled between the steel pipe and the outer sleeve. Simply put the steel pipe after rust removal and corrosion prevention into the polyethylene casing, and inject polyurethane foam in the middle to fully fill the gap between the steel pipe and the polyethylene casing, so that the steel pipe, casing and insulation layer can finally form a solid whole to achieve the effect of corrosion prevention and insulation; This anti-corrosion and insulation method can be elevated or buried underground, and the entire construction process can be carried out on site.

　　Low heat loss, energy-saving. Due to the waterproof, anti-corrosion, non moldy, and non insect properties of this material sleeve, it can effectively prevent condensation and prevent pipeline freezing. It is widely used for insulation in civil buildings, heating pipelines, air conditioning, and refrigeration equipment. Thermal insulation and energy-saving effect can be improved by 15-30%. The thermal conductivity of prefabricated polyurethane buried insulation pipes is λ=0.013-0.03kcal/m · h · oC, which is much lower than other commonly used pipeline insulation materials in the past, and the insulation effect is improved by 4-9 times. Moreover, its water absorption rate is very low, about 0.2kg/m2. The reason for low water absorption is that the closed cell rate of polyurethane foam is up to 92%. Low thermal conductivity and low water absorption, combined with insulation layer and high-density polyethylene or fiberglass protective shell with good waterproof performance, have changed the traditional situation of "wet cotton jacket" for laying heating pipelines in underground trenches, greatly reducing the overall heat loss of heating pipelines. The heat loss of the heating network is 2%, which is less than the international standard requirement of 10%.

　　Directly buried prefabricated insulation pipes have outstanding advantages over traditional insulation pipes:

　　1. Good insulation performance, with heat loss 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 a pipe trench, can be directly buried underground or in water, is easy and fast to construct, and has a low overall cost.

　　3. It also has good corrosion resistance and impact resistance under low temperature conditions, and can be directly buried in frozen soil underground.

　　4. The service life can reach 30-50 years, and correct installation and use can greatly reduce the cost of pipeline maintenance.

　　5. A reporting system can be set up to automatically detect pipeline leakage faults, accurately indicate the fault location, and automatically report.

　　Thermal insulation steel pipe is composed of steel pipe for conveying medium, anti-corrosion outer steel pipe and ultra-fine glass wool filled between steel pipe and outer steel pipe, or graphite, calcium silicate shell and polyurethane foam filled composite. The steel casing (steel sleeve steel) burial technology is a new burial technology that is waterproof, leak proof, anti-seepage, pressure resistant, and fully enclosed. It is a major breakthrough in the use of direct burial laying technology in areas with high groundwater levels. The insulation structure of steel sleeve steel insulation pipe is divided into internal sliding type and external sliding type according to different sliding methods. Internal sliding type: The insulation structure consists of working steel pipe, aluminum silicate, drag reduction layer, microporous calcium silicate, insulation layer, stainless steel fastening steel strip, aluminum foil reflection layer, polyurethane insulation layer, outer steel pipe, and external anti-corrosion layer. External sliding type: The insulation structure consists of a working steel pipe, a glass wool insulation layer, an aluminum foil reflective layer, a stainless steel fastening strap, a sliding guide bracket, an air insulation layer, an external protective steel pipe, and an external anti-corrosion layer.

　　Polyurethane direct buried insulation pipes, some people use insulation pipes underground, but because there are acidic and alkaline types underground, it can be very troublesome to use them. Acid and alkali have strong corrosive effects, and pipelines in such acidic and alkaline conditions will bring some adverse factors due to their own conditions. Therefore, people can better reflect the more typical mode of polyurethane direct buried insulation pipes. Polyurethane direct buried insulation pipes are indeed very good in this aspect, and their influence is even greater. When analyzed in combination with this model, this type of insulation pipe can bring better advantages in use, and can indeed better utilize the current situation of not producing corrosion based on this model. The mood has been reversed.

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• Prefabricated buried insulation steel pipe