The steel sleeve steel steam insulation pipe is tightly combined with a steel pipe for conveying the medium, a polyurethane rigid foam insulation layer and a high-density polyethylene outer sleeve. This product is mainly used for urban central heating pipe networks, oil pipelines, and water delivery in high-cold areas. Pipeline and industrial pipeline engineering in the factory area. It has the advantages of high-efficiency heat preservation, waterproof and anti-corrosion, and easy construction. It is not afraid of plant roots. The construction does not need trenches. It can be buried directly in the 0.6-1.2m frozen soil layer. The heat loss is more than traditional technology. Reduced by 40%, the service life is more than 3-5 times longer than other heat-insulating anti-corrosion materials, and the service life can reach 30-50 years.

　　Performance indicators of steel-clad steel steam insulation pipe: The overall performance of the direct-buried insulation pipe is excellent, and the outer surface of the steel pipe is shot blasted and the corona treatment process on the inner surface of the outer protection pipe is strictly implemented to further improve the bonding performance of the insulation pipe. The material of the insulation layer is rigid polyurethane foam with a density of 60kg/m3 to 80kg/m3, which fully fills the gap between the steel pipe and the casing and has a certain bonding strength, so that the steel pipe, the outer casing and the insulation Form a solid whole.

　　Polyurethane foam has good mechanical properties and thermal insulation properties. Normally, it can withstand a temperature of 120°C, and can withstand a temperature of 180°C through modification or in combination with other insulation materials.

　　There are many kinds of application functions of steel sleeve steel insulation pipe. But among so many varieties, where are the advantages of steel sleeve steel insulation pipes reflected in the current mainstream steel sleeve steel insulation pipe varieties. Most users have chosen steel sheathed steel insulation pipes. Why is this? First and foremost, the steel sheathed steel insulation pipe is of very stable quality. Because other types of steel-sleeved steel insulation pipes may be very convenient to use when they are just being used. However, as time goes by, such a steel-clad steel insulation pipe simply presents quality problems.

　　For example, plastic pipes can prevent rust problems. But this kind of pipe, if it is exposed to the sun at all times, itself becomes very brittle. Steel sleeve steel insulation pipes are used very frequently in many occupations. It can be said that the steel sheathed steel insulation pipe has a very close connection with my life. If I were more careful, then I would find out. The steel sheathed steel insulation pipe we are currently using is moving towards a collection of raw materials, which is the steel sheathed steel insulation pipe.

　　The reason why the sizing machine plays the role and working principle of the steel-steel-steel-insulated pipe during production is one. Working principle The service life of the bearing in the sizing roller box restricts the service life of the sizing roller box. The service life of the bearing is also very important to the design of the sizing roller box, the manufacture and installation of the steel sleeve steel insulation pipe. The round steel of different specifications is formed by roll or row roll forming. The seamless steel tube blank is passed through a sizing machine to determine the inner hole and outer circle of the seamless steel tube.

　　The basic type of No. 20 steel sleeve steel insulation pipe factory production equipment sizing machine has a small number of working frames, generally 3-12. The sizing machine is divided into longitudinal rolling sizing machine and cross rolling sizing machine. The cross-rolling sizing machine is generally distributed in the three-roll cross-rolling tube mill. The steel insulation pipe has such a good market prospect. That is the steel sleeve steel insulation pipe, which has its own unique advantages. The steel sheathed steel insulation pipe of other raw materials, more or less in some respects, has some shortcomings.

　　The role of the steel sleeve steel insulation pipe is really too much. It is very simple to operate. It can be buried in the ground, and it will not be corroded or affected by various environments. It is very strong, so the pipe is used in construction There are many applications on it.