Steel-sheathed steel insulated steel pipe
manufacturers go beyond unlimited steel-sheathed steel direct-buried steam insulated steel pipes, which are composed of anti-corrosion outer steel pipes for transporting media and ultra-fine glass wool filled between the steel pipes and outer steel pipes. Graphite silicon can also be used It is made of calcium tile shell and filled polyurethane foam. Steel casing steel casing steel burial technology is a new waterproof, leakage-proof, seepage-proof, pressure-resistant and fully enclosed burial technology. It is a major breakthrough in the use of direct burial laying technology in areas with high groundwater levels. The primary issue for the protection pipe of directly buried pipelines is the reliability of tight waterproofing. In addition, it must have good mechanical strength. Steel casings are welded due to their high strength, and the waterproof sealing performance is very reliable. In addition, its high temperature resistance is also It is unmatched by other external protection tubes. In areas with high groundwater levels, in order to ensure that groundwater does not affect the normal operation of directly buried steam pipelines, it is best to use a strong and airtight steel pipe shell as the outer protective layer. Product Introduction of Steel-Sleeved Steel Direct Buried Steam Insulated Pipe
Steel-Sleeved Steel Direct-Buried Steam Insulated Pipe Steel-Sleeved Steel Direct-Buried Steam Insulated Pipe is composed of an anti-corrosion outer steel pipe for transporting the medium, and a super filling space between the steel pipe and the outer casing. Made of fine glass wool.
The insulation structure of steel-sheathed steel direct-buried steam insulation pipes is divided into internal sliding type and external sliding type according to different sliding methods
Application
Steel-sheathed steel directly-buried steam insulation pipes are widely used for liquid gas Transportation pipeline network, chemical pipeline insulation project, petrochemical centralized heating network, central air conditioning ventilation pipeline, municipal engineering, etc.
Insulation, sliding lubrication and waterproofing of exposed pipe ends using steel sheathed steel directly buried steam insulation pipes. Insulated pipes not only have advanced technical and practical performance that are difficult to match with traditional trenches and overhead pipes, but also have significant social and economic benefits, and are also a powerful measure for heating and energy saving.
Steel-sheathed steel steam insulation spiral steel pipe structures are divided into the following two categories according to different sliding methods. The internal sliding insulation structure is made of working steel pipe aluminum silicate drag reduction layer microporous calcium silicate insulation layer stainless steel fastening steel strip aluminum foil reflection It consists of a polyurethane insulation layer and an outer anti-corrosion layer on the steel pipe. The external sliding insulation structure is composed of a working steel pipe, a glass wool thermal insulation layer, an aluminum foil reflective layer, a stainless steel fastening steel belt sliding guide bracket, an air insulation layer, and an outer anti-corrosion layer of the steel pipe.
It is undeniable that some steel companies have significantly improved their quarter-on-quarter profits in the first quarter, but does this mean that the downward pressure in the medium and long term has been reduced? Industry insiders said that the rebound in steel prices at the end of the year stems from the recovery of demand. This kind of Although seasonal factors have an impact on the profits of steel companies, in the long term, steel demand may have peaked, and the contradiction between supply and demand in the steel industry is difficult to reconcile, and the industry's profits continue to be under downward pressure. Considering the future development direction of the industry, under the supply-side structural reform, the transformation and upgrading of steel companies will inject new vitality into the industry.
The recovery in steel prices failed to boost performance
Whether analyzing the annual report or the first quarter report, the net profit loss of listed steel companies is really expected. In fact, since the beginning of this year, due to the continued sluggish terminal demand, the profits of my country's steel industry have continued to deteriorate. According to statistics from GF Securities, the total annual net profit attributable to the parent company of a listed steel company is 100 million yuan, which means that each company loses 100 million yuan on average.
Similarly, from the perspective of the entire industry, it is difficult to say that the performance of my country's steel industry is improving against the background of economic downward pressure and economic structural adjustment. At the end of this year, the China Iron and Steel Industry Association released data saying that in 2019, member steel companies achieved sales revenue of one trillion yuan, a year-on-year decrease of 100 million yuan in total losses, and the loss was that the output of loss-making companies accounted for 1% of the steel production of member companies. The China Iron and Steel Association stated that the continued decline in steel prices is the direct cause of difficulties in production and operation of enterprises.