Oil casing

Rainbow-steel  industry has been providing customers with high quality oil casings, oil pipelines, seamless steel pipes and seamless steel pipes for many years. Our products are of high quality and low price. Welcome to choose.



Fuel tank:

Executive standard: one is made of superfine glass wool, which is filled with medium-sized steel pipes for transportation, anti-corrosion coated steel pipes, steel pipes and external steel pipes. It can also be made from graphite, calcium silicate brick and shell and polyurethane foam. The embedding technology of steel sleeve (steel sleeve) is a new technology of waterproof, leakproof, impervious, compression and full sealing. This is a major breakthrough in the application of direct burial technology in the area of high groundwater level. The first problem is that the reliability of the buried pipe is strictly waterproof. In addition, it has good mechanical strength. Due to the use of high-strength steel sleeve welding connection, the reliability of the waterproof sealing performance is very high. In addition, the high-temperature performance and other external protective pipes can match. In the area with high groundwater level, in order to ensure that the groundwater does not affect the normal operation of the steam directly buried in the pipeline, the outer protective layer is best constructed with a solid and sealed steel pipe shell.



The oil casing insulation structure based on sliding mode is divided into sliding type and sliding type 1. The sliding type insulation structure is based on: steel, aluminum silicate, calcium silicate, current blocking layer, insulation layer, stainless steel fastener, aluminum foil reflector, polyurethane insulation layer and outer jacket, anti-corrosion layer. 2. External sliding type: the insulation structure is composed of working steel pipe, glass wool insulation, aluminum foil reflector, stainless steel fastening belt, sliding guide bracket, air insulation layer, external protective steel pipe and external anti-corrosion coating.


Tubing and bushing is a kind of super fine glass wool, which is made up of steel, middle layer anticorrosive steel pipe and steel pipe and outer steel pipe. It can also be filled with graphite, calcium silicate tile and steel bushing filled with polyurethane foam composite material. (steel) embedded technology is a new technology of waterproof, leak proof, anti osmosis compression and airtight laying. It is a buried area with high underground water level. The breakthrough of technology is the primary protection of buried pipeline, strict waterproof reliability. In addition to good mechanical strength, due to the use of high-strength oil casing for welding connection, the waterproof sealing performance is very reliable. In addition, there is no way to compare the high underground water level in high temperature resistance and other external protection pipes to ensure that the water will not affect the steam pipe. In normal operation, the external protection layer is most suitable for the solid enclosed steel pipe shell.