OCTG

Rainbow-Steel Industry Co., Ltd. is the leader of China petroleum casing, oil pipeline, structural seamless pipe and seamless pipe for fluid, and has won many honors over the years.


The insulating layer of oil casing is made of aluminum silicate centrifugal cotton composite material (or other insulating materials), with good insulating effect. The vacuum technology of petroleum casing can be used to eliminate the electrochemical corrosion of outer wall of outer casing caused by moisture, and further enhance the insulation effect of the pipeline.

The OCTG carriage is made of special low thermal conductivity material. The friction coefficient of steel is about 0.1, and the friction resistance of pipeline is small. The fixed support, sliding support and steel working connection of oil casing adopt special design, which can effectively prevent pipeline hot bridge.



The direct buried pipe has a completely sealed drainage structure, and the connection point of the drainage pipe is lower than the working position or the position required by the design, without the need for additional inspection well. The steel casing is equipped with oil casing elbow, tee, bellows compensator, valve, etc. the whole working pipeline is in a completely sealed environment, safe and reliable.


The oil casing with internal fixation technology can completely cancel the external fixed concrete pier, save cost and shorten the construction period.


There is a gap of about 10-20 mm between the oil insulation layer and the sandwich steel pipe, which plays a role of further insulation. At the same time, it is also a very smooth tidal channel for the buried pipe, which makes the moisture drainage pipe really play a role. The function of timely drainage is that the signal pipe works at the same time, or it can be pumped into the low real air to insulate more effectively and reduce the corrosion of the outer wall of the shell.


The above is the introduction of the structure of the oil sleeve. Now we should know about it and ask if the oil sleeve can work in the bad environment. Therefore, we must strengthen the maintenance of the oil sleeve!


As we all know, the oil tank needs to be welded in use. What do you know about the welding nozzle? Let's learn about this together.

The heat insulation effect of the oil sleeve is usually able to withstand the high temperature of 120 ℃. Through modification or combination with other heat insulation materials, the temperature can reach 180 ℃, which is more suitable for the application of heating pipe. Therefore, what should be done at the interface to make the insulating pipe get better results? Usually, try to finish the welding port on the ground first, and then drop the pipe into the underpass. Because it is difficult to turn over, generally, the welding well needs to be dug for welding, and the oil casing is used for welding the weld below, i.e. positive welding.