Answer: The reason for having to install an oil pipeline under the seaboard is to transport oil from one place to another, only piping is installed under the seabed. Because non-oil producing countries still have to buy oil from oil-producing countries. If the distance of transportation is not too far, they can use the system of pipelines under the sea to transport, direct oil to the oil shortage. But if the distance between the two countries is too far, it is mandatory to use large tankers for transport. Even water can be stored in large oil reservoirs on the seabed, waiting for the oil tanker to take off.
The large oil pipelines on the seafloor are extremely sturdy, the amount of oil stored inside is not very large when needed can be removed at any time, and can also use the barge bottom for transport. However, the oil pipes must be buried under the seabed to avoid damage to fishing nets.
Answer: First of all, you should know that crude oil is a mixture of organic substances, mostly compounds of hydrocarbon, in the alkane.
Which is a mixture cannot always carry a certain quality of a certain component that depends on each type anymore.
The chemical composition of the oil is separated by fractional distillation. Products derived from refining include kerosene, benzene, gasoline, paraffin wax, asphalt etc.
Answer: In 1997, from the research project of the Ministry of Science “Research, design, fabrication of sheet metal cutters,” the scientists from the Institute of Machinery and Industrial Instruments (IMI) studied. design, manufacture of CP 2580 – CNC plate cutter using gas-plasma, automatic control. The advantage of this cutting system is that the operator can directly or indirectly program the shape of the machine.
With conventional techniques, in order to create complex shapes on steel plates with a thickness of nearly 20mm, sampling and adjustment of hand tools take up to 70% of the time of manufacture. With gas-plasma cutting machine, thanks to the pre-programmed and automatic cutting process, the cutting of parts takes only 20% of the time of product manufacture, and the accuracy of the parts is very high.
Source: (According to chaobuoisang.net)