Moscow, Russia, natural gas pipeline system. The project is a key municipal project in Moscow, Russia. The total investment of the project is 550 million yuan. It will cover an area of 65,000 square meters. It will build a natural gas pipeline supporting project in Russia's high-end residential areas. The local government attaches great importance to it and can realize the utilization of tens of thousands of natural gas. It is expected that the problem of tens of thousands of people will be solved by the end of 2019.
Henan Shunying introduces you to the special corrugated braided hose for natural gas pipeline:
Carbon steel painted flange corrugated braided hose is mainly composed of bellows, mesh sleeve, flange and joint. The inner tube is a thin-walled stainless steel bellows having a spiral or toroidal shape. The outer sleeve of the bellows is made of stainless steel or steel strip according to certain parameters. The joints or flanges at the ends of the hose are matched to the union flanges of the customer's piping. The metal hose is the main pressure-bearing part of the hose installed in the pressure line, and at the same time, the bellows is sheathed.
In complex piping systems, there are often difficulties due to space position conditions, resulting in installation difficulties: the formed pipe can not be loaded; bending over, coming over, making up the installed pipe will inevitably produce local Cold correction. Depending on the pipe diameter and the specific conditions on site, the amount of cold correction ranges from a few millimeters to tens of millimeters, and some hundreds of millimeters. Practice has proved that the larger the amount, the higher the internal stress, and the installation stress of these residues in the pipeline system is undoubtedly a great hidden danger.
Because the internal stress generated by bending and bending under the rated bending radius is very small, the metal hose can bring great convenience to the installation work, and also plays a certain role in ensuring the safe operation of the pipeline system. . This is the main reason why some piping systems must use metal hoses.