Insulation joints find their primary application in the oil and gas industry. In this industry, pipelines and equipment are exposed to harsh environmental conditions, such as extreme temperatures, corrosive substances, and high pressure. Insulation joints play a crucial role in ensuring the integrity and efficiency of these systems.

Key words:

Metal Pipe

Why the manhole from the top down

The main consideration is the reason for ventilation, it is closed before opening, if it is opened from the bottom up, it is difficult to open a manhole above, because there is a high concentration of toxic and harmful gases inside, opening from the top first, there is no convection, so toxic gases are not easy to come out, conducive to opening manholes, sealing manholes is the same reason.

Key words:

Metal Pipe

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