NEWS


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2022

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07

2022-07-01

Influence of Carbon Migration and High Temperature Performance in Manhole Welding

Influence of carbon migration and high temperature performance in manhole welding. When dissimilar steel welded joints are subjected to post-weld heat treatment or work at elevated temperatures, carbon migration occurs near the fusion line, resulting in a decarburized layer of low-carbide-forming elemental pearlitic steel, and adjacent chromium-nickel austenitic welds Carburized layer.

01

2022

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07

2022-07-01

The production use and technological process of manhole flange!

The sealing failure of the manhole flange sealing joint is mainly manifested in leakage. In pipeline systems and devices in various industries, the sealing failure of flange joints can cause a lot of waste of energy and raw materials. If it is more serious, it will lead to scrapped equipment, shutdown of production, casualties and serious environmental pollution.

01

2022

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07

2022-07-01

Several surface treatment methods for manhole flanges!

Manhole flange storage tanks, containers, equipment accessories, especially in dairy, pharmaceutical, chemical, brewing and other equipment are essential accessories. The surface treatment of the manhole is not only related to its appearance, especially some dairy equipment will also affect its use. Therefore, its surface treatment is also a very important procedure in production.

01

2022

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07

2022-07-01

The purpose of stainless steel manhole flange!

The stainless steel manhole is a safety emergency ventilation device installed on the top of the storage tank. It is usually used in conjunction with a fire extinguisher and a mechanical breathing valve. It can not only avoid sudden overpressure or vacuum in the tank due to unexpected reasons, damage the storage tank and cause accidents. It also plays the role of safety fire prevention and is a safety device to protect the storage tank.

01

2022

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07

2022-07-01

What are the installations of atmospheric pressure manhole flanges?

Where is the atmospheric manhole installed? What is the product of atmospheric manhole? Atmospheric pressure manholes are the most common manholes. They are manholes without pressure. They are generally installed on the top of the tank. They are the entrances and exits for manufacturing workers or maintenance workers when building, cleaning and pouring tanks. The strength of the manhole is And sealing is the key to the technology, but for manholes with pressure, the strength and sealing requirements of normal pressure manholes are second.

01

2022

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07

2022-07-01

Application of Manhole Flange in Reactor

The reaction kettle is composed of a kettle cover, a cylinder body and a cylinder bottom. There is also a transmission and sealing device installed on the kettle cover to connect the stirring device. It is equipped with a manhole flange, a sight glass, a thermometer hole, a sample acquisition device and various connections.

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