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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.

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WENHAO

2023

Why is Flange called Flange

Flange is also called flange or flange plate. The flange is the part that connects the pipe to the pipe and is connected to the end of the pipe.

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WENHAO

2023

Why can't the elbow be welded directly to the flange

Specifications have clear requirements, not allowed to construction, need to add 1.5 times the diameter of the straight pipe section.

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WENHAO

2023

Significant advantages of stainless steel stamping elbows

The density of the stamped elbow is 0.89-0.91g/cm, which is only one-tenth of the steel pipe. And because of the light weight, it can greatly reduce the transportation cost and the construction intensity of the installation.

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WENHAO

2023

Application of equal-diameter tee in different fields

Equal diameter tee is made of different materials, the output is different specifications and models, and the output is produced according to different scales, to ensure that the output is suitable for different industries and posts.

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WENHAO

2023

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Manager Li

Yinzhuang Industrial Zone, Mengcun Hui Autonomous County, Cangzhou City, Hebei province

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