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How to install weld neck flange and flat welding flange

How to install weld neck flange and flat welding flange

Flange is a common part in piping system. They are mainly used to connect shafts and shafts or to connect two devices. In general, flanges are used with gaskets and bolts. The purpose is to fix two pipes, pipe fittings or equipment on the flange, ...

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The essence of pipeline valve

The essence of pipeline valve

The essence of pipeline valve In the pipeline system, the valve is the control element, just like the human hand, so whether in life or in all walks of life, its importance is self-evident. What are its functions? How to install pipeline valve? Next, let’s ...

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The problem of heat treatment defects of medium thick steel plate and its treatment method

The problem of heat treatment defects of medium thick steel plate and its treatment method

With the development and progress of medium thick steel plate technology, people pay more attention to the product quality, and the production enterprises pay more attention to the requirements of product quality and energy saving. From the current development situation in the ...

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Influence of forging on metal structure and properties of forged flanges and its defects

Influence of forging on metal structure and properties of forged flanges and its defects

Effect of forging on microstructure and properties of metal In forging production, in addition to ensuring the required shape and size of forged flanges, it must also meet the performance requirements of parts in the process of use, which mainly include: strength ...

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What is quenching, tempering, normalizing and annealing

What is quenching, tempering, normalizing and annealing

The differences of normalizing, tempering, annealing and quenching lie in different processes, different changes of material structure and different results of material properties. What is quenching? Quenching of Steel is to heat the steel to the critical temperature above Ac3 ...

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Main factors affecting flange sealing performance

Main factors affecting flange sealing performance

Bolt pre-tightening force An important factor affecting sealing. The pre-tightening force must compress the gasket to achieve the initial seal. Properly increasing the bolt pre-tightening force can increase the sealing ability of the gasket, because increasing the pre-tightening force can make the ...

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Austenitic stainless steel should also pay attention to: cold work hardening, high temperature aging embrittlement

Austenitic stainless steel should also pay attention to: cold work hardening, high temperature aging embrittlement

The intergranular corrosion tendency test of stainless steel is a common content in design documents, and the relevant content in standards such as HG/T 20581 is relatively clear. The water pressure test or the chloride ion content in the operating medium is ...

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How to correctly select special valves such as drain valve, safety valve and pressure reducing valve?

How to correctly select special valves such as drain valve, safety valve and pressure reducing valve?

In the fluid pipeline system, the valve is the control element, whose main functions are opening and closing, throttling, regulating flow, isolating equipment and pipeline system, preventing medium backflow, regulating and discharging pressure, etc. There are many kinds of valves with complex varieties. ...

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How to design the size of axial positioning pipe sleeve forgings?

How to design the size of axial positioning pipe sleeve forgings?

In order to prevent the pipe sleeve forging from axial movement under axial load, the axial positioning device is applied to the bearing on the shaft and in the hole. How to design the size of axial positioning pipe sleeve forging? ...

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What is silver bright steel?

Silver bright steel It is also called silver steel branch, commonly known as bright round bar or smooth circle. It refers to the round steel with bright surface without rolling defects and decarburization layer. All kinds of steel, carbon steel, easy cutting ...

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