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Polishing Methods for Duplex Steel Flanges

There are four types of polishing methods for dual-phase steel flanges: manual, mechanical, chemical and electrochemical. The corrosion resistance and decoration of the flange can be improved by polishing. The existing stainless steel electropolishing solution still uses phosphoric acid and chromic anhydride. During the polishing and cleaning process, some chromium and phosphorus will be discharged into the waste water. pollution of the environment.

2021

03-25

How To Anneal Butt Welding Flange

The shielding gas pressure of the butt welding flange is to avoid slight leakage of the butt welding flange. The shielding gas in the furnace should be connected to a certain positive pressure. Assuming that it is hydrogen shielding gas, it is generally required to be above 20kBar.

2021

01-25

The Characteristics And Sealing Principle Of Flat Welding Flange

Flat welding flanges refer to flanges that are connected to vessels or pipes by fillet welding. It can be any flange.

2021

03-25

Characteristics Of Butt Welding Flanges

Butt welding flanges can be connected to the pipeline to maintain the sealing performance of the pipeline. Butt weld flanges allow for easy replacement of pipe sections, easy disassembly and inspection of pipe condition, and easy sealing of pipe sections made of carbon steel.

2021

03-25

Scope And Application Of Butt Welding Flange

Butt welding flange is a kind of pipe fitting. Butt welding flanges, also known as split flanges, refer to flanges with neck and round pipe transitions and butt connections with pipes. Flanges are the components that connect pipes to each other and to the ends of pipes.

2021

03-25

Advantages And Disadvantages Of Flat Welding Flanges

Flat welding flanges are mainly used for gas valves and natural gas pipelines. Because the short neck can improve the stiffness and load-carrying capacity of the flange. Flat welded flanges are used for general media.

2021

03-25

What Aspects Should Be Paid Attention To When Using Stainless Steel Flanges

Stainless steel flange is a flange that extends steel pipes, pipe fittings, etc. into the flange and connects with equipment or pipelines through fillet welds.

2021

03-25

Conditions Of Use For Weld Neck Flanges

Weld neck flanges are suitable for piping systems with relatively low pressure levels, small pressure fluctuations, and less severe vibration and shock. The advantages of flat welding flanges with necks are that they are easier to align during welding and assembly, and they are relatively inexpensive, so they are widely used.

2021

03-25

Butt Welding Flange Flaw Detection Treatment

Welding spatter, iron filings, grease and other external impurities should be removed from the moving area of the probe. The flaw detection cousin should be flat and smooth to facilitate the free scanning of the probe. The surface roughness R.<6.3μm should be ground if necessary.

2021

03-25

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