304 industrial stainless steel welded pipe

There are many factors causing the rust of 304 industrial stainless steel welded pipe, such as welding rod welding, stainless steel rust, etc., so the common stainless steel rust point is near the weld. In addition, the uneven stainless steel pipe will also be partially exposed to acid, alkali and other media for a long time, and there is a small amount of rust.

1, due to road construction, vehicle dust, iron powder and other adsorption stainless steel rust, stainless steel welded pipe “with rust”, most not serious, then you can use neutral detergent or soapy water to clean the cloth, directly wipe the rust, and then clean with water, be careful not to leave the liquid on the surface. The eradication of this degree of rust, as long as it is eradicated in time, is simply protective and effective, and the eradication capital is very low. However, if left unchecked, rust spots will soon form a mixture of iron hydroxide, iron oxide, and sulfites, which will become severe brown rust. At this time, ordinary stainless steel cleaning solution or dilution of nitric acid is used to eliminate cleaning. However, some rust will not be eliminated, more or less will form a stupid stainless steel surface, or damage the stainless steel, now use sandpaper or stainless steel brush, grind and wipe, and finally clean with cleaning liquid.

2, the harmful components in the exhaust gas will also lead to rust in the stainless steel pipe, the area of traffic vehicles is rich, the stainless steel surface is easily polluted by the exhaust gas, and sometimes the surface will appear small rust spots. This is mainly caused by harmful components such as automobile, air conditioning exhaust gas or sulfur-containing factory smoke, affecting harmful components such as sulfur-containing smoke emitted by automobile, air conditioning exhaust gas or factory. In the case of relatively light initial contamination, it is possible to use a neutral cleaning agent or soapy water directly for thorough cleaning and cleaning, but in severe cases, the eradication method should be used in the same way as the previous paragraph to eliminate cleanliness. Under normal circumstances, stainless steel in this environment, it is best to hold 2 to 3 comprehensive regular surface cleaning operations a year, at least one regular cleaning.

3, due to salt, corroded stainless steel welded pipes in coastal areas are simply blown by the sea breeze, and 304 stainless steel has red rust in a very short time. In addition, these areas rust faster and are treated in the same way as the previous one. Therefore, when choosing stainless steel external installation in coastal areas, it is best to choose 316 stainless steel with high corrosion resistance. If it is 304 stainless steel for external installation, try to do 3 regular cleaning 4 times a year.

4, adhesion to the corrosion caused by cleaning liquid if you can not use neutral cleaning agent to remove the cleaning agent, you must use cleaning liquid to remove it.

5, rust caused by hand dirt or fingerprints is usually wiped with organic solvents such as sponge, cloth and alcohol. If it cannot be completely eradicated, use a special stainless steel cleaning solution to eradicate it. However, it should be noted that after cleaning using cleaning methods, clean water must be used again.

Corrosion caused by the protective film on the surface of stainless steel welded pipes, usually at this time, use water-soluble neutral cleaners, or wipe directly with alcohol.