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How to choose SUS304 sink of high quality?

The characteristics about the sink

Sink material classification

Generally, the water tanks made by regular manufacturers are made of 304 stainless steel. The manufacturing technology of 300 series stainless steel is very mature. It has good corrosion resistance, heat resistance and mechanical properties. It is very suitable for stamping and bending. It is a real medical food grade. material. The low-grade water tanks made by some manufacturers using 200 series stainless steel materials are much worse in texture. Because the material processing performance is poor, the depth of the produced water tank is not enough, the overall processing precision and strength of the water tank are not enough, and the flatness of the water tank countertop is not enough. The downward pressure after the water is filled causes the trough to be deformed, and the corrosion resistance is also much worse, and manganese precipitation is also one of the potential risks. To know whether it is a real 304 stainless steel material is very simple, the first look at the logo, according to the national standard on the table must be marked with the standard number of stainless steel materials, except for SUS304 other than 304 #, DVS304, S304, do not look fake, manufacturers I am afraid that I will not be confused if I assume responsibility. It is worth noting that if the 304DDQ sink is marked with a special stainless steel grade that is more suitable for stretching, it is not a counterfeit product. The second purchase of a special reagent can be easily identified.
In terms of the thickness of the stainless steel, the thickness of the generally high-quality water tank is between 0.8 and 1.2 mm. It is too thin to make the depth of the one-piece stretching insufficient, and it is easy to break; too thick to be processed, and lacks elasticity, the bowl 砸It is easy to break off on it. However, this thickness is actually very particular. For a one-piece stretched sink, many of the thicknesses indicated as 1.0MM actually do not reach this thickness in some parts, such as the bottom after stretching, about 0.5MM. . Some of the poorer manufacturers use steel coils with a thickness of only 0.6, which may be only 0.3 after stretching. So the unspoken rule of this line is to show only the thickness of the raw steel coil. This thickness can meet the requirements of the QBT4013-2010 domestic stainless steel sink national standard for the concentrated load at the bottom of the tank 100KG, the deformation is less than 3MM, in fact, this standard is actually not high, the new national standard is being developed, the leader unit is Ou Lin, the deputy leader unit is Prometheus. For the thickness to bring only the sensory experience is different, in actual use, as long as more than 0.8MM can be used with confidence. Go to the physical store to know the thickness of the stainless steel, you can press the bottom of the sink by hand, you can easily press it to be lower than 0.8MM, and it is generally no problem to press the fixed or not easy to press.

Classification of the combination of sinks.

The water tanks can be divided into the following categories according to the combination: single tanks, single tanks are currently a very popular style, which can be divided into large single tanks and small single tanks. The size of the large single-slot opening can reach 850mm or so. This kind of sink is very practical and can be directly washed into the sink. It is currently the most common in Japan and Japan, especially in Japan, because Japanese house decoration is usually done by the house contractor. To complete, so the design is very similar, most of them are used by Panasonic, Takara and other brands. South Korea is basically completely “learned” from Japanese design, such as the white bird’s single slot and Panasonic’s basically the same. The domestic single-slot design also absorbs the excellent ideas of many Japanese sinks, but the function is closer to the national conditions and usage habits, but there are still some differences in manufacturing technology. The small single slot has a common opening size of about 650mm, which is very suitable for families with small kitchen area. The double slot of this size is too crowded, and the single slot is just right. At present, the sink is not used too much, and there are conditions. It is better to try to choose large single tanks and double tanks and multiple tanks. The disadvantage of the single tank is that there is no function of soaking the individual fruits and vegetables. Although it is very inconvenient to use, I think it can be solved by purchasing a pot of vegetables separately, which needs to be determined according to the actual use of the vegetables. Double slot, which is the most common style in the domestic and European and American markets. The double-slot design allows cleaning and soaking at the same time without disturbing. This has the advantage of being able to be dirty and clean, and it is easy to clean the sink. There is a design that is the same size of two sinks. I don’t recommend this design personally, because in a limited space, you should try to do the usual cleaning sink to accommodate at least one wok, if you make it as big as two pots. It is very likely that you can’t put too much stuff. Therefore, when choosing, try to choose a double-slot design with a large sink. Multi-slot, this is actually a small sink based on the double-slot, which can be used to put garbage and can also be used to soak some small beans. This design is also very practical.

Those questions about the sink

  • Stainless steel sink will also rust? Yes, stainless steel sinks may also rust, but the rust should be viewed in two ways: the first is surface rust, which may be caused by rust stains on the surface of the pipe. It may be rust caused by some acidic substances in the air or poured into the water tank, or it may be caused by not being completely cleaned during the production process. This type of situation is most likely to occur during home renovations, as large amounts of cleaning agents or other materials in the decoration process can easily cause rust. In this case, don’t worry too much, just wipe it off with toothpaste, talcum powder or brushed cloth. The second is internal corrosion, which is a quality issue. If you can wipe off with the above tools, this is not the case. If you find that there are still rust spots in the interior, it must be caused by the material and surface treatment process. It is necessary to negotiate with the merchant after sale. At present, most of the rust has nothing to do with quality problems. It has appeared in major brands at home and abroad, so it needs to be treated rationally.
  • Stainless steel sinks also need maintenance? Yes, the best way to maintain is to use it regularly. Do not use detergent to clean the surface of the sink every time you wash the bowl. The proper distribution of oil and fat in the sink will help to maintain the surface of the sink. You can choose more than two days or It is cleaned with detergent when it is particularly dirty and has a lot of oil. Usually, just use a dishwashing brush to clean the sink and clean it. This is also the reason why many sinks come with special oils, mainly to prevent various problems that occur when the surface is not used for a long time.
  • Can the water be poured directly into the sink? Can the soup be poured into the sink? These two problems are often encountered in daily life. Generally speaking, the quality water tank can withstand the temperature of 100 degrees boiling water/hot soup, but in order to avoid deformation of the pipeline and damage of sealing materials, I suggest that A small trick is to open the faucet cold water pipe to the maximum, and wash the hot water mixed cold water, which can significantly improve the life of the water pipe. The second question is whether the soup can be poured into the sink. My personal opinion is to avoid it. Because there are inevitably lice in the soup, such as animal bones, it is easy to get stuck in the water trap and the sewer trap. Among them, over time, it is easy to catch other residues to form a blockage, and it is easy to cause odor. Therefore, my suggestion is to filter the slag and pour it into the sink or toilet.
  • The magnet can identify whether the sink is 304 stainless steel? In fact, this is not entirely correct. This is also a very imprecise test method. According to the theory, there is no magnetic property after adding chromium and nickel to form austenite structure, but 304 stainless steel is an alloy, it is likely to be mixed with other components, and a small amount of martensite and ferrite may be generated in the smelting process. It is also very likely to carry trace amounts of magnetism. In addition, the processing of the water tank, such as bending and stamping processes, may also cause the transformation of the structure to martensite, so it is also likely to be magnetic. It is often the case that the same material is processed into different parts and the magnetism is quite different. However, it can be confirmed that 304 stainless steel does not have strong magnetism. If you want to identify a reagent that can be used to identify stainless steel, the result is more accurate.

A simple and easy way to choose

Step 1: Learn about features and sizes. Familiar with the various functions of the sink, such as whether there is a knife holder, whether there is a water filter basket, whether there is a spill-proof mouth, etc. For the size of the sink, the functional distinction, and whether it matches the home kitchen renovation. Look at the water separator is the way to fall into the water, thickness and weight and surface treatment is up to standard.

Step 2: Touch the surface of the sink to judge the surface treatment process. Generally, the formal brand can be used safely regardless of the processing technology. The difference lies in the beauty, the hand feeling, the better durability, the price and the positioning.

Step 4: Press the bottom of the sink to see if it is prone to deformation. It usually doesn’t matter if it is slightly deformed, but it is easy to press it and you need to pay attention. This step can be used to easily determine whether the thickness of the sink is up to standard.

Step 5: Observe whether the sink has the mark of SUS304. Some brands are hidden in the position of the sink. Some brands will also have the SUS304 mark on the water purifier.

Step 6: Open the door to see if it has anti-condensation coating and silencer pad design. Use your fingernail to press it quietly to see if it is elastic. Generally speaking, it is better to spray a product with a uniform thickness.

Step 7: Observe whether the table top of the sink and the basin have weld stitching marks from the bottom and judge the molding process. The manual sink sees whether the weld at the joint of the basin is obvious from the inside and the outside, and whether the joint is smooth and flat.

Step 8: Observe whether the function of the lower water pipe is complete. Check the specification of the pipe fittings to determine whether the specifications are up to standard and see if the surface of the pipe fittings is smooth. If there is a separate downpipe display that can be picked up to see how the weight is, what is the quality of the gasket film at the interface.

Step 9: Choose a satisfactory product and consider the brand, price, function and other factors to decide to purchase.