Stainless steel plate is a kind of material with strong anti-corrosion ability, so it is very widely used, but when we choose stainless steel plate, if we buy a fake product, the corrosion resistance of the material is also very bad, so what should we do? How about choosing high-quality stainless steel plates? Let's take everyone to take a look. What are the methods to choose stainless steel plate? Stainless steel plate is inseparable in current construction and decoration. Stainless steel plate is a kind of steel plate with good corrosion resistance, so many steel plate manufacturers are now increasing...
Stainless steel plate is a kind of material with strong anti-corrosion ability, so it is very widely used, but when we choose stainless steel plate, if we buy a fake product, the corrosion resistance of the material is also very bad, so what should we do? How about choosing high-quality stainless steel plates? Let's take everyone to take a look.
What are the methods to choose stainless steel plate?
Stainless steel plates are inseparable in current construction and decoration. Stainless steel plates are a kind of steel plate with good corrosion resistance. Therefore, many steel plate manufacturers are increasing the productivity of stainless steel plates, but there are also some illegal vendors. Pursuing interests only ignores the quality of stainless steel plates. Here are several methods for selecting stainless steel plates.
1. Before selecting stainless steel plates, consider the purpose and use environment of stainless steel plates. For example, welded pipes are generally used for decoration, seamless pipes are generally used for fluid transportation, sanitary stainless steel plates are used for medical treatment or kitchen, and thick-walled pipes are used for pressure; generally 200 series materials are used for indoors, and 304 materials are required for outdoor use. Generally, materials above 316 are used in acid-alkaline places or coastal areas.
2. Make sure that the material meets the standards when selecting steel pipes. Take 304 material as an example:
a. From the price analysis, if the 304 stainless steel plate is even lower than the general price of the 301 material on the market, it must be carefully distinguished, it is likely that other materials are fake;
b. Identify whether the steel stamped material "304" is printed on the surface of the tube, and obtain the manufacturer's quality certificate as a voucher;
c. It can be tested with acidic reagents, the material 304 will not change color after 30 seconds, and 201 will turn black;
d. Samples can be drawn for bulk purchase and sent to the national authoritative testing center for component testing.
3. Observe whether the color of the outer surface and the inner wall of the tube is bright and smooth, whether the thickness is uniform or rough. Generally, welded pipes do not need to be inspected, and seamless steel pipes are produced by cold drawn or hot rolled methods. Improper operation during the production process is prone to uneven thickness and cracks on the pipe surface. Rough surface is generally seamless pipe No polishing treatment, if there is no special requirement on the appearance, it will not affect the use.
4. When purchasing, you should choose excellent products evaluated by the Bureau of Quality and Technical Supervision. Long-term use testimony and good reputation among customers are the most direct and effective way to purchase.
5. Internal heavy leather, pitting, and rolling blue lines often appear in rolled pipes. Under normal circumstances, these cannot be avoided and basically do not affect the use. However, you must choose as few as possible when purchasing, especially inspection The inner surface.