First, what material stainless steel pipes are currently on the market, and what are the differences in their quality?
At present, there are mainly 304, 201, and 301 materials on the market. The difference is mainly due to the different contents of chromium and nickel. Material 304 contains 18 chromium and 8-9 nickel, while materials 201 and 301 only contain 14 and 16 chromium and 1 and 5 nickel respectively. It has been scientifically proven that stainless steel pipes with high chromium and nickel content and good smelting technology have better performance, stronger corrosion resistance, and stronger finish durability.
Second, why are the prices of 201 and 301 lower than those of 304? Beware of fake “304″.
Because the material contains low chromium and nickel, the price of purchasing raw materials is cheap. For example, 999 pure gold is the same as 18K gold, and the price is different with different gold content. Therefore, the prices of 201 and 301 are low. Some unscrupulous manufacturers use material 201 and 301 steel pipes are also engraved with “304″.
Third, why are there differences in the quality and price of 304 pipes of the same material?
At present, the raw materials are imported and produced by large and small domestic manufacturers. Although they are all made of 304, each manufacturer has different smelting technology, various chemical element content indicators, different quality, and a price difference of about 10%. Moreover, there are quality differences in the manufacturing process of each pipe factory, and the performance and corrosion resistance after use are also strong or weak. Even if the poor quality does not rust shortly, it will turn gray, yellow, or even rust after a long time. In the face of the uneven and complicated stainless steel market and the century-old plan related to the decoration of houses and buildings, you have to make a wise choice. Here, I would like to remind users in the coastal areas not to be greedy for petty gains, so as not to regret it.
Fourth, how to choose high-quality stainless steel pipe?
1. Identify whether the stamped material “304″ is stamped on the pipe surface, and ask for the manufacturer’s quality certificate and quality assurance certificate.
2. Test with an acidic reagent. After 30 seconds, material 304 does not change color, and material 201 turns black.
3. Check whether the color of the outer surface and the inner wall of the tube is bright and smooth and whether the thickness is uniform or rough.
4. When purchasing, you should choose famous brand products above the provincial level that have been evaluated by the Bureau of Quality and Technical Supervision. Long-term use testimony and a good reputation among customers are the most direct and effective ways to purchase.
Fifth, how to use and maintain stainless steel pipes correctly to ensure that the products are bright and clean?
1. During the welding process, avoid cutting iron filing sparks and avoid friction with ironware.
2. Be careful of cement, lime, oil residue, and other debris pollution, and avoid contact with acidic substances.
3. Clean with Shuangfei powder or cloth, avoid using sewage and detergent.
Post time: Jun-16-2023