How to identify the 304 stainless steel decorative tube to buy stainless steel matters needing attention

2020-07-29

Now the types and models of stainless steel pipe more and more, the quality is better than commonly used to 304 stainless steel. So today small make up to introduce to you the relevant content is 304 stainless steel decorative tube how to identify the true and false and buy stainless steel have what precautions.

One, 304 stainless steel decorative pipe how to identify the true or false

1. Use magnets for identification

General ordinary steel its magnetism is very strong, while 304 stainless steel magnetism is very weak or even no, so when the same magnet is close to ordinary steel and 304 stainless steel, you can obviously feel the difference in the magnetic attraction between the two.

2, special steel inspection potion

General this kind of liquid medicine in hardware stores are available to buy, so the supply problem can not worry, 304 stainless steel, really in the drop of liquid medicine go up, 3 to 5 seconds is not color-changing, and the other just, in the drop of liquid medicine go up will instantly become other colors.

Two, buy 304 stainless steel decorative pipe matters needing attention

1. Pay attention to whether the specifications are complete

Because stainless steel is a large number of wholesale, and need to wholesale a variety of specifications and models, so when the wholesale purchase, must first ask the manufacturer, whether the product specifications and models are complete, so as not to appear a series of follow-up problems because of the lack of specifications.

2. Whether zero cutting is provided (whether there are burrs after cutting)

Because each kind of stainless steel policy is different, so before purchasing, we should first understand whether the manufacturer will provide zero cutting and external polishing processing, which can save a lot of costs.

3. Whether the positive and negative tolerances are too large

In order to guarantee the external appearance of stainless steel, ask the manufacturer of steel pipe raw material have been cut handling, only see observation have too much scratching and scratches, but also pay attention to the stainless steel industrial pipe will plus or minus tolerance is too big, because each of the steel material is qualitative different, so the positive and negative tolerance range is also different, usually the smaller the better quality stainless steel industrial pipe tolerance.

4, pay attention to the price (manufacturers direct best)

Because the metal material price fluctuation is very frequent, so before the purchase of stainless steel, it is best to understand the recent market price is how much, and then according to the market fluctuations to judge whether the price given by the business is reasonable.