How To Choose A Stainless Steel Single-layer Water Cup?

In addition to the material, there are many issues to be aware of!

First, the material

Stainless steel single-layer cups are generally made of 304 or 316 stainless steel, and there is another type of 201 stainless steel, but because it will not be uniquely marked, few people will know.

The stainless steel thermos cup is made of the inner tank and the outer layer, regardless of the material of the inner tank, the shell is made of 201 material.
Although 201 is very strong, its price will be relatively much cheaper, that is, it will be found to be easy to corrode after a long time, so the surface of the thermos cup we buy will be treated with paint.

As long as we buy a thermos mug and are not greedy for cheap and choose more than 20 pieces of style, the inner tank will not use a cheap 201 inner tank, which does not meet the requirements of edible grade at all.
316 its corrosion resistance will be better, if you often use a thermos cup to brew something, you can choose 316 stainless steel material, but if you usually drink more tea, its corrosiveness is relatively small, and the choice of 304 material is enough to meet the use.

But its hardness is softer than 304, so when you brew fewer other drinks, you don't need to buy a 316 stainless steel cup.

Pay attention to whether there is an L logo on the back of your stainless steel water cup, which indicates the carbon content of stainless steel, and you can also know the corrosion of the welding position.

When purchasing, we should pay special attention to the last small letter, which will directly affect the safety of the material we use.
Second, the process

In the production process of stainless steel single-layer water cup, its inner liner is made into a seamless inner tank, and the welding gap in the thermos cup can generally be seen, but the seamless inner tank is directly made into the shape of a cup inner tank with a steel plate, which is simpler than the welding method.