Why does the stainless steel water cup appear out of round?

I remember writing a similar article a long time ago.However, when I visited a customer recently, I met a young lady from the client company who asked the editor why some of the gift water cups she purchased were not round to the touch (these water cups were not produced by the editor's factory).Let the editor help to answer whether these water cups are all defective products and can't be sold on the market?

Today, Editor takes this opportunity to share with you the content of this aspect. To talk about this issue in detail, we will talk about it from two aspects.First of all, the editor will answer the question asked by the young lady whether it is a defective product and cannot be sold on the market.

Each factory that produces drinking glasses has its own acceptance criteria, but most of these criteria are based on national standards.Taking the national standard as an example, if it is a stainless steel insulated water cup, these situations cannot be shipped and sold as a good-quality water cup.Water leakage, water leakage is a serious problem, no matter where the water leaks from, it is not allowed;

No heat preservation, no heat preservation is a serious quality problem, and the non-insulated water cups detected before leaving the factory cannot be shipped as good products;Damaged or missing accessories are also serious quality problems and cannot be shipped as good products;Serious deformation of the product, such as obvious pits, creases, etc., is also a serious quality problem and cannot be shipped from the factory.

If you look at it this way, it is not clearly marked in the national standard that the cup cannot be sold if it is out of round.It is stipulated in the national standard that some minor flaws can be shipped and sold as qualified products if they do not affect the normal use of the water cup.For example, there are slight scratches on the surface of the water cup, clutter on the surface of the jug, slight scratches on the inside of the liner of the jug, slight drape on the plastic cup lid, slightly less paint color, a small amount of clutter in the printed pattern and slight deformation of the cup.These are allowed to leave the factory as qualified products without affecting the normal use of the water cup.

Well, through the above text of the editor, you should know what kind of water cup is unqualified and what kind of water cup is qualified.Therefore, the out-of-round water cup can be listed as a qualified water cup without affecting the overall structure and use.

So why does the stainless steel water cup appear out of round? If you want to fully understand the reason why the cup is out of round, you need to talk about the production process of the cup in detail.However, due to being too professional and a lot of craftsmanship, even if the editor talks about it, my friends are probably completely confused, so the editor will simplify it and try to explain it in a popular way.The water cup is made of stainless steel pipe and has to go through many production links.

In the production process, although there will be a shaping process to correct the problem of the cup being out of round, but in other subsequent processes, the cup will be out of round, such as the rolling process of the cup mouth thread, such as the vacuuming process.The reason for this is partly due to lax production management and partly due to the thickness of the material itself. Usually, the thinner the tube wall, the greater the possibility of being out of round.However, from the experience of Editor for so many years, the reason why the cups are out of round on the market is the polishing process. The relative proportion of out-of-roundness will be much smaller.

Dongguan Zhanyi Commodity Technology Co., Ltd. specializes in the production of metal cups, plastic cups, coffee cups, suction mug, lunch boxes, food jar, travel mugs, portable water bottles, sports bottles, home life desktop trash cans, thermos bottles, etc.These products are all our annual exports, and are recognized and loved by the US, Europe, Australia, Japan, South Korea, Taiwan, Hong Kong and other consumers. Support for small quantity order, fast customization.