The Best Stainless Steel Tumblers Manufacture
Borge drinkware was founded in 2015. In past 2 years,we achieved many great developments, like vacuum furnace, dust-free workshops and so on. Today, we have more than 150 workers and OEM for some famous brands. In 2018, we built a new effective Quality Management System and foreign trade team in order to bring our products and company to a higher stage.
why choose us
Our Products
We offer a variety of high-quality items, including stainless steel vacuum flasks, thermos food jars, stainless steel sports water bottles, plastic water bottles, glass water bottles, coffee pots, wine tumblers, coffee mugs, and silicone foldable water bottles.
Product Application
Our products provide unique solutions for keeping food and beverages hot, cold, and fresh. With these items, consumers can enjoy their favorite drinks and meals at home, work, or while on the go.
Certifications
Our products are certified for safety and quality. We hold FDA, LFGB, CE, and SGS certifications, and all items are BPA-free.
Production Market
We export our products to various regions, including North America, Europe, South Korea, Japan, Southeast Asia, Oceania, and South America. We have built a strong reputation in these markets.

Unlike plastic or glass cups, stainless steel cups are built to last. They are resistant to dents, scratches, and breakage, making them ideal for both indoor and outdoor use. This durability ensures that your investment in a stainless steel cup will provide long-term value.
They are unbreakable
Unlike ceramic and plastic mugs, stainless steel tumblers can withstand the fall without breaking. It means you can use them for a long time, and their resilience makes them the preferred choice of many people. Stainless steel offers long-lasting value and does not develop an unpleasant odor with extended use.
Recyclable and good for the environment
It has resulted in large amounts of plastic waste. The good news is that more and more people are considering reusable stainless steel as an alternative to plastic bottles.
Carry Hot or Cold Liquids
Stainless steel vacuum-based tumblers are highly useful to maintain the temperature of your beverages for extended hours. On the other hand, traditional tumblers quickly lose heat or allow cold drinks to warm up, but insulated tumblers keep the drinks hot or cold for hours.
Corrosion and rust-resistant
The composition of the steel is the most significant factor affecting its resistance to corrosion. The elements present in various grades of stainless steel can have a negative impact on their corrosion resistance.
Preserve the taste
One of the standout features of stainless-steel tumblers is their ability to preserve the taste of what is inside if you have used them to contain various beverages like tea or perhaps a refreshing smoothie at some point in time.
Effortless cleaning and Maintenance
Stainless steel is an ideal material for dishwashing as it does not react to chemical reactions caused by detergents and soaps.
Can be Reused indefinitely
One of the crucial considerations of choosing stainless steel is its constant effectiveness, and it is worth every penny. Investment in stainless-steel tumblers offers long-term value compared to its alternatives. Instead of continuously buying disposable cups or bottles, choosing a set of stainless-steel glasses is a sustainable option that can result in significant long-term savings.
Stainless steel cups have gained popularity as a safer alternative to traditional drinkware options. Thoughtfully designed, these vessels offer a range of benefits that make them a compelling choice for those seeking a more responsible and sustainable way to enjoy their beverages.
One of the primary advantages of stainless steel cups is their durability. Unlike fragile glass or plastic containers, stainless steel is incredibly resilient, able to withstand the rigors of daily use without compromising its structural integrity. This makes them an ideal choice for active lifestyles, outdoor adventures, and households with young children, where the risk of breakage is a constant concern.
Stainless steel is inherently non-toxic, free from the harmful chemicals often found in plastic or ceramic drinkware. This provides peace of mind, especially when consuming hot or acidic liquids, as there is no risk of harmful substances leaching into the contents. By opting for stainless steel, individuals can enjoy their favorite drinks without worrying about potential health implications.
Stainless steel cups also offer superior insulation properties, keeping beverages at their desired temperature for longer periods. This not only enhances the drinking experience but also reduces the need for single-use cups or containers, contributing to a more sustainable lifestyle.
As consumers become increasingly mindful of their environmental impact, the appeal of stainless steel cups as a safer and more responsible choice continues to grow. By making this simple switch, individuals can make a positive difference while enjoying the practical and health-conscious benefits of this versatile drinkware option.
Stainless Steel Grade Chart
|
GRADE |
STRENGTH |
CORROSION |
NOTES |
|
200 Series |
GOOD |
POOR |
Not as resistant to corrosion and seen in lower quality (and lower cost) stainless steel drinkware. |
|
304 |
BEST |
GOOD |
Higher quality stainless steel drinkware. Also known as 18/8 (18% chromium and 8% nickel). Good corrosion resistance due to the nickel. Most common. |
|
316 |
GOOD |
BEST |
Best for extreme environments such as marine use. Rarely seen for drinkware. |
Basically, cheap stainless steel tumblers and water bottles are most likely made out of a 200 grade stainless steel, while most higher quality stainless steel drinkware will be made out of a 304 grade stainless steel.
18/8 gauge is used interchangeably with “304 grade” or “300 grade” or “food grade.” It’s all the same and very high quality. This is the most popular grade of stainless steel used with vacuum insulated tumblers and water bottles. The big brand name tumblers and bottles use the exact same stainless steel grade as the off-brand and promotional options.
You get what you pay for, so if you want it to last, get the 304 grade (18/8) stainless steel and skip any drinkware made out of 200 series stainless steel. Chances are, if the type of stainless steel used to manufacture the tumbler of bottle isn’t listed in the description, it’s probably NOT the good kind (300 series).
While the quality of the stainless steel is one factor determining the effectiveness of heat and cold retention, another major factor is the type of insulation used. Vacuum insulation and copper vacuum insulation are hands down the best two options. You can read about what vacuum insulation means here.
Can Stainless Steel Cups Make Tea
Chromium is a toxic heavy metal, so we come to the conclusion that it is not toxic to make tea with stainless steel cups. This conclusion caused a great disturbance for a time. So what is the truth.
Stainless steel also rusts. The name "stainless steel" naturally makes people think that this kind of steel will not rust, but in fact, stainless steel is not rust-free, it is relatively not easy to rust.
The corrosion resistance of stainless steel mainly depends on the content of chromium. When the content of chromium in stainless steel reaches 12%, in atmosphere or oxidation environment, chromium can spontaneously form a thin passivation film to prevent further oxidation and corrosion, so it will not rust in daily use. However, corrosion may occur when acid, alkali, salt (alkaline matter has relatively weak influence on stainless steel) or passive film is destroyed.
That is to say, to corrode stainless steel, it takes a long time for strong corrosion conditions to produce visible corrosion results. Tea water is nearly neutral, and its ionic strength is very low. It is almost non-corrosive, and it is impossible to cause visible corrosion in tens of hours.
In food production, a large number of equipment are stainless steel, with higher acidity and longer time. If the naked eye can see the corrosion of tea brewing in tens of hours, those equipment will be replaced soon. The "corrosion" in the above tests is most likely to be the deposit of tea dirt on the cup.
Chromium does exist in stainless steel, and it is theoretically possible for chromium to migrate into water. However, stainless steel for catering containers has national standards, which specify the amount of migration under specific conditions.
Considering the health risks of chromium (especially hexavalent chromium compounds), the migration of chromium in stainless steel utensils has been strictly regulated all over the world. According to the relevant national standards in China, the chromium migration of stainless steel vessels should not exceed 0.4 mg/m2, and the measurement method of this migration is boiling for 30 minutes in 4% acetic acid solution and then soaking for 24 hours. The pH value of 4% acetic acid solution is about 2.5. After boiling a piece of stainless steel for 30 minutes and soaking for 24 hours, the migration of chromium on the surface of each square decimeter should not exceed 0.4 mg.
Unlike acetic acid solution, tea water has very weak acidity (the pH of tea water varies according to the type and concentration, usually between 5 and 7), and has much less corrosive effect on stainless steel. Assuming that tea with a pH of 5.5 is used for such immersion experiments, it takes about 246 hours to migrate 0.4 mg of chromium, i.e. 10 consecutive days to immerse, which can only be achieved if there is no passivation film on the surface of stainless steel and the reaction takes place all the time.
Tea will not boil in stainless steel cups for 30 minutes, and considering the factors of passivation film, the actual reaction rate will be slower. As long as the stainless steel cup you use is a standard product, don't put a cup of tea too long (if you really put the tea on for several days, mildew is probably the first thing to worry about), there is no need to worry about the migration of chromium elements beyond the standard.
Food is such a complex system that it is perfectly normal to detect "harmful ingredients" with more and more advanced detection technology nowadays. But there's the same sentence: "It's hooliganism to talk about toxicity without dosage."
What are the misunderstandings when buying stainless steel thermos cups




Ignore the heat conduction of the cup body:
The cup body of the stainless steel thermos cup adopts double-layer stainless steel vacuum technology, so it can keep heat and cold. However, since the cup lid of the water cup is usually not made into a double-layer stainless steel vacuum structure, the principle of heat rising, so after pouring boiling water into the thermos cup, the connection between the cup mouth and the white cover will usually be very hot. Some consumers like thermos cups with large mouths, small capacity, and short cup bodies.Such water cups are convenient to carry and also convenient for receiving water and drinking water. When holding such water cups, it is very likely to touch the cup mouth and get burned. Therefore, everyone should pay attention to whether the cup body design takes heat conduction into consideration to ensure comfort.
Blindly pursuing hot items:
Blindly pursuing hot items is not just in the water cup industry, there are such consumers in many industries.Some of the consumers who like to buy water cups like novel and trendy water cups, but usually such water cups are expensive, and novel water cups emerge in an endless stream. Friends with this consumption habit will find one day that they have hoarded a large number of water cups without realizing it, and they feel a pity to throw them away, but they really take up space.
Ignoring after-sales service and brand reputation:
Some consumers always believe that low price is the basis of high cost performance, so they also buy low-priced thermos cups. However, many low-priced thermos cups may be backlog products or inferior and shoddy water cups.Some consumers buy them and they no longer keep heat or are damaged after using them for a short time. They can be returned or exchanged but cannot be replaced. However, some water cup brands with good reputation not only have stable product quality, but also provide guaranteed after-sales service. Although the unit price of the product is relatively high, the price of buying a few low-priced products a year is almost the same as that of branded products.
Ignoring the safety of spray materials:
Since consumers do not understand the safety performance of the paint used for spraying water cups, they believe that as long as it is sprayed on water cups and sold on the market, such spray materials should be safe. In fact, this is not the case. Both industry regulatory agencies and market management agencies lack supervision and inspection on this point.
Mistakenly believe that the heavier the weight, the better the thermal insulation effect:
The thermal insulation effect mainly depends on the internal insulation layer and sealing performance, and weight is not a decisive factor.
Misconceptions about the materials used in cup lids:
Some consumers, especially those in overseas markets, prefer to buy stainless steel thermos cups with both the lid and the body made of stainless steel, and resist thermos cups with lids made of plastic.
As one of the best professional companies, BORGE has focused on the manufacture of drinkware for 8 years. Our company has rich experience in ODM&OEM orders and a creative design team. Based on our excellent quality and service, our company has long-term partnerships with many famous enterprises and the products spreading all over the world.

FAQ
Find professional stainless steel tumblers manufacturers and suppliers in China here! If you're going to buy high quality stainless steel tumblers, welcome to get more information from our factory.
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