



Your Trusted Wholesale Custom Stainless Steel Flask Supplier in China
Looking for a reliable wholesale stainless steel manufacturer that provides ODM/OEM services? Look no further, Kreat is your trusted partner. We are a professional supplier in China who supports OEM/ODM services for stainless steel flask wholesale. Our factory is equipped with 5 production lines that can produce up to 10,000+ stainless steel flasks per day. Our stainless steel flask features long-lasting temperature retention, double-layer vacuum insulation, safe-to-touch construction, and secure sealing that can handle extreme and rough usage. Our OEM/ODM services offer custom options for logo printing such as digital printing, silkscreen printing, laser engraving, embossed etc. Surface finishes such as glossy, matte, brushed etc. Surface treatment like powder coating, painting, electroplating, UV etching etc. And even lid design, capacity, packaging and smart features such as health monitoring, hydration reminders, and temperature control. Each of our products undergoes a meticulous quality inspection before, during, and after the production to ensure that our wholesale stainless steel flasks comply with the highest industry standard on quality and safety such as the LFGB, FDA, CE, CIQ, and EEC. At Kreat, our goal is to supply premium quality products that would help drinkware brands, wholesale brands, and start-ups improve their product line and boost their sales and profitability. Send us your ideas and we will deliver.
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Why 1000+ Clients Choose Kreat?
Made of food-grade stainless steel material that are both durable and safe for users.
Crafted with a double-layer vacuum insulation that ensures long-lasting temperature retention and safe-to-touch exterior surface.
Our lids are sealed with inner gaskets that offer maximum security and prevent leaks.
We offer OEM/ODM services and full customization of stainless steel flask, from the design to shape, logo, surface finish, color, and packaging.
Why Choose Kreat As Your Stainless Steel Flask Wholesale Manufacturer?
Consistent Quality – We run numerous tests and inspections on our products to ensure client satisfaction and consistency on our stainless steel fan’s quality.
Efficient Production – Our factory is equipped with robotics and automated machineries and equipment that enables efficient production without compromising on quality.
Flexible MOQ – We offer low MOQ to accommodate the needs of smaller drinkware brands and start-up businesses.
Professional Team – Kreat is composed of professional designers, engineers, and skilled employees that are ready to serve excellent and reliable services.


Production Process and Quality Control
The process starts from turning your idea and concept into a sketch. Then, after confirming the details we proceed to prototyping, giving you 2D/3D/4D design to finalize the details of your custom stainless steel flask. After that, we make samples of your custom designs and send them to you. After the samples are approved, we then proceed to production, processes differ from the custom design you would want for your stainless steel flask but we assure you efficient and 100% precise production with our advanced production system. Our stainless steel flasks go through various inspections and tests from raw materials to finished products. That includes material testing, water leakage test, drop impact test, lid quality test, insulation test etc. To ensure that we provide you only the best quality stainless steel flask in the market.
Our Logo Printing Techniques

Our digital printing uses UV-cured printing and sublimation transfer processes to achieve the rich colors of your logos.

Our silk screen printing is perfect for simple logos with crisp details. Giving excellent adhesion and scratch-resistant logo.

We use a high powered fiber laser so the details of your logo engraving is precise and high quality.

Using customized moulds your logo will be embossed on the surface of your stainless steel flask, giving it a tactile effect and an improved grip.

Our 4D print technology goes beyond the usual 3D print that allows us to print highly intricate details in a short period of time.
Kreat offers professional OEM/ODM services so you can personalize your stainless steel flask wholesale according to your brand identity and vision. Our services include logo printing, surface printing, prototype drawing design, and packaging box.
Kreat’s factory in China is equipped with a professional team, 5 production lines, advanced equipment and robotics, and skilled employees that enables us to produce premium quality products that perfectly represents your brand.
One-Stop Solutions for Custom Stainless Steel Flask Buyers
From raw materials to finished product delivery, we support the efficient launch of your brand with our reliable manufacturing capabilities and flexible customization services.
- Customization Option
- Manufacturing
| Item | Option |
| Material | 304 Stainless Steel / 316 Stainless Steel / SUS 304 / SUS 316 / Pure Stainless Steel |
| Capacity | 8oz / 10oz / 12oz / 14oz / 16oz / 17oz / 18oz / 20oz / 24oz / 25oz / 26oz / 32oz / 40oz / 48oz / 50oz / 60oz / 64oz / 80oz / 100oz / 128oz / Gallon / Customize Capacity |
| Shape | Tumbler / Water Bottle / Travel Mug / Coffee Mug / Kids Bottle / Sports Bottle |
| Structure | Single Wall / Double Wall / Double Insulated / Vacuum Insulated / Triple Wall Insulated / Isothermal Bottle |
| Mouth Size | Standard Mouth / Wide Mouth / Narrow Mouth / Custom Mouth Size |
| Surface Finish | Powder Coating / Spray Painting / Brushed / Polished / Matte / Glossy / Electroplating / UV Coating |
| Color | Pantone Custom Color / Solid Color / Gradient Color / Metallic Color / Neon Color |
| Logo Method | Laser Engraving / Silk Screen Printing / Heat Transfer / Water Transfer Printing / UV Printing / Embossed Logo / Debossed Logo / Etched Logo |
| Graphic Design | Full Wrap Print / Pattern Printing / Minimal Logo / Custom Artwork / Spot Printing |
| Lid Options | Screw Lid / Flip Lid / Straw Lid / Slider Lid / Spout Lid / Leak-proof Lid / Bamboo Lid / Sipper Lid |
| Straw Options | Plastic Straw / Stainless Steel Straw / Silicone Straw / No Straw |
| Bottom Design | Non-slip Silicone Base / Standard Base / Engraved Bottom Mark / Anti-slip Rubber Base / Shockproof Base |
| Accessories | Handle / Carry Loop / Silicone Sleeve / Protective Boot / Tea Infuser / Cleaning Brush / Carabiner / Replacement Lid / Extra Seal Ring |
| Packaging | Poly Bag / White Box / Color Box / Gift Box / Tube Packaging / PDQ Display Box / Eco Packaging / Plastic-free Packaging / Custom Packaging |
| Insulation Performance | 6H / 12H / 24H / 48H / Hot & Cold Retention / Ice Retention Performance / Custom Requirement |
Reviews from Our Clients
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Stainless Steel Flask Wholesale – Your Ultimate FAQs Guide

It’s helpful to understand what makes stainless steel flasks for wholesale unique if you’re considering selling them for your company.
These flasks are well-liked because they are trustworthy, safe, and capable of keeping beverages hot or cold for several hours.
They travel, work, school, and the gym, among other places.
Purchasing them in large quantities is a wise way to save costs and provide your clients with something they will truly utilize and appreciate.
Being aware of the different kinds of sizes, materials, insulation, and current trends is helpful because not all flasks or suppliers are the same.
The key questions regarding stainless steel flasks will be addressed in this guide, which will also assist you in selecting the best suppliers and goods for your company.
What is a stainless steel flask for wholesale?

A stainless steel flask for wholesale is simply a stainless steel flask that you purchase in large quantities for your company.
You order several items at once rather than just one, which lowers the cost of each item.
Depending on the design, these flasks are frequently used for tea, coffee, water, or even warm beverages.
In order to sell it under your own brand, the majority of suppliers also let you alter the packaging, add your own logo, or select different colors.
To put it briefly, companies purchase these sturdy, reusable flasks in bulk for marketing, giveaways, and sales.
What is a stainless steel flask for wholesale made of?
Food-grade stainless steel, typically 304, is used to make stainless steel flasks for wholesale.
This kind of metal doesn’t rust, doesn’t alter the flavor, and is safe to drink.
The exterior and interior walls of most flasks are made of stainless steel.
Typically, the lid is composed of BPA-free plastic and has a silicone ring to keep it sealed and impervious to leaks.
To help keep beverages hot or cold for longer, some flasks also contain an additional layer, such as copper or aluminum.
Ultimately, it’s a combination of silicone, sturdy plastic, and safe metal—made to withstand regular use while maintaining drink freshness.
What type of stainless steel is used for stainless steel flasks?

304 stainless steel, the typical food-grade metal used for drink containers, is used to make the majority of stainless steel flasks.
It keeps your drink tasting normal, is safe, and doesn’t rust.
Because of this, a lot of manufacturers choose it.
316 stainless steel, which is slightly more resistant to corrosion, is used in some high-end flasks.
This kind is frequently utilized for flasks intended for harsh or outdoor environments.
However, 304 stainless steel is the most popular choice in wholesale orders and is more than sufficient for daily use.
How does a stainless steel flask work?
The way a stainless steel flask functions is by maintaining the proper temperature for an extended period of time.
It accomplishes this by using a straightforward concept: two walls made of stainless steel with a vacuum between them.
Hot beverages stay hot and cold beverages stay cold because that vacuum slows down heat transfer.
The lack of air in the middle layer makes it more difficult for heat (or cold) to escape when you pour something inside.
To further enhance insulation, some flasks also include a thin layer of copper.
The lid is also very important. It tightly seals to prevent heat from escaping through the top, which is typically where temperature changes most quickly.
Why do people buy stainless steel flasks?

Stainless steel flasks are purchased by consumers who want something convenient, long-lasting, and safe for everyday use.
You can use a stainless steel flask for water, coffee, tea, or any other beverage without worrying about odd tastes because it doesn’t rust, break, or retain odors.
Additionally, it keeps beverages hot or cold for hours, which is a major factor in why many people favor it over conventional plastic bottles.
Because they are long-lasting, professional-looking, and simple to modify with logos or designs, businesses also like them.
For many users, a stainless steel flask is just a trustworthy tool that they can use at work, school, the gym, or on vacation.
It’s a sensible option for anyone looking for a durable and reusable drink container.
Does a stainless steel flask really not affect the taste of the wine?
As long as the flask is made of high-quality food-grade stainless steel, such as 304, it usually doesn’t alter the flavor of wine.
Your drink retains its original flavor because this type of metal is neutral.
Even in a glass bottle, exposure to air, heat, or prolonged storage can alter its flavor.
Thus, the flask itself is not the issue.
Wine should taste exactly the same if it is poured into a stainless flask and consumed that same day.
Long-term storage of wine in the flask may slightly alter its flavor, but this is not due to the stainless steel but rather to the way wine naturally changes over time.
Can a stainless steel flask be used for different beverages?

Actually, you can use a stainless steel flask for almost any type of beverage.
A good food-grade stainless steel flask won’t alter the flavor of water, coffee, tea, juice, or even wine.
Because they keep warm for hours, people enjoy using them for hot beverages like tea or coffee.
They stay refreshing for a long time and are also excellent for cold beverages like juice or iced water.
The most important thing is to thoroughly clean the flask in between uses, particularly if you’re switching from a strong-flavored beverage like wine or coffee to plain water.
This maintains the freshness of drinks.
All things considered, a stainless steel flask is safe, adaptable, and ideal for transporting nearly any type of beverage.
How long does a stainless steel flask usually retain the drink’s temperature?
Depending on the design and insulation, a good stainless steel flask can typically keep beverages hot or cold for six to twelve hours.
Most use double-wall vacuum insulation, which prolongs the chill of cold drinks and keeps hot drinks warm by slowing down heat transfer.
Some high-end flasks can even keep beverages cold for an entire day or hot for up to 24 hours.
How full the flask is, the outside temperature, and how frequently you open the lid all affect how long it lasts.
Generally speaking, if you want your water, tea, or coffee to remain at the proper temperature throughout the day, a well-made stainless steel flask is ideal.
How durable is a stainless steel flask?

In general, a stainless steel flask is incredibly robust and long-lasting.
It can withstand everyday use, travel, and even the odd bump or drop without breaking because it is constructed of sturdy, food-grade stainless steel.
It is not easily broken or cracked like cheap plastic or glass.
A well-made flask can keep drinks safe for years because the lid and seals are typically made to last as well.
Naturally, using it roughly or dropping it on a hard surface can result in dents, but even in those cases, it usually still functions properly.
All things considered, a stainless steel flask is made to endure frequent use, making it a sensible and dependable option for anyone looking for a flask they can rely on on a daily basis.
How can I ensure that my manufacturer uses a safe material for my stainless steel flask?
Asking for certifications is the first step in ensuring that your manufacturer uses safe materials for your stainless steel flask.
Look for things like FDA or LFGB approvals, which attest to the material’s safety for beverages, and food-grade stainless steel (304 or 316).
To verify the quality for yourself, ask for samples.
Examine the flask for any unusual discolorations, coatings, or odors that could point to dangerous materials.
Additionally, directly question the manufacturer about the materials used for the body, lid, and seals.
Clear responses and even test reports should be provided by a trustworthy manufacturer.
You can be sure that your flasks are sturdy, safe, and prepared for consumers by following these procedures.
What are the different types of stainless steel flasks for wholesale?

Businesses typically purchase a few primary types of stainless steel flasks for wholesale.
The most popular are traditional flasks, which are sleek, thin, and portable and are frequently used for alcohol or small drinks.
Then there are double-walled, vacuum-sealed insulated flasks that can keep beverages hot or cold for hours.
These are widely used for juices, coffee, tea, and water.
Sports or travel flasks are also available; these typically feature a wider mouth, a spill-proof lid, and occasionally a handle or straw for convenient on-the-go drinking.
Lastly, you can add designs, colors, or logos to some flasks.
Since each type has a distinct function, companies can select the one that best suits their target clientele.
What are the latest design trends for stainless steel flasks?
Here are some current trends if you sell stainless steel flasks.
Eco-friendly flasks made of recycled stainless steel are popular.
Styles and colors are very important.
Bright or bold colors make flasks stand out, while matte, metallic, soft pastels, and straightforward sleek designs look contemporary.
Additionally, people desire smart features.
There is a demand for lids with dual openings, built-in filters, or leak-proof features.
Flasks are more practical when they have large mouths for ice or fruit infusers.
Brushed steel, sturdy construction, and simple shapes that look good everywhere are examples of premium designs that are also well-liked.
Personalized choices like engraving or logos are also popular.
In general, consumers seek out flasks that are fashionable, useful, eco-friendly, and customizable.
It is most effective to provide a combination of basic, high-end, and feature-rich options.
What are the insulation designs for stainless steel flasks?

The double-wall vacuum insulation found in the majority of stainless steel flasks keeps beverages hot or cold for hours.
They have a tiny vacuum between two stainless steel walls that prevents heat from escaping.
To maintain the temperature even longer, some even have a glossy inner layer. Regardless of what’s inside, the exterior remains safe to touch.
Additionally, flasks with a single layer of stainless steel are known as single-wall flasks.
Drinks won’t stay hot or cold for very long, but they are lighter and less expensive.
These are ideal for quick drinks or short trips.
In other words, single-wall flasks are acceptable if insulation is not required, but double-wall vacuum flasks are ideal for maintaining drinks at the proper temperature.
What is the usual capacity and size of a stainless steel flask for wholesale?
The majority of stainless steel flasks that are sold in large quantities have portable sizes.
250, 350, 500, and 750 milliliters are the typical capacities.
While larger flasks are better for coffee, tea, or water on longer trips, smaller flasks are ideal for kids or quick drinks.
They typically fit into small bags, cup holders, and backpacks due to their thin, cylindrical shape.
If they possess extra features such as infusers or unique lids, some might be slightly wider.
When selecting flasks for your company, consider the size—small, medium, or large—that your clients will utilize.
How long does the production time of a stainless steel flask for wholesale usually take?

Your order will determine how long it takes to produce stainless steel flasks.
Making standard flasks typically takes two to four weeks.
Custom designs, such as logos, colors, or unique lids, can take four to six weeks to complete because the manufacturer requires additional time for quality control and customization.
The timeline may also be impacted by other factors, such as the factory’s level of activity or the need for special materials.
In other words, custom flasks take a little longer to obtain than simple flasks, so it’s best to prepare ahead of time.
How can I find a trusted supplier of stainless steel flasks for wholesale?

The key to locating a reliable source for stainless steel flasks is thorough inspection.
Start by looking for manufacturers online.
To ensure that the flasks are safe for drinking, make sure they are made of food-grade stainless steel and have safety certifications such as FDA or LFGB.
Always start by requesting samples.
Check the flask’s overall feel, insulation, and lid by giving it a test.
Seek out vendors who communicate clearly, deliver on schedule, and have positive reviews or references.
To verify quality, if at all possible, request a visit to the factory or documentation.

























