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NewsG type tempered glass lids: Which cookware are they suitable for? What should you check when purchasing?
Type:Tempered Glass Lid Knowledge Center Time:2026-09-17
For cookware manufacturers, brands, and importers, selecting a tempered glass lid involves more than just looking at dimensions like "28cm" or "30cm."
The rim structure of the cookware determines whether the lid will fit securely.
The "G-type" tempered glass lid features a classic grooved rim design and is primarily used for cookware with straight-sided rims. It is commonly found on everyday cookware such as two-handled pots, woks, frying pans, deep frying pans, stockpots, and saucepans. Shixing currently produces the G-type as a standalone series of tempered glass lids, offering a wide range of sizes and customization options.
1.Which types of cookware are suitable for G-type tempered glass lids?
The key factor for the G-type is not a specific size, but rather how the rim structure fits the rim of the pot or pan.
For cookware manufacturers, the following product categories are common applications:
- Two-handled pots
Two-handled stockpots, stew pots, and woks typically feature a uniform rim structure, making them ideal candidates for G-type glass lids.
These types of cookware require a lid that sits securely over the opening while ensuring a proper fit between the lid's rim and the cookware body.
- Straight-sided woks
Some straight-sided woks utilize G-type glass lids.
However, it is important to note that not all woks are suitable for the G-type design; factors such as the rim diameter, the angle of the sidewalls, and the shape of the rim edge must be verified.
- Straight-sided frying pans and deep frying pans
Deep frying pans and straight-sided frying pans are also common applications for G-type lids.
For everyday cookware like non-stick pans and die-cast aluminum pots, the G-type's grooved rim creates a stable fit with the corresponding pot opening. Shixing’s official product specifications also describe the G-type as a design suitable for non-stick pans and various types of everyday cookware.
- Stockpots, saucepans, and other straight-sided pots
If the cookware features a standard straight-sided rim, the G-type glass lid is a viable option.
Therefore, during the actual procurement process, rather than asking:
"What kind of cookware fits a G-type lid?"
A more accurate question would be:
"Is the rim structure of my cookware compatible with the G-type rim design?"
This is the crucial factor in determining the right model.
2.What are the characteristics of G-type tempered glass pot lids?
The most distinctive structural feature of the G-type is its grooved rim.
Compared to simple, flat rims, this design places greater emphasis on the fit between the lid and the pot opening; therefore, when selecting a G-type glass lid, one cannot rely solely on the glass diameter.
It is also necessary to verify the following:
- Pot opening dimensions
- Finished lid dimensions
- Rim structure
- Rim material
- Glass thickness
- Shape of the pot rim
Shixing offers G-type products in a variety of sizes; official specifications cover a range of 12–45 cm, and actual dimensions for specific products can be confirmed based on project requirements.
3.What is the difference between G-type and C-type tempered glass pot lids?
If you are developing cookware products, the G-type and C-type series are two types that are easily confused.
Simply put, the main difference between the two lies in the structure of the rim and how they fit onto the cookware.
| Comparison Item | G Type Tempered Glass Lid | C Type Tempered Glass Lid |
| Typical Structure | Grooved rim | Flat rim |
| Key Consideration | Fit between pot rim and grooved rim | Fit between pot rim and flat rim |
| Common Applications | Straight-sided pots, non-stick pans, standard woks, etc. | Stainless steel pots, die-cast aluminum pots, etc. |
| Purchasing Priorities | Pot rim dimensions, edge structure, rim fit | Cookware dimensions and rim fit |
It is important to note here that the C-type rim guard is flat and uniform; it does not feature the downward-protruding "support legs" found on other designs.
Therefore, if a customer has cookware with straight rims, they should not choose between the C-type and G-type guards simply because they "look similar." Instead, the choice should be based on the actual rim profile and the dimensions of the pot opening.
4.How do you confirm the dimensions when sourcing G-type glass lids?
This is the area where issues most frequently arise during actual inquiries.
Customers often say:
"I need a 28cm glass lid."
However, the manufacturer needs to know exactly what that "28cm" refers to.
It is best to confirm the following:
Cookware rim diameter + inner and outer diameters of the finished lid + glass thickness
If the customer already has the original lid, providing a physical sample or a detailed dimension drawing yields more accurate results.
This is especially critical for OEM projects; if only "28cm" is specified without details about the cookware itself, it is difficult for the manufacturer to determine how the G-type rim should fit.
5.How can the rim material for G-type pot lids be selected?
There is no single, fixed configuration for the G-type design.
The rim material can be determined based on product positioning and cost requirements—for example:
- SS201
- SS304
- Or other suitable structural materials
Shixing’s product specifications for the G-type series list options such as SS201, SS304, and other rim materials, and also support customization based on specific project needs.
For bulk orders, it is recommended that clients specify the rim material during the inquiry stage, as it directly impacts both the product cost and the final appearance.
6.The glass thickness also needs to be determined in advance.
Common thickness specifications for G-type tempered glass pot lids include:
3mm, 3.5mm, 4mm, and 5mm.
The specific choice depends on the lid's dimensions, structure, and usage requirements.
If the client already has an existing product, it is best to provide the original sample or specifications; for new development projects, the manufacturer can confirm the appropriate thickness based on the cookware's design.
Shixing’s current product data for G-type lids covers glass thicknesses of 3.0mm, 3.5mm, 4.0mm, and 5.0mm.
7.The steam vent, knob, and logo also need to be checked.
A complete G-type glass pot lid consists of more than just the glass and the rim.
When purchasing, you also need to verify:
| Item | Details to Confirm |
| Glass | Dimensions, thickness, color |
| Rim | SS201, SS304, or other construction |
| Knob | Material, shape, color |
| Steam vent | Presence/absence, location, and design |
| Logo | Screen printing or other marking requirements |
| Packaging | Individual packaging, packing method |
| Quantity | Order quantity per batch, estimated annual purchase volume |
Shixing’s G type products offer a choice regarding the inclusion of a steam vent and provide customization services for glass shape, rim style, logo, and packaging.
8.If you are unsure whether your cookware is suitable for the "G-type" lid:
For buyers, the simplest approach is not to try to determine the model yourself, but to provide the cookware details to the manufacturer for confirmation.
You can provide:
- A photo of the front of the cookware
- A photo of the cookware rim
- The rim diameter
- A photo of the side of the cookware
- A dimension drawing of the cookware
- A sample of the original lid
- The estimated purchase quantity
Especially when developing a G-type glass lid for the first time, photos of the cookware combined with rim dimensions are generally more useful for assessment than simply providing the rim diameter alone.
For OEM projects, it is best to provide actual cookware samples or technical drawings. This allows the manufacturer to verify the suitability of the G-type design based on the actual structure and to finalize specifications for the glass, rim band, and knob.
9.For which procurement projects is the G-type tempered glass lid suitable?
If your product lineup includes:
- Double-handle pots
- Straight-sided woks
- Deep frying pans
- Straight-sided frying pans
- Stockpots
- Saucepans
- Non-stick pans
- Other standard straight-sided cookware
Then the G-type tempered glass lid is a design worth considering.
However, suitability cannot be determined solely by the name of the cookware.
The true deciding factors for the G-type lid are the rim structure of the pot, the dimensions, and the fit between the lid's rim (band) and the pot body.
This is why professional glass lid manufacturers usually request photos, dimensions, samples, and specific usage requirements before providing a quote.
10.From a procurement perspective, consider these points when selecting a G-type glass lid:
If you are looking for a supplier of G-type tempered glass lids, it is recommended to provide at least the following details in your initial inquiry:
Cookware type → Pot rim size → Lid size → Glass thickness → Rim material → Knob → Steam vent → Logo → Packaging → Order quantity.
The more complete the information, the easier it is for the manufacturer to quickly confirm the product structure, thereby minimizing the need for repeated sample revisions later on.
Shixing has been manufacturing tempered glass lids since 1999. We currently offer multiple product series—including C-type, G-type, T-type, and special shapes—and provide customization services for OEM/ODM, logos, packaging, and product structures.
If you need a glass lid for a straight-sided pot, double-handle pot, wok, or frying pan, simply provide photos, dimensions, or a sample of the cookware. We can then determine the appropriate G-type lid specifications based on the cookware's structure.
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