Precision Fit Guide: Cookware Inner Diameter to Glass Lid Reference

To meet the critical demand for precision compatibility from cookware brands, retailers, and manufacturers, the following serves as a universal reference for mainstream cookware inner diameters and suggested glass lid sizes.

Please note: actual production must be based on precise dimensional mapping of specific pot/pan samples (recommended tolerance within ±1mm). 

This chart is intended as a preliminary engineering guide for selection.

Critical Technical Notes:

Measurement Basis: All dimensions refer to the inner rim diameter or side length (the landing surface for the lid), not the outer rim or overall exterior.

Core Tolerance: To ensure seal and safety, the production tolerance between the lid and pot's inner diameter must be strictly controlled within ±1mm, with ±0.5mm 

                                recommended for premium lines.

Beyond Dimensions: True "perfect fit" requires comprehensive consideration of:

Rim Curvature: The pot's rim curvature directly impacts gasket design.

Handle/Knob Position: Must avoid interference with the cookware's own handles during use.

Material Thermal Expansion: Requires calculation of the differential expansion between glass and the stainless steel rim across temperatures.

YingHuade's Engineering Solution:

We understand that a static size chart is only the starting point. As a specialized OEM manufacturer, we provide:

Precision Dimensional Mapping: Generates a millimeter-accurate 3D dimension report based on your physical samples or CAD files.

Compatibility Prototyping: Creates functional prototypes for the first article, conducting real-world seal and thermal shock tests.

Full-Size Series Production: Capable of developing fully compatible tempered safety glass lids for your entire product line, from 14cm milk pans to 36cm professional oval cookware.

Recommended Next Step:

Please send us your specific cookware samples or detailed engineering drawings. We will provide a complete Compatibility Analysis Report and a fitting prototype, transforming "potential fit" into "guaranteed precision".

Note: This chart is a general industry reference and does not substitute formal engineering measurement. All specifications for custom products are subject to the technical drawings mutually confirmed by both parties.