A 211 beer can bottom end is generally described by a nominal diameter code of 2 11/16 inches, or approximately 68.3 mm. That designation is a useful starting point, not proof that an end will fit a particular can body or seaming setup. To confirm compatibility, buyers should match the end profile and dimensions to the can maker’s specification, then validate the combination with the intended seaming equipment and production process.
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One point matters before requesting a quote: many standard two-piece beverage cans have a bottom formed as part of the can body, rather than a separate bottom end. A separate end at the base may apply to a different can construction or a specialized application. This guide explains what to verify, what information to provide a supplier, and how to reduce sourcing risk.
This guide is intended for beverage-can manufacturers, breweries, packaging buyers, importers, and distributors evaluating a 211-size end for beer packaging. It is especially useful when replacing a component, qualifying a new source, or confirming whether a nominal size code matches an existing line. It is not a substitute for a drawing review or production validation.
In common can-industry notation, the first number indicates inches and the following digits represent sixteenths of an inch. On that basis, 211 refers to 2 11/16 inches; converting using 25.4 mm per inch gives approximately 68.3 mm. Treat this as a nominal diameter reference, rather than a complete manufacturing specification.
Suppliers may use product-specific codes or drawing conventions, so confirm how “211” is applied to the item you are sourcing. A nominal diameter does not establish the end’s curl, countersink, panel profile, compound, thickness, or seam dimensions. Those details can affect whether the part matches the can body and seamer.
Many two-piece beverage cans are made by forming the body and base from one piece of metal, with a separate end seamed onto the open top. In that construction, the base is not a separately purchased bottom end. If a project calls for a separate closure at the bottom, provide a drawing or a sample so the supplier can identify the construction before recommending a component.
This distinction helps prevent a basic sourcing mismatch. It also clarifies whether the required part is a can end, a formed can body, or another closure component. When terminology differs between teams or markets, a photo and dimensioned drawing are more useful than the name alone.
Start with the nominal diameter, then check the detailed dimensions on the approved drawing. Relevant details may include the end’s outside diameter, curl, countersink depth, panel geometry, and the dimensions that form the double seam. Use the specification for the actual can body and seamer, rather than assuming that two parts with the same nominal code are interchangeable.
Ask the supplier to state the substrate, material thickness, internal and external coating details, and sealing-compound specification where applicable. These choices should suit the product, filling conditions, storage environment, and packaging requirements. Do not assume that material or coating options are equivalent across suppliers without reviewing the technical documentation and intended use.
The end must be compatible with the can body and the seaming operation used at the filling or manufacturing site. Confirm the applicable seam requirements and make sure the intended seamer tooling and setup can accommodate the end profile. Where the part is a replacement, compare it with the currently approved component and validate the change through the buyer’s normal quality process.
| Item to confirm | Why it matters | What to provide or request |
|---|---|---|
| Nominal size and drawing dimensions | A size code alone may not specify the full geometry. | Approved drawing, revision, and measured sample if available. |
| Can construction | A two-piece can commonly has an integral base. | Can type, closure location, and a clear product photo. |
| Seam and seamer requirements | The end must work with the body and production setup. | Seam specification and relevant line or tooling details. |
| Material and coating | These must suit the packaged product and use conditions. | Required material, coating, and compound specifications. |
| Order and delivery requirements | Quantity and destination affect quotation and planning. | Forecast, order quantity, packaging needs, and delivery location. |
Identify whether your requirement is for a separate bottom closure, a top end, or a complete can component. Confirm the can format and where the part is installed. If your internal product name says “bottom end” but the drawing shows an integral base, resolve that difference before requesting production pricing.
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Send the supplier the current drawing, revision number, and any relevant acceptance criteria. If no drawing is available, provide a sample and the measurements your engineering or quality team has recorded. Ask the supplier to identify any missing information rather than treating the 211 code as a complete specification.
Share the seaming equipment details and the packaging conditions relevant to the product. The supplier can use this information to review the proposed component, but the buyer should still arrange appropriate sample evaluation and production validation. Do not introduce a new end solely on the basis of a nominal diameter match.
Request pricing against a clearly stated specification and order quantity. Ask about minimum order quantity, available production options, packaging format, lead time, and shipping terms, since these depend on the supplier, product configuration, and order. Confirm that quotation and technical documents refer to the same drawing revision.
There is no reliable universal price, MOQ, or lead time for a 211 end without knowing its specification, order volume, customization needs, and delivery destination. A standard item and a non-standard profile may involve different sourcing or production requirements. For a comparable quotation, provide the same technical and commercial information to each supplier.
Ask whether tooling or setup requirements apply, whether samples can be supplied for evaluation, and how changes to the drawing affect cost or timing. Confirm the quoted quantity unit, packaging method, and delivery basis in writing. These details make supplier comparisons more meaningful than a unit price considered on its own.
Request evidence that is relevant to your own purchasing and quality requirements, such as product specifications or inspection documentation. Avoid relying on broad claims without supporting product-specific information. A clear technical review before ordering can reduce the risk of a size-code misunderstanding.
A frequent mistake is treating “211” as a guarantee of interchangeability. The code is only one part of the specification, and the complete profile and seam interface still need review. Another mistake is ordering a separate bottom end for a can design whose base is integral to the body.
Buyers can also create delays by sending an outdated drawing, omitting the seamer context, or requesting a quote without a quantity and delivery destination. Align the engineering, purchasing, and supplier teams on one current specification. If any dimension or application detail is uncertain, resolve it before committing to a production order.
At Wanhua, we can review your 211 beer can bottom end inquiry against the information you provide and help identify the details needed for a suitability assessment and quotation. Send the drawing or sample information, can construction, application, order quantity, and delivery destination. If you are unsure whether the requirement is for a separate bottom end or an integral can base, include a product photo and explain where the component is used.
A 211 beer can bottom end is commonly associated with a nominal diameter of 2 11/16 inches, approximately 68.3 mm, but that number does not confirm compatibility by itself. First establish whether your can uses a separate bottom closure, then verify the full drawing, material, seam interface, and production requirements. Your next step is to share the current specification or sample with a supplier and request a documented technical and commercial review before placing an order.
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