A 73mm fruit can end is a metal end identified by a nominal diameter of 73 millimeters (approximately 2.87 inches), but that measurement alone does not confirm compatibility with a can body or seaming line. Buyers should also verify the end profile, curl and countersink dimensions, material and coating, sealing compound, and the can maker’s seam requirements. In this guide, we explain what to specify, how to check fit, and what information to share with a supplier before requesting a quotation. We recommend confirming technical details against the can and seamer manufacturer’s documentation rather than relying on diameter alone.
This guide is intended for procurement teams, packaging engineers, can makers, and food processors sourcing 73mm ends for fruit products. It is also useful when a buyer is changing suppliers, evaluating a new can body, or investigating a sealing or seaming issue. The information can help organize an inquiry, but it does not replace the can manufacturer’s specifications or a qualified seamer setup review. Final approval should be based on the actual can-end combination and the operating conditions at the filling plant.
A can end closes a metal can and forms part of the package’s sealed structure. On a three-piece can, the package has three main metal components: the body, the top end, and the bottom end. Depending on the package design, one or both ends may be attached through a double seam, a mechanically formed joint made around the circumference of the can.
For fruit products, the end must be appropriate for the can design and the product’s processing and storage conditions. Buyers should establish whether they need a bottom end, an easy-open end, or another specified format; a nominal diameter does not indicate the opening style. The end’s role in package integrity makes correct material, coating, compound, and seam compatibility important selection factors.
Begin by identifying the exact end style required. A plain end and an easy-open end have different designs and use considerations, so they should not be treated as interchangeable based on diameter. State whether the end is intended for the bottom or top of the can, and provide the relevant product drawing or reference specification if available.
Metal type and coating selection should be agreed with the can maker and supplier for the intended food, processing conditions, and packaging system. Buyers commonly need to clarify whether the specification calls for tinplate or another approved metal substrate, along with the coating type and whether the coating is required on the internal surface, external surface, or both. Do not assume that an existing coating is suitable for a new fruit formulation or process; request confirmation for the particular application.
The sealing compound supports the end’s seal in the double-seam area, and its specification should be considered alongside the end profile and can-body flange. Buyers should confirm the compound type and application requirements with the supplier and can maker. If the package will undergo thermal processing, share the relevant process conditions so that suitability can be reviewed rather than inferred from the end diameter.
Ask for the supplier’s drawing or dimensional specification and compare it with the can body and seamer requirements. In addition to the 73mm nominal diameter, verify the end profile, curl, countersink, and other dimensions that define the seaming interface. Tolerances and measurement methods should come from the applicable technical specification, not from an assumed universal value.
| Specification area | What to confirm | Why it matters |
|---|---|---|
| Nominal size | 73mm end designation and matching can-body size | Helps establish the correct size family, but does not prove full fit. |
| End profile | Curl, countersink, and drawing dimensions | These features affect the interface with the body and seaming operation. |
| Material and coating | Substrate, coating specification, and coated surfaces | Must be reviewed for the product and processing conditions. |
| Sealing compound | Compound specification and application requirements | Forms part of the sealing system and should match the package design. |
| End type | Bottom, plain, easy-open, or other required format | Different styles serve different package and consumer needs. |
Identify the can construction. State whether the package is a three-piece can or another construction, and identify whether you are sourcing the bottom end, top end, or both. Provide the can-body drawing or a current approved specification where possible. The 73mm designation alone is not enough to identify the full package configuration.
Share the seaming requirements. Provide the seamer or can-maker requirements for the end profile, body flange, seam dimensions, and setup. A double seam forms a 360-degree joint around the can, so the complete circumference and interface matter—not just a single diameter measurement. Have qualified personnel assess seam results using the applicable plant procedures.
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Describe the product and process. Tell the supplier what fruit product will be packed and share relevant filling, processing, and storage conditions. These details help the supplier and can maker assess material, coating, and compound requirements. If any process information is confidential, agree on an appropriate way to share the necessary technical details.
Review samples and documentation. Compare samples with the approved drawing and package specification, then conduct fit and seaming evaluations on the intended equipment. Record any changes and obtain agreement before production approval. Do not treat a sample’s apparent fit as proof of performance under all operating or processing conditions.
For an efficient comparison, prepare a written specification with four groups of information: package dimensions, end style, materials and coatings, and commercial requirements. Include the annual or initial quantity, packaging and pallet preferences if applicable, destination, requested delivery window, and any documents required for your internal approval. This gives suppliers a consistent basis for reviewing the request and identifying open questions.
Price and lead time depend on the selected specification, order volume, production planning, packaging, and shipping destination. Minimum order quantity can also vary by product configuration and supplier policy, so request the MOQ for the exact end style and material rather than using a general figure. Ask whether quoted lead time begins after order confirmation, specification approval, or another defined milestone.
When comparing quotations, check that the suppliers are pricing the same end format, material, coating, compound, quantity, and delivery terms. A lower unit price may not represent an equivalent specification or the same supply scope. If a supplier proposes a substitute, request a written description of the differences and have the relevant technical stakeholders approve them.
Before placing an order, assess whether the supplier can communicate clearly about technical fit and commercial scope. A capable supplier should be willing to review the requirements you provide, identify missing information, and explain which points require confirmation from the can maker or seamer specialist. For Wanhua, we encourage buyers to send the end drawing, can-body details, product and process information, quantity, and destination so we can review the inquiry against the requested specification.
A frequent purchasing risk is treating nominal diameter as the only fit criterion. Two ends carrying the same nominal size may still differ in profile, compound, coating, or other details relevant to a particular can system. Another risk is approving a product based only on a drawing or sample without confirming performance on the intended equipment.
Buyers should also avoid assuming that a specification used for one fruit product automatically applies to another. Product formulation, processing conditions, can-body design, and seamer setup may affect the requirements. When information is incomplete, document the open points and request technical review before committing to a production order.
The right 73mm fruit can end is the one that matches the complete package specification and can be evaluated for the intended seaming and processing conditions. Start with the nominal 73mm size, then confirm the end profile, can-body interface, material, coating, compound, and opening format. Share those details with suppliers so that pricing and compatibility discussions are based on the same requirements.
To discuss a 73mm fruit can end with Wanhua, send your technical drawing or current specification, intended use, estimated quantity, and destination. If you do not have a complete drawing, provide the can-body details and the information available from your can maker or equipment supplier. We can use the inquiry to identify what is specified, what still needs confirmation, and what information is required to move toward a quotation or sample review.
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