Single reduced tinplate coil combines a thin cold rolled steel substrate with a controlled tin coating on both faces. It is supplied as feedstock for cutting, coating, printing and metal packaging manufacture, with temper, coating mass and coil dimensions selected for the conversion line.
Single reduced tinplate coil is a tin-coated flat steel product intended for further conversion. The cold rolled substrate is reduced to the required thickness, annealed and temper rolled before the finished tinplate is supplied in coil form. The combination of a steel base and a thin tin layer provides a useful starting material for a wide range of packaging components. The correct specification depends on how the strip will be cut, formed, joined and coated.
Temper describes an important part of the material condition and should be selected with the component geometry and production route in mind. A material suited to a relatively simple can body may not suit a deeply drawn part. State the applicable product standard, substrate type, temper designation and test requirements rather than ordering solely by thickness or appearance. Single reduced material should not be substituted for double reduced tinplate without technical review.
Specify the tin coating mass for each face. Equal and differential coatings serve different design requirements, and the two faces must be identified correctly when a differential coating is requested. Bright, stone, silver or matt surface descriptions also need an agreed reference. Surface treatment, oiling, cleanliness and roughness can affect downstream printing, lacquering and handling, so these requirements belong in the enquiry.
Potential uses include feedstock for can bodies, ends, closures and general metal containers, subject to the selected grade and process. Coil is particularly useful where the converter controls slitting or cut-to-length operations. It allows material dimensions to be coordinated with production equipment and blank layouts. Images show the supplied material form; they do not demonstrate approval for a finished package or a particular contents.
For food or beverage packaging, the finished coating system, contents, processing conditions and destination requirements must be assessed together. Tin coating alone does not establish food-contact compliance or guarantee shelf life. Send the intended use and any required documents with the specification so that the proposed supply can be reviewed.
The following checklist establishes the information needed for a comparable quotation. Available combinations must be confirmed for the requested order.
| Item | Specification to Confirm |
|---|---|
| Material | Single reduced tinplate, standard and substrate designation |
| Thickness | Nominal thickness, tolerance and measurement basis |
| Width | Finished width, tolerance and edge condition |
| Temper | Full designation and required test basis |
| Tin coating | Mass per face, equal or differential, and face identification |
| Finish | Surface texture, treatment, oiling and appearance requirements |
| Coil format | Inside diameter, outside diameter and permitted coil weight |
| Documents | Inspection records and application-specific requirements |
Confirm uncoiler capacity, lifting equipment, edge requirements and permitted joints before purchase. The combination of coil weight and diameter must be compatible with the receiving plant. If slit strip is required, include each width and quantity, burr requirements and winding direction. Acceptance criteria should be written into the order so that inspection is based on agreed values.
Specify protective wrapping, edge protection, securing method and coil orientation according to the transport and unloading arrangement. Keep identification visible and traceable to the supplied coil. Store material in a dry covered area, avoid condensation and inspect packaging before opening. Damaged wrapping should be addressed promptly; moisture trapped against the strip can affect the surface.
No. Their processing routes and mechanical behaviour differ. Select the material against the intended forming operation and specification; do not treat the names as interchangeable.
Differential coating can be specified where supported by the proposed supply. State the coating mass on each face and the identification method needed by the converter.
Suitability requires review of the complete packaging system and relevant compliance documents. Confirm contents, internal coating, processing and market requirements before approval.
Send thickness, width, temper, coating per face, finish, coil limits, quantity and application. Include any inspection and packing requirements to support a precise offer.
Explore coil, sheet, can body and closure material in our Tinplated Steel category. Send dimensions, coating requirements and application details to request an offer.
