IS 14246:2024 Continuously Pre-Painted Galvanized Steel Sheets

IS 14246 standard was provided in the year 2013 and since then, several amendments have been made to this standard. Some of these revisions aim to enhance the applicability and the use of this standard in the present commercial aspect. IS 14246:2024 is an updated supersession of its previous version. This standard includes testing methods that have been amended, material specifications that are revised, and also measures undertaken for quality control.

The IS 14246:2024 specification brings a significant improvement in the assurance of quality to pre-painted galvanized steel sheets and strips. Manufacturers can ensure product reliability, and continue generating a safer consumer environment by adopting this specification. Relating to standards such as IS 14246 becomes more important as industries grow by the introduction of new technologies and materials while keeping abreast of competition in the market.

This standard deals with the specification for continuously pre-painted hot-dip galvanized steel sheets and strips. The sheets and strips coated by uniformly applying and baking strong and resistant organic coatings on one or both surfaces of the sheets and strips of galvanized steel include alkyd, epoxy, polyester, and acrylic coatings. The base is hot-rolled or cold-rolled sheets and strips. This also covers the requirement for different classes of paint coating durability based on the magnitude of the severity of the application.

• Material Content: The steel sub-strata should meet all designated mechanical properties such as yield strength and tensile strength, as well as chemical composition limits for carbon, manganese, phosphorus, sulfur, and silicon.
• Coating Standard: Minimum thickness of zinc coating for anticorrosive protection, with various classes of galvanizing in line with respective end-use applications.
• PrePainting Treatment: The pretreatment process should be of uniform quality, and the types of paints applied are polyester, polyurethane, etc.
• Testing Methods: Various tests such as adhesion tests and corrosion tests, which include salt spray tests and mechanical properties tests, will be done following international testing methods for alignment with the best international practices.
• Dimensional Tolerances: Providing clear specification that states the acceptable limits of dimensions so that the product does not pose problems in its use.
• Marking and Packaging: Products shall have marking of the manufacturer and the product, as appropriate, depending on the provision of the standard and packaging requirements submitted to avoid damaging the products during transportation.

Adhering to IS 14246:2024 is vital for manufacturers as it:

• It ensures the quality and performance of the product.
• There is an enhanced marketability since, for the most part, the consumer demands a product that can withstand better handling and faces no safety hazards
• There is a reduced danger of product liability in respect of product failure or defect.

Pre-painted galvanized steel sheets are used immensely in all walks of industries due to their aesthetic appeal as well as functional properties, such as:

• Construction: Used for roofing sheets, wall panels, and cladding materials
• Automotive: Applied in the manufacture of body panels that require corrosion protection.
• Home Appliances: Applied in refrigerators, washing machines, and many household appliances

Corpseed can help businesses comply with IS 14246:2024 by providing services such as certification assistance, quality control, and ensuring that the production processes meet the required standards for continuously pre-painted galvanized steel sheets and strips.