Tel:+8618937709856
cherry@zzkunseng.com 18937709856 WhatsApp
ZZKUNSENG STEEL Reputable Business
EN ZH ES
Request a quote
Pre-painted Galvanized Steel Coil-PPGI Coils

PPGI Coils

Pre-painted Galvanized Steel Coil-PPGI Coils

Color-coated coils—also known as pre-coated steel coils or pre-painted steel sheets—are steel products formed by applying an organic coating to the surface of a metal substrate, curing it, and then coiling the material.

Indicative price Please contact us for more details Final price depends on quantity, tolerance and destination port.
Specifications
Substrate DX51D+Z/AZ，TDC51D+Z、TS350GD+AZ
Thickness 0.12mm-2.0mm
Width 600mm-1,250mm
Coil Weight 3-5ton（can be customized）
Coating painted
Service Range Slitting、cutting、stamping、bending、etc.
Request a quote WhatsApp
  • EN 10204 3.1 mill test certificate with every shipment
  • SGS / BV pre-shipment inspection on request
  • FOB / CFR / CIF — tell us your discharge port

Product overview

Color-coated coils—also known as pre-coated steel coils or pre-painted steel sheets—are steel products formed by applying an organic coating to the surface of a metal substrate, curing it, and then coiling the material.

Classification of Color-Coated Coils
  • Categorized by substrate type—the dimension most directly relevant to your business:

  1. Hot-dip galvanized color-coated coils: The most common type. The zinc layer provides cathodic protection, while the coating adds an extra barrier; suitable for exterior architectural applications.
  2. Aluzinc (galvalume) color-coated coils: The substrate is an aluminum-zinc alloy (approximately 55% aluminum, 43.4% zinc, and 1.6% silicon), offering superior corrosion and heat resistance compared to standard galvanized substrates.
  3. Electro-galvanized color-coated coils: Feature a thin zinc layer (typically around 20g/m² total for both sides). With limited corrosion resistance, they are unsuitable for outdoor use; however, they offer excellent surface appearance and formability, making them ideal for home appliances, furniture, and interior decoration.
  4. Cold-rolled (uncoated/bare steel) color-coated coils: Produced by very few manufacturers. If the coating is scratched and the underlying steel is exposed, it will rust rapidly; these are suitable only for temporary separation or indoor applications.

  • Categorized by coating resin type:

  1. Polyester (PE): Offers good adhesion, a wide range of colors, and low cost, with moderate chemical resistance; suitable for general climatic conditions.
  2. Silicone-Modified Polyester (SMP): Provides enhanced hardness, wear resistance, and heat resistance, along with good exterior durability and resistance to chalking; flexibility is moderate.
  3. High-Durability Polyester (HDP): Features excellent color retention and UV resistance, offering a strong balance between performance and cost.
  4. Fluorocarbon (PVDF): Delivers superior weatherability, UV resistance, and chalking resistance, along with excellent solvent resistance. While it comes at a higher cost and with a more limited color selection, it is the ideal choice for harsh environments or applications requiring high long-term durability.
In addition, they can be categorized by application—for instance, for use in construction, home appliances, or furniture. (In Baosteel’s standards, applications are classified using codes such as JW for exterior construction, JN for interior construction, GC for steel windows, JD for home appliances, and JJ for furniture.)

Applications
The core application areas for color-coated steel coils include the following:

  • Construction: This is the largest application sector. It encompasses roofing and wall cladding for industrial plants and warehouses, profiled steel sheets (corrugated or ribbed panels), sandwich panels, roller shutter doors, door frames, rainwater drainage systems, and ventilation ducts. The roofing panels you previously inquired about are made from color-coated steel coils designed for construction use.

  • Home Appliances: Casings for refrigerators, washing machines, air conditioners, and microwave ovens, as well as components like lamp shades and radiators. Color-coated coils used in home appliances require higher standards in terms of manufacturing processes and surface quality.

  • Transportation: Interior vehicle trim, partitions, bulkhead panels, shipping containers, safety barriers, and more.

  • Others: Billboards, whiteboards, instrument panels, and furniture (such as wardrobes and bookshelves).
Functionality
The core function of color-coated steel coils lies in the combination of "the structural strength of metal" and "the protective and decorative properties of organic coatings":

  • Corrosion Protection: The coating isolates the steel substrate from corrosive media, preventing chemical or electrochemical reactions. Furthermore, galvanized or galvalume (aluminum-zinc alloy coated) substrates provide additional protection through sacrificial anode effects or physical barriers. For instance, when a hot-dip galvanized substrate is used, the dual protection—provided by both the coating and the zinc layer—results in a longer service life compared to standard galvanized steel alone.

  • Aesthetic Appeal: These coils can be produced in a wide range of colors (such as off-white, ocean blue, or brick red). The surface can also be embossed or printed, allowing the material to be used directly for visible components without the need for subsequent painting.

  • Formability and Processability: Since the coating and curing processes are completed at the steel mill, the coils can be directly processed by downstream manufacturers—through operations like leveling, roll forming (for roofing/cladding), stamping, or bending—eliminating the need for on-site painting and the associated environmental compliance burdens.

  • Specialized Functions: Depending on the specific coating formulation, the material can be engineered with additional properties, such as anti-static, self-cleaning, thermal insulation, or antibacterial capabilities.

Specifications

Pre-painted Galvanized Steel Coil-PPGI Coils — Specifications
Substrate DX51D+Z/AZ，TDC51D+Z、TS350GD+AZ
Thickness 0.12mm-2.0mm
Width 600mm-1,250mm
Coil Weight 3-5ton（can be customized）
Coating painted
Service Range Slitting、cutting、stamping、bending、etc.
MOQ 15ton

Values are typical. Tolerances and test requirements are confirmed on the quotation.

Related products

All products

Ask for a quotation on this product

Request a quote WhatsApp

Send quantity, destination port and required certificates — we reply within one working day.

WhatsApp