Reviewed technical and procurement guidance · 10 August 2026

PPGL Steel Coil

PPGL coil is prepainted aluminum-zinc alloy-coated steel coil specified by substrate grade, Al-Zn coating designation, pretreatment, paint chemistry, film build, color, dimensions, forming and cut-edge requirements.

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Common grades

Grade + product

PE Polyester PPGL Coil

PE Polyester PPGL Coil is prepainted 55% aluminum-zinc alloy-coated steel using a broadly used polyester coil-coating option for cost-controlled fabrication; selection must still verify formability, ultraviolet exposure, corrosion environment and the complete paint build.

Grade + product

SMP Silicone-Modified Polyester PPGL Coil

SMP Silicone-Modified Polyester PPGL Coil is prepainted 55% aluminum-zinc alloy-coated steel using a formulation-specific silicone-modified polyester system often selected for harder, weather-exposed building finishes; flexibility and weathering claims require test data for the exact product.

Grade + product

HDP High-Durability Polyester PPGL Coil

HDP High-Durability Polyester PPGL Coil is prepainted 55% aluminum-zinc alloy-coated steel using a supplier-defined high-durability polyester category for demanding exterior building envelopes; procurement should replace the generic HDP label with measurable coating and weathering requirements.

Grade + product

PVDF Fluoropolymer PPGL Coil

PVDF Fluoropolymer PPGL Coil is prepainted 55% aluminum-zinc alloy-coated steel using a premium fluoropolymer coil-coating family commonly considered for ultraviolet and color-retention demands; resin content, pigment, primer, film build and forming limits must be specified for the exact system.

Specifications and dimensions

Coated thickness, width, edge, coil inside diameter, mass and winding control
Aluminum-zinc coating designation, pretreatment, primer, top/back coat and film thickness
Color, gloss, protective film, bend radius, profile and cut-edge requirement

Standards and supply condition

ASTM A755/A755M over an applicable ASTM A792/A792M aluminum-zinc alloy-coated substrate
EN 10169 over the applicable EN 10346 aluminum-zinc-coated substrate designation

Manufacturing and processing

Aluminum-zinc coated substrate is cleaned and chemically pretreated for the selected coating line.
Primer, top coat and back coat are roll applied, oven cured, cooled, inspected and recoiled.

Typical applications

Long-life roofing and wall cladding
Industrial buildings and prefabricated panels
Gutters, trim and roll-formed building components

Quality and acceptance controls

Verify substrate grade, metallic coating and organic coating system as three separate order requirements.
Check dry-film thickness, adhesion, color, gloss, surface appearance, forming performance and back coat.
Agree color tolerance, protective film, cut-edge treatment, coil or bundle packing and dry storage before shipment.

Include in your RFQ

Substrate grade and metallic-coating specification
Paint chemistry, primer, top/back coat and dry-film thickness
Color standard, gloss and permitted color tolerance
Thickness, width or profile geometry, tolerances and quantity
Forming duty, protective film, tests and inspection document
Packing orientation, dry storage, destination and delivery term

Selection limits

Aluminum-zinc coating can behave differently from zinc coating at cut edges and in wet alkaline environments.
Compatibility with concrete, treated timber, fasteners, sealants and runoff paths requires project review.

10 August 2026

Sources and technical review

ASTM A755/A755M Prepainted Metallic-Coated Steel Sheet

ASTM International · A755/A755M-18(2024); ordered edition controls

Metallic-Coated Steel Standards and Reference Materials

International Zinc Association / GalvInfo Center · Technical reference collection

RFQ support

PPGL Steel Coil

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