ISO 9001 · 14001 · 45001IATF 16949QUALICOATUL 1332CNAS L15415
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Zinc-rich epoxy · thermosetting powder coating

EZ Series Zinc-Rich Epoxy Anti-Corrosion Primer

EZ series is a zinc-rich epoxy powder primer that provides cathodic electrochemical protection to steel in heavy industry, power equipment and structural steel. Tested to at least 2000 h neutral salt spray (ISO 9227) with adhesion class 0 (ISO 2409). Formulated as a high-strength anti-corrosion primer under a compatible topcoat.

Cure 190–200 °C PMT 10–15 minFilm 80–120 µmSpray 40–100 kV
EZ series powder coating colour panels

Key features

≥ 2000 hNeutral salt sprayISO 9227
CathodicZinc-rich protectionHigh-purity Zn filler
1.5–2.2Specific gravity, g/cm³Depends on zinc content

Technical data

Coating properties measured on cured films under the conditions stated in the WANAN EZ series technical data sheet. Every value is tied to its test method.

EZ series — coating performance
PropertyResultTest method
Gloss, 60°As agreedISO 2813
Impact50 kg·cmISO 6272-2
Flexibility (mandrel bend)≤ 3 mmISO 1519
Cross-cut adhesionClass 0ISO 2409
Pencil hardnessHISO 15184
Neutral salt spray≥ 2000 hISO 9227
Test panels: 70 × 150 × 0.6–0.8 mm phosphated steel; 0.2–0.3 mm panels for flexibility, impact and cupping. Panels cured under conditions agreed with the customer and conditioned 24 h before testing. Xenon-arc weathering per ISO 16474-2 method 1: irradiance 0.51 W/m² at 340 nm, black-standard temperature 65 ± 2 °C, RH 40–60 %, spray cycle 18/102 min. Values apply only to the test methods and conditions stated; they are not a warranty of service life.
Powder properties
Resin chemistryHigh-purity zinc functional filler in epoxy resin with matched hardener
Specific gravity1.5–2.2 g/cm³ (depends on zinc content)
AppearanceFree-flowing powder
ColoursColour range available; typically grey primer shades
VOCEssentially no VOC emission during application; RoHS-tested (SGS)

Application parameters

Application methodElectrostatic spray, 40–100 kV
Cure schedule190–200 °C (374–392 °F) for 10–15 minObject (metal) surface temperature, not oven set-point
Film thickness80–120 µm recommended; 80–180 µm working range
AppearanceFree-flowing powder
Packaging25 kg carton, non-hazardous for transport
StorageCool, dry, below 35 °C (low-temperature-cure grades below 25 °C)
Shelf life6 months

Cure temperature is the object surface temperature. Oven set-points must be adjusted to the part mass, line speed and oven type so that the metal itself reaches 190–200 °C for 10–15 minutes. Pretreatment must meet the agreed specification; film thickness and application method influence colour, gloss and appearance, and laboratory panels differ from production parts, so gun settings are finalised on the customer's line.

Where EZ series is used

Zinc-rich powder primers protect steel two ways: the epoxy film is a barrier, and the zinc sacrificially corrodes before the steel at scratches and cut edges. EZ series is used on construction and agricultural machinery frames, transformer tanks, switchgear, rail vehicle bodies, wind and solar structures and other heavy steel where a two-coat system is specified. The topcoat is normally a WANAN P series polyester; inter-coat adhesion and cure matching must be confirmed on trial panels for each combination.

Typical applications

Compliance & quality system

WANAN powder coatings are produced under quality, environmental and occupational-health management systems certified to ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018, and the design and manufacturing of thermosetting powder coatings is certified to IATF 16949:2016. Batch testing is carried out in WANAN's in-house laboratory, accredited by CNAS (L15415) to ISO/IEC 17025:2017.

SGS reports (2026) on WANAN powder coating samples show compliance with RoHS Directive (EU) 2015/863, REACH SVHC candidate list screening at ≤ 0.1 % (w/w), soluble heavy metals, and California Proposition 65 limits for lead, cadmium and phthalates. Results apply to the tested samples; see certifications & compliance for report numbers and scopes.

Colours & finishes

Colour range available; typically grey primer shades. RAL K7 shades, custom colour matching from a sample panel, and gloss levels agreed per project (measured at 60°, ISO 2813). WANAN maintains a library of roughly 100,000 formulated sample panels, which shortens matching time for repeat and near-match colours. See colours & finishes.

Packaging, storage & supply

  • 25 kg cartons; non-hazardous for road, sea and air transport.
  • Store in a cool, dry place below 35 °C; 6-month shelf life from date of manufacture.
  • Produced across 7 production bases in China and Southeast Asia with a group capacity of about 80,000 t/year.
  • Minimum order quantity, lead time and Incoterms are confirmed per project on request.

Frequently asked questions

Does EZ series need a topcoat?

EZ series is designed as a primer. It delivers the corrosion protection of the system, while a topcoat provides colour, gloss and weathering resistance. On outdoor equipment WANAN normally pairs EZ with a P480, P720 or P1680 polyester topcoat. The primer-topcoat combination must be validated for inter-coat adhesion and cure compatibility on the customer's line before specification.

Can the salt spray values of EZ and a P series topcoat be added together?

No. Each figure applies to the single coating tested alone under the conditions in its TDS. A two-coat EZ plus P series system is tested as a system on the customer's substrate and pretreatment. WANAN's CNAS-accredited testing center can run the combined-system salt spray, adhesion and weathering tests as part of project qualification.

Is EZ series a replacement for FBE pipeline epoxy?

No. EZ series is a zinc-rich primer for structural steel and equipment. FBE and 3PE pipeline coatings are dedicated systems with their own gel time, cathodic disbondment and hot-water immersion requirements. For pipeline projects WANAN qualifies a specific grade against the project standard rather than substituting a general anti-corrosion powder.

Downloads

Performance data are valid only for the test methods, panels and cure conditions stated. They do not constitute a service-life warranty. Combined primer/topcoat systems must be qualified as a system.

Talk to our technical team

Send the substrate, service environment and your current cure window. We reply with candidate series, TDS and sample options.