Riya Zinc Flake CoatingsPR Products Group
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About RZF

The coating arm
of a fastener group

Riya Zinc Flake Coatings was established in 2023 as the corrosion-protection unit of PR Products Group, Rohtak — a group that has been forging fasteners since 2010 and knows exactly what a coating has to survive.

Why we exist

Why a fastener group
built a coating plant

The group forged its first fasteners in 2010 and added its own plating in 2012. As customers moved to class 10.9 and 12.9 high-tensile parts, they needed serious corrosion protection without the hydrogen embrittlement risk of the electroplating route — and that means zinc flake.

Rather than sending parts out and losing control of quality and lead time, the group built its own zinc flake plant and licensed globally proven chemistry for it: water-based GEOPERT® from Zincotec® Korea and solvent-based Zintek® from MKS' Atotech. The people who run this line make fasteners themselves — so the coating is judged the way a fastener maker judges it: by the salt spray report, the torque chart and the batch record.

Today a component can be forged, formed, plated or zinc flake coated and preapplied with thread lockers without ever leaving the group's road in Rohtak. RZF is the corrosion-protection step in that chain, and it carries the same motto every unit carries: Nothing Behind Quality.

The group timeline

Fourteen years, five units

Each unit was added when customers needed the next step under the same roof — from raw forging to a fastener that arrives at the assembly station ready to run.

2010PR Products — cold forging, the founding unit
2012Riya Enterprises — in-house plating
2022PR Preapplied — Tecnologic 3 preapplied thread lockers and sealants
2023Riya Zinc Flake Coatings — advanced zinc flake corrosion protection, this plant
2024PR Fasteners — nut forming line, expanding group capacity
Technology partners

Global chemistry,
applied in Rohtak

RZF does not mix its own chemistry. It applies two of the most proven zinc flake platforms in the world, to their published specifications, on controlled lines.

Water-basedZincotec® Co., Ltd.South Korea

Developer of the GEOPERT® water-soluble zinc-aluminium flake family. Low VOC, chromium-free, bright silver, with published salt spray performance of 1,500+ hours at 6 to 8 microns for GEOPERT® 500.

  • GEOPERT® 500, 720, 505
  • BLACKPERT G glossy black
Solvent-basedMKS' AtotechZintek® technology

One of the world's leading surface-finishing companies. Zintek® silver and black basecoats with functional topcoats, used globally for fasteners, brake, chassis and stamping parts.

  • Zintek® 200, ONE HP, 300 HP
  • Zintek® Top XT, Techdip® Black SL
Established2023The group's corrosion-protection unit at HSIIDC, Rohtak
Capacity120 TCoating throughput per month, dip-spin plus automatic line
The group5 unitsForging, nut forming, plating, zinc flake and preapplied, on one road
PR Products Group

Five units, one road

Every unit stands on its own, and each hands the part to the next. Visit the rest of the group:

2010 · Cold forgingPR Products →

The founding unit: cold forged fasteners and engineering components.

2012 · PlatingRiya Enterprises →

In-house electroplating for the group's fastener range.

2022 · PreappliedPR Preapplied →

Tecnologic 3 thread lockers and sealants, applied before dispatch.

2023 · Zinc flakeRiya Zinc Flake CoatingsYou are here

Advanced zinc flake corrosion protection — this plant.

2024 · Nut formingPR Fasteners →

Nut forming line expanding the group's fastener capacity.

The groupprproducts.in →

The full group site: products, infrastructure, certifications and clients.

Work with us

Judge us by a batch

The fastest way to know a coating plant is to send it a part. Tell us the substrate and the salt spray figure, and put our report next to your specification.

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