PlasmaJet.ro

Case study: SEO for Plasmajet.ro, 240% organic traffic growth in 12 months

1. About the client

Plasmajet.ro is the official site of Plasma Jet SRL, an industrial and scientific company founded in 1990, specialising in thermal spray coating, including plasma jet, electric arc, HVOF, HVAF and other advanced processes. Built in-house by GOAI Promovare of Alba Iulia, the site presents protective coating services that improve surface properties, including resistance to wear, corrosion, erosion and cavitation, with applications in aviation, energy, automotive (Formula 1), transport and heritage restoration.

Main services and processes:

• Coating by plasma jet (APS), electric arc, HVOF, HVAF, LVOF, cold spray and PTA
• Ceramic, carbide and hard alloy coatings (tungsten carbide, chromium, zirconium, stellite and others)
• Restoration and reconditioning of parts: turbines, Bombardier engine shafts, helicopter landing gear, and Brancusi's Endless Column, with a 50-year guarantee
• Proprietary technologies: anti-stick coatings for Michelin and Pirelli in Formula 1, turbine blade hardening, reconditioning of high-tech components
• ISO 9001 certification and aviation approvals (Rolls-Royce, Turbomeca, Aerospatiale)

Starting position, at launch in 2024:

• Very low organic traffic: under 180 visits a month, in a technical B2B niche, in Romanian and English
• Little visibility on specialist searches such as "plasma coating Romania", "HVOF industrial coatings" and "turbine reconditioning"
• Limited but highly technical competition: international suppliers, with few local competitors
• A platform with existing technical content, but insufficient on-page work and weak backlinks

Main objectives: grow organic traffic, rank for technical coating and thermal spray keywords, attract B2B leads from industry (energy, aviation, automotive), and consolidate the company's authority as a regional leader in thermal spray.

2. The strategy

We applied a technical B2B SEO strategy, adapted to the 2025-2026 Google algorithms, with the emphasis on detailed technical content, E-E-A-T, and optimization for how-to and industrial service searches. It ran in three phases:

Phase 1: technical and on-page audit (first 3 months)

• Full SEO audit: speed, Core Web Vitals and a clear multilingual URL structure, Romanian and English
• Rewritten titles and meta descriptions, for example "Plasma jet and HVOF coating, industrial surfaces in Romania | Plasmajet.ro"
• Schema.org for Service, HowTo, FAQ, Organization and BreadcrumbList
• Process and application pages optimized for featured snippets and AI answers

Phase 2: content and link building (months 4 to 8)

• Expanded technical content: more than 40 articles and guides, such as "What is plasma jet thermal spraying?", "HVOF compared with HVAF for hard coatings" and "Restoring the Endless Column: the Plasma Jet technology behind it"
• Sustainable link building: our own network of 120+ sites, plus guest posts on engineering, metallurgy, energy and industry blogs in Romania and across Europe
• Multilingual SEO: Romanian and English optimization, hreflang tags, and a focus on both global and local technical searches

Phase 3: monitoring and continuous work (months 9 to 12)

• Monthly Google Analytics and Search Console reporting
• UX improvements: a video gallery of the facilities, a quote request form, testimonials from industrial clients
• Adjustments driven by real data and by Google updates

3. Results after 12 months

The results were measured through Google Analytics and Search Console. Here are the key charts.

Chart 1: monthly organic traffic

Growth from roughly 180 visits a month to roughly 612 (+240%)

The blue line shows the growth in monthly organic traffic.

Chart 2: domain authority (Ahrefs estimate)

From 9 to 31 over 12 months

The green line shows the progress in domain authority.

Chart 3: monthly quote requests

Growth from roughly 6 to roughly 20 requests a month (+233%)

The red line shows the growth in B2B leads.

4. Conclusion and lessons

Plasmajet.ro shows how technical SEO and specialist content can consolidate a niche industrial company's position as a regional leader in thermal spray coating. As an in-house project of GOAI Promovare in Alba Iulia, it demonstrates our work optimizing high-tech B2B services, multilingual technical content, and attracting qualified industrial leads.

Key lessons:

• Detailed technical content with real examples (Formula 1, turbines, heritage restoration) builds strong authority
• Multilingual optimization and link building in engineering niches bring relevant international traffic
• Long guarantees and certifications drive trust and conversion in premium services

If you would like similar results for your business, ask us for a free SEO audit today.

Contact: 0754 308 781 | contact@goai.ro

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A project by GOAI Promovare, specialists in industrial SEO and technical services, based in Alba Iulia.