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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesMetal ConstructionRümlangKettner Metallbau GmbH
Kettner Metallbau GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Kettner-Metallbau GmbH is the production of metal construction products, particularly fire protection closures and glass construction solutions. The company also offers special custom-made products and advises customers on the planning and implementation of individual metal construction projects.

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Products & services

Industry:Metal Construction
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3.8/5

Kettner Metallbau GmbH

4
Metal construction
Processing steel, aluminium, chrome steel and non-ferrous metals into metal construction products, including staircases, railings, canopies, carports and other structures.
Fire protection doors and closures
Tested fire protection doors and closures, manufactured by certified metalworkers; systems from Forster and Jansen are covered, as well as doors and closures that meet fire protection requirements.
Glass construction
Holistic glass solutions, including glass railings, glass frontages, glass floors, glazing for skylights, conservatories and canopies with glass elements.
Special custom fabrications
Consulting, drafting, design and implementation of special custom fabrications to customer requirements, for example stair railings, replacement doors, partitions, wine racks and other special structures.
Trust & reputation

ranQ Trust Score of Kettner Metallbau GmbH: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

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Data basis 96% · As of October 2026

Kettner Metallbau GmbH scores 49.0 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.50.024%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.45.610%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.50.08%
Kettner Metallbau GmbH scores 75.7 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.83.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Kettner Metallbau GmbH scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Kettner Metallbau GmbH scores 60.0 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.60.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Kettner Metallbau GmbH reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 3.4 out of 5 stars from 5 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
3.4
of 5

Aggregated from 5 reviews across all connected sources

Sources
GGoogle3.45
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Heuelstrasse 36
8153 Rümlang

At a glance

Legal form
Limited Liability Company
UID
CHE-464.375.226
Founded
2017 · 9 years
Last commercial register change
April 15, 2021
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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