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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryRetail & CommerceRetail - General Specialty TradeFrauenfeldKeller Stahl AG
Keller Stahl AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Keller Stahl AG supplies steel, stainless steel and aluminium products as well as construction materials, tools and plumbing/heating components. The company provides cutting services, warehousing, logistics and transport solutions and operates a 24‑hour emergency service for plumbing.

AI-generated
Offering

Products & services

Industry:Retail - General Specialty Trade
✓ Offered6
Steel & Metals
Large range of steel, stainless steel and aluminium products; on-site advice, high-bay warehousing, cutting-to-size, scheduling, packaging and timely delivery or pickup in Frauenfeld.
Reinforcing Steel & Accessories
Reinforcing steel with in-house cutting-to-size, bending and rebar mat storage; reinforcement accessories for construction, advice by phone, e-mail, on site and at the construction site.
Tools, Building Supplies & Cast Components
Tools, building supplies, cast building components and civil engineering products; sourcing of standard items as well as direct delivery to the construction site when required.
Building Services Technology
Sanitary and heating products for building services; stocked items, advice, procurement of missing materials and ordering via WhatsApp Business or on site.
Supply Technology
Supply products from the water and heating technology sector; warehousing, advice and prompt procurement when materials are not available.
Logistics & Transport
Transport services for ordered materials; delivery with trained drivers and vehicles equipped with a crane, vans as well as lifting and securing materials.
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4.1/5

Keller Stahl AG

Trust & reputation

ranQ Trust Score of Keller Stahl AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Keller Stahl AG scores 59.4 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
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.59.324%
  • 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.67.110%
  • 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%
Keller Stahl AG scores 92.3 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.100.012%
  • 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.82.07%
Keller Stahl AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
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%
Keller Stahl AG scores 42.9 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 35.42.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Keller Stahl AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.1 out of 5 stars from 13 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
4.1
of 5

Aggregated from 13 reviews across all connected sources

Sources
GGoogle4.113
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Langfeldstrasse 52
8500 Frauenfeld
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:30
Tue
07:00 - 12:00, 13:00 - 17:30
Wed
07:00 - 12:00, 13:00 - 17:30
Thu
07:00 - 12:00, 13:00 - 17:30
Fri
07:00 - 12:00, 13:00 - 16:45
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-102.297.550
Founded
1978 · 48 years
Last commercial register change
August 29, 2025
Employees
21 to 50
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.
100.0
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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