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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryRetail & CommerceWholesale - Spare Parts & Residual MaterialsFrauenfeldSERTO AG
SERTO AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

SERTO AG is a manufacturer of tube unions and connection technology, supplying unions, couplings, valves, tubes, hoses and related spare parts for the transport, distribution and regulation of liquids and gases. The company also provides project engineering, production of customised assemblies (including an ISO Class 8 clean room) and logistics services such as just-in-time kits and consignment stock.

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Products & services

Industry:Wholesale - Spare Parts & Residual Materials
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4.3/5

SERTO AG

✓ Offered8
Tube fittings
Tube fittings in stainless steel, brass, aluminium, PVDF and polyamide; straight, elbow, T/L and cross unions, adjustable unions, and components.
Quick couplings
Quick couplings in stainless steel, brass and PVDF; couplers, nipples and accessories for tube connection applications.
Valves
Regulating valves, non-return valves and ball valves in stainless steel, brass and plastic, plus accessories.
Adaptors
Adaptors in stainless steel, brass, plastic, aluminium and various designs; male/male, female/male, female/female, end elements and hose nozzles.
Tubes and hoses
Plastic and metal tubes and hoses, including a hose configurator for application-specific selection.
Spare parts and accessories
Spare parts, components and accessories for unions, quick couplings and valves; mounting accessories, tube clamps, lubricants and sealing materials.
Project engineering
Custom system solutions, manufacture to drawing and specification, system optimisation, prototyping, simulation tests and support through to series production.
Production
Production of unions, couplings, valves, tubes and hoses; tube bending, tubeline assembly, ready-to-install assemblies, clean room handling and custom parts.
Trust & reputation

ranQ Trust Score of SERTO AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

SERTO AG scores 69.1 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.67.724%
  • 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.65.210%
  • 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.78.08%
SERTO AG scores 89.3 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.70.07%
SERTO 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%
SERTO AG scores 100.0 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 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

SERTO AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.4 out of 5 stars from 12 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
4.4
of 5

Aggregated from 12 reviews across all connected sources

Sources
GGoogle4.412
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Langfeldstrasse 117
8500 Frauenfeld
Opening hours
Mon
07:45 - 11:45, 13:15 - 16:00
Tue
07:45 - 11:45, 13:15 - 16:00
Wed
07:45 - 11:45, 13:15 - 16:00
Thu
07:45 - 11:45, 13:15 - 16:00
Fri
07:45 - 11:45, 13:15 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-109.339.698
Founded
2001 · 25 years
Last commercial register change
July 24, 2026
Employees
11 to 20
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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