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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil EngineeringMuttenzLehmann Rohrleitungsbau AG
Lehmann Rohrleitungsbau AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company's core activity is pipeline construction, particularly the planning, manufacture and installation of high-quality pipeline systems for various industrial sectors such as chemicals, energy, pharmaceuticals, paper and food.

AI-generated
Offering

Products & services

Industry:Civil Engineering
✓ Offered10
Piping construction
Planning, manufacture, installation and maintenance of piping systems for industrial plants; also on site, with workshop fabrication, commissioning and service.
Engineering and planning
Engineering, technical design, 2D/3D project solutions, CAD-supported sizing and static and dynamic calculations for piping and plant projects.
Steel construction
Fabrication of steel structures for various applications, including steel construction in the context of piping and plant construction projects.
Equipment fabrication
Erection and fabrication of equipment such as cooling water and heating racks, heat exchangers, boilers and vessels.
Assembly supervision
Supervision of on-site assembly with documented inspections, tests and control of the execution in accordance with technical specifications and standards.
Documentation preparation
Preparation and updating of technical documentation for piping systems, including isometrics, material lists, operating and maintenance instructions as well as test reports.
Static calculations
Calculation of piping systems, pipe stress/loading, strength and elasticity as well as analyses with ROHR 2, PRO-RSTAB and RFEM.
Fire suppression systems and fire-extinguishing lines
Design and installation of foam extinguishing, water extinguishing and CO2 fire-extinguishing systems as well as smoke extraction ducting and associated extinguishing agent lines.
Plant construction for power plants and energy centres
Pipelines, high-pressure lines, cooling systems, district heating off-takes, turbine piping as well as hot-water and steam lines for power plants and energy centres.
Piping and plant construction for chemicals and pharmaceuticals
Process, energy and plastic piping systems, jacketed lines, high-temperature systems as well as cleanroom and GMP planning for chemical and pharmaceutical applications.
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3.9/5

Lehmann Rohrleitungsbau AG

Trust & reputation

ranQ Trust Score of Lehmann Rohrleitungsbau AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Lehmann Rohrleitungsbau AG scores 53.8 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.70.824%
  • 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.27.910%
  • 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.35.08%
Lehmann Rohrleitungsbau 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%
Lehmann Rohrleitungsbau 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%
Lehmann Rohrleitungsbau AG scores 1.1 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 35.1.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Lehmann Rohrleitungsbau AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 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
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Hier entsteht die Karte
Rothausstrasse 61
4132 Muttenz

At a glance

Legal form
Corporation
UID
CHE-104.782.684
Founded
1998 · 28 years
Last commercial register change
December 1, 2025
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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