Metalworking Quality and long Experience from East Frisian into the whole world!

Our Service and qualified staff is already  available on a continuous basis for at least 30 years prior to our clients projects and project requirements.

Please, take us at our word by challenging us with ambitious tasks and placing trust in our competency and customer oriented thinking!

Special Steel Constructions
& Engineering

Engineering, fabrication and build-up of Turntables from 50tons to 4000tons for On- and Offshore. Cable Highways and other related Equipment for Cable Installation. Heavy Lift Loading Beams and special Loading and Securing Appliance.

more information

Mobilization & Demobilization

From Supporting Your Crew, to pre-fabrication in the own workshop to a complete Turn-Key managing solution with our own strong subcontractors including Layouts, Calculations and Classification handlings and approvals.

more information

Marine Service

Our qualified Team is always ready to perform steel work emergency repairs, maintenance and service in all German and Neighboring States. We provide modern technic and a work shop for fast pre-fabrications and repair – depends to the requirements,

more information

Structural Engineering
& Hall Construction

Profit from our experience and our high degree of  expertise in manufacturing steel halls. Since 30 years we deliver standard halls as for storage as well integrated producing processes as in the automotive, petrochemical, waste incineration plants and other industry branches.

more information

Welcome to Stahlbau Oltmanns

Take advantage of our expertise in steel and metal construction, from East Frisian into the whole World! Over 3 decades a trustful partner in steel sectors as Plant Construction, Hall Construction and Special Steel Constructions and Engineering.

We are able to serve branches as Automotive-, Wind Power-, the maritime Offshore and many other Industry and Commercial Sectors. We advocate for a successful cooperation and provide for this a highly qualified and motivated team – basing of all our action the admission of DIN EN 1090 of our company!


Stahlbau Oltmanns

Oltmanns – Your Partner for Challenging Steel Construction Projects

Please, take us at our word by challenging us with ambitious tasks and placing trust in our competency and customer oriented thinking!

No matter in whether kind of specification, if for steel services on multipurpose Vessels, Cable or Pipe Layers, the Off Shore Branch, the Wind Power Industry, Bridge Building and also highly competent at building halls as well our high professionalism for special engineering construction regarding all required Standards and European Rules for Steel and Machine Construction!

Oltmanns GmbH

Schlosserei & Stahlbau
Amboßstraße 2
26632 Ihlow/Riepe

Phone: +49 4928 91530
Telefax: +49 4928 915350


I have read and understood the privacy policy and hereby grant my consent for my data to be recorded, processed and used.