We make the world cleaner!

Low-temperature applications

Customised protection for your industrial and commercial plants

Ludemann strainers provide industrial and commercial plants with long-term protection against the malfunctions that arise as a result of foreign matter being flushed into the system. This, in turn, results in an increase in the plants' longevity.

In-house screen manufacture to cater to your individual demands!

In 2006, we opened our own screen manufacturing plant in the Netherlands. Per year, a few thousand custom-built screens with a mesh number of between 0.01 and 20mm are manufactured as per our customers' requirements.

The benefits for our customers include increased flexibility in dealing with their individual demands as well as reductions of up to 75% on standard delivery times for this type of customised product.

You too can benefit from our individual manufacturing service!

Ludemann strainers – Providing quality and expertise since 1962

Since the 1962 launch of our GL strainer made from grey cast iron, our range has undergone continual development. Today, our fittings, whether flange versions, socket versions or versions with welded ends, come in brass, gunmetal, spheroidal graphite iron, cast steel, and stainless steel.

The continual expansion of our range and effective development of our products ensures that your systems will remain fully operational into the future.

Currently, around 80 tonnes of grey cast iron GL strainers and approx. 20 tonnes of GL strainers made from other materials leave our warehouse every month.

From the consulting and development phase through to manufacture and service, our focus is always on the customer! We consider our customers to be long-term partners. And our objective is to ensure that the products our customers get perfectly meet their demands.

Our focus is always on the customer: Solutions tailored to suit individual requirements

We value close customer relationships!

Over the last few decades, we have built up close relationships with our partners from the industrial, technical trading and wholesale sectors. And it is thanks to these relationships that we are able to react to the continually changing market requirements in a quick, straightforward manner.

Indeed, this was the reason for our decision to establish branches in France and in the Netherlands. Since December 2008, we have had the additional support of a distribution partner in Great Britain.

Many of our customers have relied on our product’s performance for decades.

We offer customised solutions that are tailored exactly to the requirements of the individual client. As a market leader in the field of fittings, we provide you with support and expertise during every phase of the development and manufacturing process.

We welcome any enquiries regarding our products and services.

So just get in touch. We look forward to your call.

Chemicals / petrochemicals
Power plant technology / heat & power plants / nuclear power stations
Foodstuffs industry
Marine applications
Oil and gas industry
Pulp and paper industry
Steel industry
Low-temperature applications
Drinking water and waste water management
Environmental technology


GL Ludemann Armaturen GmbH
Broichstraße 52
D-51109 Köln


Phone: +49 (0) 221 - 93 35 34-0
Fax: +49 (0) 221 - 93 35 34-29
E-mail: armaturen@ludemann.info