Employee (m/w) for our internal sales department - on full time
or flexible part time basis -

Ideally you have finished an apprenticeship in office administration or in the field of plastics processing. Beyond that, you have been working for several years in internal sales and know already the trading structures in the B2B area.

Your responsibilities will include primarily the following tasks:
• Active processing of customer inquiries
• Support of German customers in all commercial and technical matters
• Continuous further development of customer relationship as well as new cusstomer acquisition
• Preparation of quotations and appropriate tracking up to delivery
• Market research and purchasing

Your profile:
• Age of 40 years and above
• Successfully completed commercial or technical training,
  Career changers are welcome
• First professional experience preferably with customer oriented tasks
• Experience in the scope of plastic pipe systems would be an advantage
• Good knowledge of MS office and outlook 
• Customer and solution oriented personality
• Courteous manner and target-oriented communication skills
• Structured work style and personal initiative
• Excellent German language skills (native speaker level)

We offer you:
- An interesting and secure full-time job in a  continuously growing and future-oriented agile enterprise
- Flat hierarchies and quick decision processes
- A wide range of tasks with a high level of responsibilities
- Flexibel work times

Are you interested? – Then we look forward to receiving your application!
We kindly ask you to address your brief application indicating the earliest possible starting date to Bianka Muzzalupo-Heuvens

Web-developer for online marketing (w/m)

starting on the next possible date

Your tasks:
You will be working on interesting and varied projects in online marketing.
For our customers and their products you will realize sophisticated technical solutions on the basis of  PHP, HTML, CSS and MySQL.

Job requirements:
• university degree (media or business informatics)
• alternatively completed vocational training and professional experience
• very good knowledge of PHP, HTML, CSS and MySQL
• reliable handling with web technologies, such as XML, JavaScript, AJAX, OOP
• interest in current and cutting-edge techniques

We offer you:
• interesting and varied online projects
• mid-sized, major and multinational customers
• a young and motivated team
• the freedom for indepent working and personal development

Did you now find your dream job?

You are web-developer, PHP-programmer, frontend developer HTML-coder, career changer, IT specialist or computer scientist?

Are you interested? Then we kindly ask you to address your application to:
Bianka Muzzalupo-Heuvens


Mobile app developer (m/w) iOS and/or Android

starting on the next possible date

Are you tired of small start-ups? You are looking for security, want to know, how an innovative company is ticking, but nevertheless shape the future?
Then come and join us!

Your tasks as mobile app developer (m/w) iPhone iOS and/or Android :

Technical conception, design and development of innovative mobile applications for smartphones and tablets in different settings.
Significant participation in planning new mobile projects and tablet solutions.
Preparation of test scenarios and ensuring the product quality.
Close cooperation with the product management and the backend team.

Your profile:

University degree (business) informatics or a similar vocational training. 
Sound experience in the development of mobile applications under iOS and/or Android.
Good knowledge of objective-C and Cocoa or Java and Android.
Experience in web technologies (Javascipt, HTML, XML, WebServices, JSON/Rest etc.).
Knowledge of continuous integration in mobile environments.
Team spirit, strong sense of responsibility and good communication skills.
Great interest in technical issues and advanced mobile technologies.
Strong communication skills as well as independency and personal initiative.
The desire for continuous development (we will gladly support you with our comprehensive training programs).

Are you interested? Then we kindly ask you to address your application to:
Bianka Muzzalupo-Heuvens

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Plastic pipe systems

Overview of plastic pipe systems
Technical information on ABS pipe systems
Technical information on PVC  U pipe systems
Technical information on PVC  U transparent pipe systems
Technical information on PVC  C pipe systems
Technical information on PP pipe systems
Technical information on PP-R pipe systems
Technical information on PE pipe systems
Technical information on PVDF pipe systems

Chemiedur - pipe

Technical information on UP-GF (FRP) pipe systems
UP-GF (FRP) pipes
UP-GF (FRP) molded parts and connection
UP-GF-PP (FRP) molded parts and connection
UP-GF (FRP) adhesive collars
UP-GF (FRP) loose flanges
Pot Strainer DN 200 - DN 500 Inliner PP/FRP Coated
Pot Strainer DN 200 - DN 500 Inliner FRP/CBL Coated
Angle Seat Strainer DN 200 - DN 400 Inliner FRP/CBL Coated
Manhole mad of FRP and PP/FRP

Plastic pipes

Calculator for cutting pipes
Guidelines for sawing plastic pipe
Leftovers in plastic pipe
Standardization of plastic pipes and molded parts
PVC U pipes deviations
Pressure loss in pipe systems out of PVC U, PVC C and ABS pipe systems
Distinction between Rp, R and G threads
Screw lengths for flange connections

Plastic fittings

PVC U transparent ball valves
Diaphragm valves
Block valves
Butterfly valves
Plastic needle valves


Plastic Valves according to ATEX

New EU guideline 2014/34/EU
Plastic Valves in EX zones
Y-Strainers PP-EL DN 15 - DN 50
Check valves PP-EL DN 15 - DN 50
Angle seat valves PP-EL DN 15 - DN 50

Bonding of plastic pipes

Bonding manual
Video showing the bonding of pipes

Plastic welding

Guidelines for extrusion welding

Grids / support grids

GFK grids
Grids out of PP -el electrically conductive
Profile support grids out of PP -el electrically conductive

Molded ventilation parts

Ventilation technology

Chemical hose

PVC transparent hose with fabric inlay

Industrial tanks and chemical containers

Dosing tanks and outer containers 35 – 1000 Liter
Salt dissolving tanks 60 -5000 Liter
Storage tanks and vats
Storage tanks for water
Safety and collecting troughs
Industrial tank delivery program
Dosing tanks with agitator
Dosing tank agitators
Dosing tanks with attachments
Dosing tanks made of sheet material
Customized chemical containers
Dosing tanks with level indicators



IBC screw caps DN 150/DN 200
IBC adapters out of PE
IBC adapters out of PP

Attachment parts for tank construction

Vapor separators
CO2 - absorbes
Revision nozzles
Block flange

Filter housings and filter cartridges

PENTEK 3G Slime Line filter housings
PENTEK 3G Standard filter housings
PENTEK Big Blue filter housings
PENTEK PP high temperature filter housings
PENTEK PP all nature filter housings
PENTEK filter bags for Big Blue filter housings
PENTEK surface filter cartridges
PENTEK filter cartridges for depth filtration
PENTEK filter cartridges with activated carbon
CINTROPUR filter systems
CINTROPUR water filters

Flange configurator

Blind flanges, loose flanges,  rectangular flanges

Chemical resistance

Table of chemical resistance for plastic pipe systems

Machined plastic parts

Screw-in parts
Threaded fittings
Screw fittings

Milled plastic parts

Loose flanges and blind flanges made of sheet material

Static mixers

Static mixers made of plastic


Single-type and double-type strainers
Pot strainer DN 300
Angle seat strainer DN 500

Flow meters

Variable area flow meters
Configuration tool for flow meters

Filter presses

Laboratory filter presses

Injection molded parts

Scraper made of PE for filter press

Kwerk Practice Blog

The Kwerk team blogs from the field here

Partnership at the highest level.