Sand and gravel industry
Stone and earth industry
Construction waste and recycling
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Values & Mission Statement

Our mechanical and plant engineering company in the materials handling sector strives to promote the success of our customers in the global economy through innovative and customized solutions.

We strive to be a reliable partner for our customers by providing high quality products and services and focusing on close cooperation with our customers. We believe that our success is closely linked to the success of our customers.

Our employees are our most important asset. We place great emphasis on a positive working environment and encourage continuous training and personal development. We believe that motivated and committed employees are the key to long-term success.

In everything we do, we strive to demonstrate our values of integrity, professionalism and customer focus. We believe these values help us build long-term relationships with our customers and ensure the success of our business.

The Hetra-GSS GmbH

Hetra-GSS GmbH has been providing you with customized materials handling solutions for bulk materials for 20 years. For a variety of raw materials in different industries, the company provides efficient concepts ranging from extraction, conveying and processing to loading and storage. Furthermore, we also offer comprehensive service and engineering.



Gravel and sand processing Arkazienhof

Scope of delivery:

Raw material stockpiling via pivoting belt
Tunnel haul-off with metering combination
Tunnel belt road undercrossing
Plant tapes
Silo feeding belts
Silo discharge conveyor
Truck loading
Neckline via pivoting belt
Steel structure prescreening station
Steel structure gravel washing plant
Steel structure crushing plant
Steel structure granulator
Steel structure classifier

Task performance350 t/h

Project Completion: 2023

Company Website

Project: Bailer Vriezenveen

Scope of delivery:

Pre-screening unit with integration of scoop wheel
Sand tower for fine sand
Stockpile belt
Tunnel belt with metering combination
Plant loading conveyor
Steel structure sand classifier

Steel structure stockpile belts

Task performance: 300 t/h

Project Completion: 2020

Company Website

Project: Breels gravel plant

Scope of delivery:

Scoop wheel plant with raw gravel stockpile belt
Tunnel belt with metering combination
Pre-screening unit
Graining plant with sword washing and setting machine
Grain stockpile belts
Tunnel haul-off with metering combination
Tunnel haul-off granulation with metering combination
Sand classifier
Silo feeding belt
Pivot belts
Belt loop car at sand dump
Tunnel belt with metering combination
Truck loading for all grain sizes incl. continuous pan mixer

Conveying capacity: 700 t/h 

Project Completion: 2015

Company Website

Project: Millingen sand and gravel plant

Scope of delivery:

Prescreening station
Sand classifier
Crushing plant
Silo plant

Ship loading

Conveying capacity: 800 t/h

Project Completion: 2016

Company Website

Big Bag Loader

  • Innovative solution for fast and easy filling of big bags
  • Robust and high quality workmanship
  • Effective solution for filling sand, rubble, construction waste and garden waste.
  • Applicable in disaster control and small quantities