About UniWEMA®

Where precision meets innovation in welding

With a legacy spanning seven decades, we are proud pioneers of the high-precision forming and welding of metals. 

Our Center of Excellence (Innovation, Engineering, Manufacturing & Services) is based in Hanover, Germany. 

UniWEMA® solutions have been developing industrial solutions for the production of longitudinally welded pipes and welded metal jackets.

Our expertise extends across diverse sectors, including the manufacturing of lean or corrugated tubes, serving the following key industries:

• MV and HV power cables (Land, Subsea, Railways)
• Fiber optical, repeater, sensor and control cables (Land and Subsea)
• Heating, Ventilation and Air Conditioning (HVAC)
• Cryostats for High-Temperature Superconducting (HTS) cables
• Healthcare needles
• Cryogenics transfer lines (Healthcare, aerospace, LH2 infrastructures)

Over the past decades, we have been able to develop a wide range of laser techniques (Green Laser, TIG, CathForce, PolyArc…) ensuring the high-quality and continuous welding of metals such as aluminum, copper, stainless steel and zinc. We offer machines capable of managing various design of sheathings such as smooth, corrugated, metal and composite. 

Embracing Industry 4.0, our state-of-the-art production lines seamlessly blend innovation and expertise, ensuring safe, high-quality, and reliable manufacturing.

# Welding technology

With more than 70 years' experience, we combine a wide range of magnetic and non-magnetic metals, noble metals such as platinum, alloys and surfaces - whether coated or highly reflective. We offer a full range of welding capabilities, from longitudinal and transverse techniques to circular welding, facilitated by robotic integration.

# Laser technology

We are the first to implement a green laser welding unit into a continuous welding process. Up to 50 % more energy is absorbed by copper in the green wavelength spectrum compared to the infrared spectrum. We utilize this advantage to produce much smaller tubes with reduced wall thicknesses, still achieving the high seam quality that our customers have been used to from laser welding before.

UniWEMA® product line is made of:

• Cross Welding machines with UNICross®
• Longitudinal Welding Machines with NanoWEMA®, MicroWEMA®, DeciWEMA® 

We are committed to delivering excellence, where every product reflects our dedication to high standards and a tradition of innovation that has defined us for the past 70 years.

Propel your projects into the future, where precision meets excellence, and safety and sustainability drive every forming and welding application.

UniWEMA® is a commercial brand owned by Nexans Group.