Weldplast S4
The Weldplast S4 by Leister redefines precision and power in plastic welding, offering unmatched versatility for construction and industrial projects across Saudi Arabia.
- Precision plastic welding with dual design variants for equipment/container construction and civil engineering applications.
- Processes welding wire with cross-sections of 3mm, 4mm, and 5mm for versatile project compatibility.
- Equipped with a high-powered, brushless blower for superior pre-heating performance in demanding environments.
- Customizable with various welding shoes and an optional angle adapter for enhanced control and adaptability.
- Ideal for aquaculture, boat repair, plastic tank fabrication, and waterproofing projects in Saudi Arabia.

Sunday - Thursady
08:00 AM - 06:00 PM
Disclaimer: Please note that images or illustrations may differ from the actual products due to presentation reasons and are therefore non-binding. Technical changes and errors are excepted. For the most accurate information, contact our customer service team.
Weldplast S4: The Ultimate Plastic Welding Extruder for Construction and Industrial Applications
When precision, power, and versatility are non-negotiable, the Weldplast S4 from Leister stands out as a game-changing solution for plastic welding in Saudi Arabia. Whether you’re working on aquaculture projects or fabricating robust plastic tanks, this extruder delivers unmatched performance.
What makes the Weldplast S4 a must-have for construction professionals in Riyadh and Jeddah? Let’s dive into its standout features:
- Dual Design Variants: The Weldplast S4 is available in two specialized designs to suit your specific needs. For equipment and container construction, it features a lateral hot air nozzle, while the civil engineering variant comes with a top-mounted pre-heating nozzle. This adaptability ensures optimal results across diverse applications, from boat repair to waterproofing reservoirs in the Kingdom of Saudi Arabia.
- Versatile Welding Wire Compatibility: Depending on the chosen variant, the Weldplast S4 can process welding wire with cross-sections of 3mm and 4mm (0.12in and 0.16in) or 4mm and 5mm (0.16in and 0.20in). This flexibility allows users to tackle a wide range of projects with precision and efficiency, making it ideal for both large-scale industrial jobs and smaller custom tasks.
- High-Powered Blower for Superior Pre-Heating: Equipped with a brushless blower, this extruder ensures consistent and powerful airflow, delivering excellent pre-heating performance. This feature is critical for achieving high-quality welds, especially in demanding environments like aquaculture construction or plastic tank fabrication in Saudi Arabia.
- Customizable Welding Shoes and Angle Adapter: The Weldplast S4 offers various welding shoes and an optional angle adapter, giving users the ability to customize their setup for specific welding requirements. These accessories enhance control and precision, ensuring seamless welds even in challenging positions or tight spaces.
Ideal Use Cases for the Weldplast S4
The Weldplast S4 excels in a variety of scenarios that demand reliable and durable plastic welding solutions:
- Aquaculture Construction and Repair: From building fish farms to repairing damaged structures, the Weldplast S4 provides the durability and precision needed to withstand harsh aquatic environments.
- Boat Construction and Maintenance: Perfect for professionals in Saudi Arabia’s marine industry, this extruder ensures strong, long-lasting welds for boats and other watercraft.
- Plastic Tank Fabrication: Whether you’re constructing storage tanks for industrial use or waterproofing reservoirs, the Weldplast S4 guarantees leak-proof results.
- Waterproofing Canals and Reservoirs: Essential for civil engineering projects in Riyadh and Jeddah, this tool ensures watertight seals that stand the test of time.
With its innovative design, versatile functionality, and unwavering reliability, the Weldplast S4 by Leister is the go-to extruder for construction professionals in Saudi Arabia. Whether you’re working on precast construction accessories or handling complex geosynthetic applications, this product proves itself as a trusted partner in delivering high-quality results.
Support and Services for Weldplast S4 from Global Source
At Global Source, we are committed to providing professionals in Riyadh and Jeddah with the highest quality products and services. Our partnership with Leister ensures that you receive cutting-edge welding solutions backed by over 70 years of expertise. Additionally, we offer:
- Comprehensive maintenance and repair services for Weldplast S4 using original spare parts.
- Customized training sessions for Leister machines, available at our offices or your location.
- Local support and quick delivery options to keep your projects on track.
Get Your Weldplast S4 Today!
Don’t miss out on the opportunity to elevate your welding capabilities. Stock is moving fast at our Riyadh and Jeddah locations! Contact Global Source today to order your Weldplast S4 and experience the difference quality makes in your projects.

Sunday - Thursady
08:00 AM - 06:00 PM
Get personalized quote tailored to your needs on WhatsApp
Technical Data
-
Article116.948
-
Voltage230 V
-
Frequency50/60 Hz
-
Power3680 W
-
Welding Rodø 3–4 mm / 0.12–0.16 in
-
Material Output ø 3 mm1.5 – 2.2 kg/h
-
Material Output ø 4 mm2.2 – 3.8 kg/h
-
Welding MaterialsHDPE; LDPE; LLDPE; PP
-
Weldable Sheet/Membrane Thickness15 – 25 mm
-
Air GuideExternal
-
Screw HeatingCoil Heater
-
Air Temperature ControlClosed Loop
-
LQSNo
-
DisplayYes
-
Brushless Blower MotorYes
-
Brushless Drive MotorNo
-
LED Working LightNo
-
Length560 mm
-
Width110 mm
-
Height300 mm
-
Weight8.7 kg
-
Power Cable Length5 m
-
PlugEU, 3 Poles, 16A
-
Noise Emission Level85 dB (A)
-
ApprovalsCB Certification; CE; UKCA
-
Protection ClassI
-
Country Of OriginSwitzerland
Highlights
Extremely Powerful, Handheld Extruder

Multifunction handle
Variable
Locking knob and wheel adjustment to modify the output grip.

Various welding shoes
Versatile
The various welding shoes allow different weld forms, such as fillet welds, corner welds, X welds, V welds and overlap welds.

Strong blower
Powerful
The extruder’s brushless blower allows for excellent pre-heating.
Applications
Nearly Limitless





Leister: A Legacy of Innovation in Plastic Welding Technology
Leister, a Swiss company with a rich history dating back to 1949, has established itself as a global market leader in plastic welding and process heat technologies. Renowned for their commitment to innovation and quality, Leister’s products have become the benchmark for industries requiring durable and efficient solutions. From roofing and civil engineering to tunneling and plastic fabrication, Leister’s tools are integral to various applications that demand precision and reliability.
Leister’s product portfolio is extensive, featuring hot-air hand tools, extruders, welding machines, and a wide array of accessories. These products cater to both DIY enthusiasts and industrial professionals, ensuring that every need is met with the highest standards of performance. Additionally, Leister Technologies AG extends its reach through the WELDY brand and private labeling options, further solidifying its presence in the global market.
With over 70 years of expertise, Leister continues to push the boundaries of technology, offering solutions that incorporate hot air, laser, and infrared technologies. Their unwavering dedication to research and development enables them to provide tailored solutions for diverse industrial requirements. This commitment to innovation, coupled with a global network of over 80 distributors, ensures that Leister remains at the forefront of the plastic welding and process heat industries.
Global Source is proud to partner with Leister, carefully curating their top-tier products to meet the specific needs of construction professionals in Saudi Arabia. By selecting only the best from Leister’s range, Global Source ensures that clients have access to reliable, efficient, and innovative solutions that enhance their projects and operations.
Construction Insights and Innovations
Stay Informed, Stay Ahead
Discover a wealth of knowledge designed for construction professionals navigating the dynamic landscape of Saudi Arabia. Our blog features articles that delve into the latest trends, tips, and innovations, covering everything from best practices in pipe welding to the advantages of Leister plastic welding solutions. Gain valuable insights that empower contractors, engineers, and builders to enhance their skills and optimize their projects. Join a community of forward-thinking professionals and elevate your expertise with every read.
Transform Your Flooring Projects with the UNIFLOOR 500 from Leister
Maximize your flooring efficiency with the UNIFLOOR 500. Enjoy eco-friendly operation and easy transport for all your projects.
Unleashing the Power of Precision: The Leister COMET 700 Hot Wedge Welding Machine
Invest in the COMET 700 for high-quality welds and efficient operations. Perfect for landfills, ponds, and aquaculture projects.
10 Compelling Reasons to Choose SHOXX Diamond Tools for Your Construction Projects in Saudi Arabia
Learn 10 compelling reasons to choose SHOXX diamond tools. Experience superior performance and safety for all your construction needs.
Understanding the Impact of New ASTM Standards on Geomembrane Welding in Saudi Arabia
Meet the latest ASTM standards in geomembrane welding with Leister equipment. Ensure quality and compliance with Global Source.
Unleashing Power and Precision: The WELDPLAST 600 from Leister
The WELDPLAST 600 offers powerful performance and user-friendly features for construction professionals. Elevate your welding projects today!
Achieve Seamless Perfection: The UNIDRIVE 505 Revolutionises Pool Membrane Welding
Upgrade your pool building process with the UNIDRIVE 505. Enjoy time savings and superior seam quality for every project.
Mastering Tarpaulin Welding: Discover the UNIPLAN 500 from Leister
Explore the advantages of the UNIPLAN 500 for tarpaulin welding. Experience seamless operation and expert support from Global Source.
Unlocking Efficiency: The TRIAC AT Hot Air Hand Tool for Plastic Welding Professionals
Transform your construction projects with the TRIAC AT. Experience durability, safety, and energy efficiency with Global Source.