Leister TWINNY T7 Automatic Combi-Wedge Welding Machine

The Leister TWINNY T7 is a 3450 W automatic combi-wedge geomembrane welding machine operating at speeds up to 8 m/min – 100% faster than the TWINNY T predecessor – with a brushless blower motor, LQS data recording of speed, temperature, welding pressure, and air volume via the myLeister app with GPS location tagging and Wi-Fi transmission, high power reserves under undervoltage, integrated voltage display, multifunction digital display, and Field-Kit large travel rollers – welding CSPE, EPDM, FPO, HDPE, LDPE, LLDPE, PP, PVC, and TPO geomembranes from 0.3 mm to 3 mm for pond, mine, landfill, and civil liner installation programmes.

Maximum-Speed LQS-Documented Combi-Wedge Welding for Geomembrane Liner Installation

Large geomembrane liner installation programmes on fish farming ponds, aquaculture facilities, mine tailings containment, and landfill liner systems impose two requirements on the automatic welding machine that have historically been addressed by separate specifications: maximum welding productivity – achieved through welding speed, drive power on rough terrain, and sustained performance under site power conditions – and comprehensive quality documentation – achieved through LQS parameter recording, GPS location tagging, and the digital reporting that project handover and regulatory compliance require.

The TWINNY T7 integrates both requirements into a single machine platform. Its 100% speed improvement over the TWINNY T results from a brushless blower motor that delivers higher airflow more efficiently than conventional motor technology, combined with 3450 W of heating power and a digital control architecture that maintains process parameters across the full speed range. Its LQS system records speed, temperature, welding pressure, and air volume continuously throughout each weld run, tags each data record with GPS coordinates, and transmits the data wirelessly via Wi-Fi to the myLeister app where quality documentation is generated automatically. High power reserves maintain welding quality under the undervoltage conditions of generator-powered remote sites across Oman and the GCC. And Field-Kit large travel rollers navigate the rough post-earthworks ground conditions of active pond and mine liner installation sites without machine instability or weld quality compromise. For geomembrane installation contractors and civil engineers in the Gulf region who need both productivity and documentation from the same machine, the TWINNY T7 delivers both.

TWINNY T7 Performance, Data Capability, and Site Engineering Features

• 100% Higher Welding Speed than TWINNY T: The combination of a brushless blower motor, 3450 W heating power, and digitally optimised process control enables the TWINNY T7 to weld at speeds up to 8 m/min – double the productive output rate of the predecessor TWINNY T automatic welder. On large liner installation programmes with thousands of metres of seam, this speed doubling reduces the machine-hours, operator-hours, and programme duration of the installation proportionally to the welding length completed per shift.
• Brushless Blower Motor for Low-Maintenance Continuous Operation: The brushless blower motor eliminates carbon brush wear and the associated replacement intervals, motor maintenance access requirements, and brush debris contamination risks that conventional brush motors introduce into continuous duty installation environments – enabling the TWINNY T7 to sustain productive output across multi-week large-area liner installation programmes without motor maintenance downtime interrupting the installation schedule.
• LQS Data Recording of Speed, Temperature, Welding Pressure, and Air Volume: The Leister Quality System records all four primary welding parameters continuously throughout every weld run – creating a complete, uninterrupted data record for each seam that satisfies the quality assurance documentation requirements of civil infrastructure specifications, environmental regulatory frameworks, and the project handover documentation packages that pond, mine, and landfill liner installation clients require.
• GPS Location Tagging for Weld Traceability: Each LQS data record is tagged with GPS coordinates linking the parameter history of every weld run to its verified installation position on the liner – enabling quality inspectors, project engineers, and regulatory auditors to confirm that each section of geomembrane was welded within specification at its confirmed location without relying on operator-maintained manual location records.
• Wi-Fi Transmission to the myLeister App: LQS weld data transmits wirelessly from the TWINNY T7 to the myLeister app without cable connection or manual extraction, enabling real-time quality monitoring during active installation and generating the quality documentation, parameter tables, and graphical outputs required for client submission, regulatory compliance, and project handover without post-processing effort from the installation team.
• High Power Reserves Under Undervoltage Conditions: The TWINNY T7 maintains welding quality and machine performance under undervoltage supply conditions – a practical capability for remote pond construction, mine site, and landfill liner installation in Oman and the GCC where generator-supplied power on remote project sites cannot always guarantee stable voltage throughout the working shift.
• Integrated Voltage Display: The multifunction display includes voltage monitoring, giving the operator visibility of supply voltage throughout the weld run – enabling immediate identification of voltage deviation before it reaches a level that affects welding temperature stability or machine performance, and supporting the proactive power management that generator-powered site operations require.
• Multifunction Digital Display for Process Control: The digital multifunction display provides full control and monitoring of speed, temperature, welding pressure, and air volume in a single interface – enabling the operator to configure, monitor, and adjust all primary process parameters from the operating position without requiring separate instruments or control panels during active welding.
• Short Combi-Wedge in Stainless Steel for Thin Membranes: The short combi-wedge version is configured for geomembrane thicknesses below 1.5 mm, with the combi-wedge combining hot wedge contact and hot air delivery in a single stainless steel element – providing the gentle, consistent heat transfer that thin membrane welding requires without the overheating risk that single-mode methods can introduce on thermally sensitive thin liner materials.
• Field-Kit Large Travel Rollers for Site Terrain Adaptability: Large Field-Kit travel rollers provide increased ground clearance over the rough, aggregate-covered substrate surfaces that follow earthworks completion on pond construction, mine liner preparation, and landfill cell base preparation areas – enabling the TWINNY T7 to maintain stable, consistent machine travel across the ground conditions that define active civil liner installation sites rather than the prepared surfaces that indoor-kit rollers require.
• Nine Material Compatibility Types from 0.3 mm to 3 mm: Welds CSPE, EPDM, FPO, HDPE, LDPE, LLDPE, PP, PVC, and TPO geomembranes across the full thickness range from 0.3 mm thin liner to 3 mm structural containment membrane – covering the complete material and thickness specification range encountered across pond, fish farm, mine, landfill, and civil environmental liner programmes in a single machine configuration.

LQS-Documented High-Speed Geomembrane Welding Applications in Oman and the GCC

• Aquaculture and Fish Farm Pond Liner Installation with Quality Documentation: Delivers the welding speed, Field-Kit terrain adaptability, and GPS-tagged LQS weld documentation that large-scale fish farming pond and aquaculture facility liner installation across Oman and the GCC requires – where liner area, installation programme schedule, and the quality records required for facility commissioning all benefit from the TWINNY T7’s combined productivity and documentation capability.
• Mine Containment Liner Installation with Regulatory Documentation: Provides the 100% speed improvement and LQS-documented weld parameter records required for mine tailings, heap leach pad, and process chemical containment liner installation – where environmental permit conditions mandate traceable weld quality evidence and site regulators review installation records as part of the ongoing permitting process for mine operations across the Gulf region.
• Landfill Cell Liner Installation with Project Handover Documentation: Welds primary and secondary geomembrane liner systems on landfill containment cells with GPS-tagged LQS records transmitted via Wi-Fi to the myLeister app – generating the structured, location-referenced weld quality documentation that environmental regulatory bodies and project clients require as part of the formal landfill cell acceptance and handover process.
• Large Reservoir and Civil Water Infrastructure Liner Programmes: The 100% speed improvement over the TWINNY T directly reduces the installation duration of large-area reservoir liner programmes across Oman and the GCC – while the LQS documentation provides the weld quality evidence that water authority certifiers and civil infrastructure clients require as a condition of reservoir commissioning and liner system acceptance.
• Multi-Material Geomembrane Programmes Requiring Unified LQS Documentation: The TWINNY T7 welds nine geomembrane material types within a single LQS documentation framework – enabling consistent GPS-tagged quality records across all liner zones of projects where different areas are specified in different materials, and providing project clients with a unified, machine-generated quality assurance dataset that covers the complete installed liner network.

Leister TWINNY T7 – Available Through iBuild, Authorised Leister Distributor in Oman

iBuild is an authorised Leister distributor in the Sultanate of Oman, providing geomembrane installation contractors, civil engineering teams, pond construction specialists, and mine liner installation teams with direct access to the TWINNY T7 alongside compatible combi-wedge accessories, drive rollers, and the full range of Leister geo-welding equipment. As a manufacturer-authorised technical partner, iBuild supports myLeister app configuration, LQS data management setup, GPS documentation framework alignment for project-specific QA requirements, and lifecycle support to sustain TWINNY T7 performance across large-area liner installation programmes.

For geomembrane installation contractors and civil engineering teams across Oman and the GCC who need the highest available combi-wedge welding speed, a brushless motor for low-maintenance continuous operation, and GPS-tagged LQS weld quality documentation transmitted wirelessly to the myLeister app – from a single automatic welding machine – iBuild is the authorised local source for the Leister TWINNY T7.