2026/9/23 - DTB-160 Vertical Medium Frequency Spot Welder for Heavy-Duty Sheet Metal Spot Welding

2026/9/23 - DTB-160 Vertical Medium Frequency Spot Welder for Heavy-Duty Sheet Metal Spot Welding

On September 23, 2026, PDKJ delivered a DTB-160 Vertical Medium Frequency Spot Welder to a sheet metal fabrication customer in Jiangsu. The equipment was configured for medium frequency spot welding of heavier sheet metal assemblies — thicker stacks, longer reaches and structural joints in daily production, where nugget strength on thicker stacks, stable electrode force, and consistent welds across long shifts are important for reliable production.

The DTB-160 vertical medium frequency spot welder assembled on its pallet, with touchscreen controller, pneumatic cylinder and MF cabinet

Application Overview

Customer Requirements and Equipment Configuration

When spot welding work moves from thin brackets into heavier sheet metal assemblies, machine requirements climb quickly: deeper reach, stronger and more stable electrode force, and a welding controller that holds the current steady as stack-ups vary. This is the range where PDKJ’s vertical medium frequency spot welders are typically specified, and where smaller bench or light-duty machines begin to run at their limits.

The customer, a sheet metal fabrication manufacturer in Jiangsu, needed a standing spot welder for medium and heavier assemblies in daily production. Joint strength on thicker stacks was the central requirement — together with the shift-long consistency that manual or lightly regulated machines struggle to maintain.

PDKJ delivered the DTB-160 vertical medium frequency spot welder: a vertical-frame machine with a pneumatic cylinder head, MF inverter control, a touchscreen welding controller and a water-cooled electrode circuit. The shipment included the matching industrial water chiller and welding accessories, crated for transport to the customer’s plant in Jiangsu.

The customer needed a welding solution that could provide:

• Strong, repeatable spot welds on medium and heavier sheet metal stacks
• Stable welding current through medium frequency inverter control
• High, consistent electrode force from a pneumatic cylinder head
• Long reach for larger assemblies on the lower arm
• Water cooling for continuous production welding
• Touchscreen controller with parameter programs per part
• Machine inspected and configured before delivery

On heavier stacks, an under-dimensioned spot welder shows its limits fast: electrode force that cannot keep the sheets in contact produces inconsistent nuggets, and current that sags during multi-weld parts leaves later joints weaker than the first. The result is assemblies whose weld quality depends on when they were welded — a variance that ends in failed pull tests and uncertain structural performance.

DTB-160 Vertical Medium Frequency Spot Welding Solution for Heavier Sheet Metal Assemblies

The DTB-160 vertical spot welder is built around production welding of heavier assemblies: a rigid vertical frame, a pneumatic cylinder that presses the electrode force down on every cycle, and a long lower arm that gives larger sheet metal parts room to sit on the machine rather than in the operator’s hands. The upright posture keeps the weld point at a comfortable height for fixture work.

The medium frequency inverter controller with touchscreen operation regulates the welding current against the setpoint and stores parameter programs per part. As electrode tips wear through a shift, the regulated current and consistent pneumatic force keep nugget formation close to specification instead of drifting with machine condition.

Before packing, the machine completed inspection and parameter setup at the PDKJ workshop, and the matching water chiller was prepared alongside it. The DTB-160 then traveled crated — wrapped in protective film and loaded with its chiller — for delivery to the Jiangsu customer.

The DTB-160 wrapped in bubble film and stretch wrap on its shipping pallet, ready for crating in the PDKJ workshop

How the Machine Solves Customer Pain Points

1. Force and Current Matched to Thicker Stacks

Heavier assemblies need more electrode force and more controlled energy than light-duty frames deliver. The DTB-160 pairs a pneumatic cylinder head with MF inverter current control, so thicker stacks close, weld and solidify under stable conditions.

2. MF Inverter Control Holds the Current at the Setpoint

Fast regulation of the welding current keeps heat input on target through a shift, so the last weld of a large assembly is as strong as the first — the consistency requirement at the heart of the customer’s specification.

3. Reach for Larger Assemblies

The long lower arm and vertical frame let bigger sheet metal parts sit on the machine with the weld point accessible, instead of forcing operators to wrestle assemblies into a cramped throat.

4. Touchscreen Controller with Part Programs

Weld schedules for different stack-ups are stored on the controller and recalled per part, so production switches between assemblies without re-developing parameters on the floor.

5. Water-Cooled Continuous Duty

The included industrial water chiller cools the electrode circuit and transformer, protecting nugget consistency and electrode life through continuous production welding.

6. Protected, Complete Delivery

Bubble wrap, foam and a reinforced wooden crate protected the machine in transit, with the chiller and accessories shipped together so installation starts the day the crate is opened.

Welding Process

The welding process can generally be organized as:

Assembly Loading on the Lower Arm → Positioning on the Fixture or Layout Marks → Cycle Initiation → Pneumatic Cylinder Applies Electrode Force → MF Inverter Delivers the Programmed Current → Hold and Nugget Formation → Electrodes Retract → Joint Inspection

Before production, welding parameters can be adjusted according to the material, workpiece structure, joint geometry, and required joint performance.

The crated DTB-160 and its water chiller loaded into the delivery truck for the customer in Jiangsu

Why Choose a DTB-160 Vertical Medium Frequency Spot Welder?

As sheet metal assemblies grow heavier, the spot welder must grow with them — in force, in reach and in current control. Machines specified too small either slow production down or produce joints whose strength cannot be guaranteed batch after batch.

The DTB-160 extends PDKJ’s vertical medium frequency range for exactly this duty. It shares its control concept with the DTB-80 vertical MF spot welder in a larger frame, and PDKJ supplies the series with chillers, tooling and accessories matched to the customer’s parts.

This machine class fits sheet metal fabricators, structural hardware and enclosure manufacturers — anywhere medium and heavier stacks must be spot welded with repeatable strength across long production runs.

Key Advantages

• Vertical MF inverter frame sized for heavier stacks
• Regulated welding current for repeatable nuggets
• High, stable pneumatic electrode force
• Long lower arm reach for larger assemblies
• Touchscreen controller with parameter programs
• Water-cooled continuous duty with included chiller
• Consistent strength from first to last weld of a part
• Pre-delivery inspection and parameter setup
• Export crating with accessories included
• Fixture-friendly posture for production welding

Potential Applications

The same welding concept can be considered for various applications, including:

• Medium and heavier sheet metal assemblies
• Structural brackets and mounting plates
• Enclosures, cabinets and machine housings
• Frame and racking joints
• Appliance and equipment sheet metal parts
• HVAC and ducting assemblies
• Fixture-based production welding
• General fabrication welding lines

Actual welding capability depends on the material, thickness, joint structure, electrode or fixture configuration, and production requirements.

From Delivery to Production

The DTB-160 completed pre-delivery checks at the PDKJ workshop — electrode alignment, air circuit, cooling and controller programs verified against the intended assemblies.

The machine was wrapped, crated and loaded with its water chiller for transport to the customer’s plant in Jiangsu.

Commissioning on arrival follows the same pattern proven across the DTB series: connect utilities, run trial welds on the customer’s parts, and fine-tune the stored programs from their pre-configured starting points.

Conclusion

The September 23 delivery demonstrates the use of the DTB-160 Vertical Medium Frequency Spot Welder for heavy-duty sheet metal spot welding at a customer in Jiangsu.

When assemblies outgrow lighter machines, a vertical medium frequency spot welder with regulated current, stable pneumatic force and water cooling keeps joint strength predictable. PDKJ ships the DTB series configured, crated and supported for production — and can validate weld quality on your parts before you commit.

PDKJ continues to provide customized laser welding and resistance welding solutions based on different materials, workpiece structures, welding requirements, and production applications.

Related Products

• DTB-80 Industrial Vertical Medium Frequency Inverter Spot Welder
• Platform Type Intermediate-Frequency Inverter Seamless Spot Welding Machine
• Spot Welding Machines
• All PDKJ Welding Machines

Contact PDKJ

Send us your part drawing or sample, and our engineers will run a welding feasibility trial on your own material and recommend the equipment configured for your application.

WhatsApp: +86 136 1279 3248

Email: pdkj101@gd-pw.com

Website: https://www.spotlaserwelding.com/contactus.html

Address: 1-2F, Building 3, Qichen Industrial Park, No. 26 Luxi 1st Road, Liaobu Town, Dongguan City, Guangdong Province, China