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Weld Systems Integrators (WSI)

Resistance Welding. Solved.

Standard and Custom Resistance Welding Machinery and Equipment

Weld Systems Integrators (WSI) is a manufacturer of rugged, innovative, high-quality resistance welding machines and equipment, and integrator of robotic resistance and MIG welding cells. This includes standard and custom rocker arm spot welders, press-type spot welders, capacitor discharge welders, bench welders, seam welders, door welders, XY welders, turntable welders and multi-gun welders. Furthermore, power supplies include single-phase AC and CD, and three-phase DC and MFDC.

In addition to our standard and custom welders and welding systems, WSI stocks a large, diverse inventory of resistance welding consumables, spare parts and accessories. This includes electrodes, portable spot welding guns, controls, chillers, transformers and more. And we support our equipment with excellent customer service, training, welding lab testing and contract engineering.

WSI is stocking master distributor of TECNA Industrial Resistance Welders and Tool Balancers. TECNADirect.com (a division of WSI), stocks, sells, repairs and supports TECNA pedestal welders, portable welding guns, bench welders, tool balancers and accessories.

Factory direct from our Warrensville Heights, OHIO location, or through our distributor network, Weld Systems Integrators offers exceptional welding machinery equipment with global shipping and quick delivery.

Introducing the NEW Weld Systems Integrators Fast Rise Time MFDC Welder. The new FRT-MFDC machine is ideal for welding applications requiring short weld times and high welding current.


Looking to spend less and still receive a high quality welder? We keep an IN-STOCK inventory of USED resistance welders and equipment at our Warrensville Heights, Ohio location.

Updated:  Wednesday, March 10, 2021


Make multiple welds on a single part with our advanced multi-nut fully and semi-automated welders!

We offer a line of XY and XYZ servo resistance welders with standard size configurations. In addition, our new line of automated welders can be customized to fit unique customer application requirements.


Weld Systems Integrators is pleased to announce our next generation 12,000 Joule (12kJ) Capacitive Discharge (CD) Welder. WSI CD welders are ideal for projection welding fasteners, with standard or ring type projections, to Hot Stamped Aluminum Silicate (AlSi) coated materials, Galvanized and other coated materials.


If you have any questions following our AWS Detroit Section – March Technical Night Presentation [ Benefits of Capacitor Discharge (CD) Welding ] please give us a call at 844-WSI-WELD, +1-216-475-5629 or use our convenient CONTACT WSI webpage.

Weld Systems Integrators Resistance Welding Equipment, Machinery and Services

Purchase TECNA Welders and Tool Balancers!

TECNADirect.com is a stocking master distributor of TECNA Pedestal Welders, Portable Spot Welding Guns, Bench Welders and Accessories. Along with BALANCERSDirect.com, our dedicated Tool Balancer website, we maintain an IN-STOCK inventory of TECNA equipment at our Warrensville Heights, OH location.