精巧技研 Company Profile

Weldnut, the pioneer of nut welding.

Seiko Giken, as a pioneer in nut welding, responds to a wide range of customer needs, from the introduction of spot welding machines, arc welding machines, and welding robots to the sale of weld nuts (waterproof nuts, pilot nuts, hex nuts, flanged nuts), welding bolts, and low-cost Chinese welding wires. Additionally, our developed nut checker reduces welding defects with its unique mechanism, ensuring high-quality welding.