You’re picking the best welding clamps for your shop, and what separates these picks is the job they were built for. A pipe clamp won’t hold flat sheet metal well, and a tiny clip can’t stop heavy plate from moving. The right one matches your material, your table, and the force you actually need. Best overall: IRWIN VISE-GRIP 25ZR — its U-shaped jaw gives you more working space, and heat-treated alloy steel handles daily shop abuse without bending. Best for heavy fabrication: Wilton GSM40 F-Clamp — it delivers 2,660 lbs of clamping force with a drop-forged arm that resists flex under serious loads. And Best for auto body work: Pumtus…