B&B Sumner Hi Heavy Duty Fold-A-Jack Pipe Chain Vice Head - 3900PCV Model 722 Lincoln Electric engineered the K4021-1

Lincoln Electric engineered the K4021-1 with a cone-shaped chipping point on one end for tight-corner and root bead access

Recommend Harris water-soluble plumbing flux (ASTM B813) for copper and brass plumbing applications and Harris Stay Clean liquid soldering flux for steel or other ferrous metals

flat/horizontal electrode for high deposition rates without specified CVN impact toughness

Lincore 55-G for sliding wear

B&B Sumner Hi Heavy Duty Fold-A-Jack Pipe Chain Vice Head - 3900PCV Model 722 Lincoln Electric engineered the K4021-1Old B&B Part Number 90033 The B&B SUMNER Hi Heavy Duty Fold A Jack with Pipe Chain Vice Head turns your pipe stand into a secure work station for cutting, threading, and repair tasks. The integrated chain vice head grips pipe firmly, allowing you to perform aggressive operations while the folding leg base provides strong, stable support. This configuration is perfect for field crews and shops that need a portable vise and stand combination for day to