The DongCheng HD071603 10-Inch (220mm) Curved Jaw Locking Plier is built for high-torque mechanical clamping, heavy welding setups, and industrial maintenance. With an extended 220mm body and a jaw opening capacity of 43±3mm, this heavy-duty plier delivers high clamping force on rounded shafts, pipes, and hex fasteners.

Forged from high-grade carbon alloy steel with jaws hardened to HRC 42°–48°, it withstands extreme torsion and prevents jaw slippage. The durable nickel-plated finish provides rust protection and resists weld spatter adhesion. Featuring a classic knurled adjustment screw and a fast-acting guarded release lever, it allows quick tensioning and single-handed release.

Key Features

• High Clamping Leverage: 10" (220mm) extended body maximizes mechanical advantage and locking force.
• Hardened Curved Jaws: Jaws heat-treated to HRC 42°–48° provide a wear-resistant grip on rounded, hex, and flat stock.
• 43±3mm Opening Capacity: Accommodates a wide range of pipes, studs, and fabrication components.
• Anti-Corrosion Nickel Plating: Corrosion-resistant finish protects against rust, chemical exposure, and shop grime.
• Integrated Wire Cutter: Features a curved shearing edge at the throat of the jaws for cutting utility wires.
• Guarded Release Lever: Ensures controlled, quick release without pinching fingers.

Applications

• Welding fixture clamping, metal fabrication, and pipe alignment
• Loosening seized, rusted, and stripped high-torque bolts and pipes
• Automotive chassis, exhaust pipe, and mechanical heavy repair
• Plumbing work, valve turning, and structural metal clamping
• Workshop maintenance and heavy industrial assembly tasks

Technical Specifications

Size/Model-wise Table