The DongCheng HD071610 is a premium-grade 10-Inch (220mm) Curved Jaw Locking Plier forged from Chrome Vanadium (CR-V) alloy steel, engineered for industrial and automotive applications. With an advanced heat treatment delivering a hardness of HRC 45°–55°, this model provides high tensile strength, resistance to jaw deformation, and long-term durability under heavy torsional loads.

Featuring deep curved serrated jaws with an opening capacity of 43±3mm, it locks securely onto round bars, pipes, and hexagonal fittings. The exterior is finished with high-quality nickel plating to protect against corrosion, oxidation, and abrasive environments. Complete with a smooth knurled tension screw and a classic guarded release lever, it offers reliable locking performance for fabricators and mechanics.

Key Features

• Premium CR-V Construction: Forged from Chrome Vanadium steel for high strength and fatigue resistance.
• Ultra-Hard Jaws (HRC 45°–55°): Heat-treated to HRC 45°–55° for edge retention and wear resistance.
• Curved Grip Profile: Provides four-point contact on pipes, round stock, and damaged fasteners with a 43±3mm opening.
• Corrosion-Resistant Nickel Plating: Heavy-duty nickel coating resists rust, oils, and harsh workshop environments.
• Precision Pressure Adjustment: Knurled rear adjustment screw allows fine-tuning of clamping pressure and locked gap.
• Rapid Release Lever: Guarded release trigger ensures fast, controlled unlocking.

Applications

• Heavy-duty industrial welding, structural fabrication, and pipe alignment
• Heavy automotive repair, high-torque bolt extraction, and chassis clamping
• Pipeline installation, round stock securing, and hydraulic fitting tasks
• Factory maintenance, toolroom clamping, and metalworking fabrication
• Extreme-duty applications requiring CR-V strength and high jaw hardness

Technical Specifications

Size/Model-wise Table