The DongCheng HD071602 7-Inch Curved Jaw Locking Plier is engineered for secure clamping, twisting, extracting, and holding round, flat, and irregular workpieces. Featuring deep curved serrated jaws with an opening capacity of 41±3mm, this vice-grip locking plier provides maximum points of contact to lock tightly onto pipes, bolts, and sheet metal.

Constructed with heat-treated jaws hardened to HRC 38°–48°, it ensures exceptional grip strength and wear resistance under high mechanical pressure. The entire body is treated with a corrosion-resistant nickel-plated finish that protects against rust, moisture, and workshop debris. Equipped with an adjustable thumb screw to regulate clamping force and a guarded quick-release trigger, it delivers rapid, secure locking and controlled unlocking.

Key Features

• Curved Jaw Geometry: Delivers high clamping pressure on rounded pipes, nuts, and irregular fasteners with an opening size of 41±3mm.
• Induction-Treated Hardness: High-frequency hardened jaws rated at HRC 38°–48° resist tooth wear and slip.
• Corrosion-Resistant Nickel Plating: Full nickel-plated exterior shields against corrosion, rust, and workshop abrasion.
• Micro-Adjusting Screw: Tail-end knurled screw allows precise pressure adjustment and locking depth customization.
• Guarded Release Lever: Classic protected trigger mechanism enables fast, smooth unlocking without accidental snap-back.

Applications

• Clamping metal sheets, plates, and pipes during welding and fabrication
• Extracting stripped, rounded, or rusted bolts, studs, and screws
• Plumbing repairs, pipe holding, and fitting installations
• Automotive mechanical work, bracket clamping, and exhaust repairs
• General maintenance, metalworking, and workshop utility clamping

Technical Specifications

Size/Model-wise Table