Chrome Vanadium Steel Round-mouth Bolt Cutters

BOSI's 10-inch Chrome Vanadium Steel Round-mouth Bolt Cutters feature thickened jaws forged from chrome vanadium steel (Cr-V) and heat-treated for strong clamping. The jaws and handles are high-frequency welded for a secure connection and even stronger clamping. Maximum opening is 51mm, with clamping torque over 30% higher than the standard. Dimensions are 220×65×53×11mm. Conforms to standard QB/T4062. The round-mouth design is suitable for clamping round workpieces (such as pipes and bolts) and irregularly shaped parts, preventing slippage. Widely used in applications requiring strong and stable clamping, such as pipeline installation, automotive repair, and welding fixtures.

Product process and principle

Advantages of Chromium Vanadium Steel: Chromium Vanadium Steel (Cr-V) contains chromium and vanadium elements, possessing higher strength and toughness than ordinary carbon steel, and can withstand greater clamping force within the same volume.

High frequency welding process: The clamp head and clamp handle are heated by high-frequency current and pressure welded, with high connection strength, no welding slag, and not easy to crack, ensuring overall structural stability when clamped with strong force.

Principle of torque enhancement: By thickening the cross-section of the clamp head and optimizing the position of the force arm fulcrum, the torque during clamping can be amplified. With the same hand force, a clamping torque that is more than 30% higher than that of a standard high force clamp can be obtained.

Adjustable locking mechanism: The tail adjustment screw can change the initial opening of the jaw to adapt to workpieces of different sizes. After locking, it relies on a four-bar linkage mechanism for self-locking, without the need for continuous force.

Packaging and shipping

BOSI's Chrome Vanadium Steel Round-mouth Bolt Cutters are individually secured in an inner box, 6 pieces are packed into an inner box, then into an outer carton, 36 pieces per carton (6×6 arrangement). The outer carton is made of thickened corrugated cardboard. Shipped in full cartons, by sea or air. Pallet packing and stretch film reinforcement are available for bulk orders. A packing list and warranty card are included before shipment. Please contact customer service for packaging dimensions and weight data.

FAQ

Q: What does a 30% increase in clamping torque mean? 

A: This refers to the fact that under the same hand force, the clamping force applied by the jaws of this product to the workpiece being clamped is more than 30% higher than the benchmark value specified in QB/T4062 standard, resulting in a more secure clamping.

Q: What is the difference between round-jaw bolt cutters and D-type bolt cutters? 

A: The jaws of the round-jaw pliers are arc-shaped, making them more suitable for clamping round workpieces (such as pipe fittings and bolts); the jaws of the D-type pliers are flatter, suitable for clamping flat or square materials.

Q: What pipe diameter can be clamped with a maximum opening of 51mm? 

A: Can clamp pipes or round workpieces with an outer diameter not exceeding 51mm. It is recommended to adjust the screw pre-opening according to the pipe diameter during actual use.

Q: Can the jaw teeth continue to be used after wear? 

A: Slight wear can still allow clamping, but the anti-slip effect will decrease. Replace with new pliers if wear is severe. Avoiding clamping hardened materials in daily use can extend the life of the pliers teeth.

Q: Will the high-frequency welded joints break? 

A: Not within the normal range of use. High-frequency welding has high strength, but it is forbidden to pry heavy objects with the pliers or use them excessively.