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Choose compliant hooks

• Must comply with standards such as ASME B30.10 (USA), ISO 2415 (International) or GB/T 10051 (China).

• Check the hook nameplate to confirm the rated load (WLL) , manufacturer, material and other information.

• It is prohibited to use cast iron hooks or hooks repaired by welding .

Correct Installation

• When the hook is connected to a wire rope, chain, etc., suitable pins and nuts must be used , and anti-loosening measures (such as cotter pins, locking washers) must be ensured.

• The hook should be able to rotate freely to avoid kinking of the wire rope.

• Install an anti-unhooking device (safety latch) unless exempted under special working conditions.

Pre-operation inspection

• Daily checks (mandatory for operators):

  • Check the hook for cracks, deformation, and wear .

  • Confirm whether the anti-unhooking device is flexible and reliable .

  • Check whether the wire rope/chain is intact and has no broken wires or deformation.

• If any problem is found, stop using it immediately and report it for repair or replacement.

Correctly mount the payload

• Oblique pulling and lateral force are prohibited , and vertical lifting is required.

• Make sure the load has a stable center of gravity and avoids shaking or rotating.

• Use appropriate lifting straps/rigging and avoid hanging directly on sharp objects.

Overloading is strictly prohibited

• The rated load (WLL) must not be exceeded and the dynamic load must take into account the impact factor (usually × 1.25).

• When multiple hooks are working together, the load distribution needs to be calculated to avoid overloading a single hook.

Smooth operation

• Avoid sudden stops or releases when lifting, lowering or moving to prevent impact loads.

• The operator must not leave the control console when the load is suspended.

Dangerous operations are prohibited

• No personnel are allowed to stay under the hook or load .

• It is prohibited to drag or hit objects with the hook .

• It is prohibited to modify or weld the hook without authorization .

Regular maintenance

• Lubricate the hook bearings and pins weekly to ensure smooth rotation.

• NDT testing (magnetic particle/ultrasonic) is carried out by professionals every 3 months .

• 200% WLL static load test is performed annually (ASME B30.10 requirement).

Scrap Standard

• Cracks (any visible cracks, regardless of size).

• The hook mouth is deformed by more than 10% (e.g. the original opening was 50mm, but now it is greater than 55mm).

• Hook tip wear results in a cross-sectional loss of ≥10% .

• Threads are damaged or severely corroded .

Emergency handling

• The load is swaying  → lower slowly and adjust the balance.

• The hook is stuck  → Stop operation, check the cause, and do not force lifting.

• Wire rope/chain breakage  → Emergency stop and evacuate the danger area.

Accident prevention measures

• Operators must be certified before they can take up their posts (such as OSHA certification, domestic special operations certificate).

• Set up a warning area and non-operating personnel are not allowed to enter.

• Stop operations in case of bad weather (strong winds, heavy rain) .

Strictly follow the inspection system (daily visual inspection + regular professional inspection).

Standardize operation (overloading, oblique pulling, and impact loads are prohibited).

Scrap unqualified hooks in time to avoid accidents.

Comply with local regulations (such as OSHA, CE, GB standards).

Choose compliant hooks

• Must comply with standards such as ASME B30.10 (USA), ISO 2415 (International) or GB/T 10051 (China).

• Check the hook nameplate to confirm the rated load (WLL) , manufacturer, material and other information.

• It is prohibited to use cast iron hooks or hooks repaired by welding .

Correct Installation

• When the hook is connected to a wire rope, chain, etc., suitable pins and nuts must be used , and anti-loosening measures (such as cotter pins, locking washers) must be ensured.

• The hook should be able to rotate freely to avoid kinking of the wire rope.

• Install an anti-unhooking device (safety latch) unless exempted under special working conditions.

Pre-operation inspection

• Daily checks (mandatory for operators):

  • Check the hook for cracks, deformation, and wear .

  • Confirm whether the anti-unhooking device is flexible and reliable .

  • Check whether the wire rope/chain is intact and has no broken wires or deformation.

• If any problem is found, stop using it immediately and report it for repair or replacement.

Correctly mount the payload

• Oblique pulling and lateral force are prohibited , and vertical lifting is required.

• Make sure the load has a stable center of gravity and avoids shaking or rotating.

• Use appropriate lifting straps/rigging and avoid hanging directly on sharp objects.

Overloading is strictly prohibited

• The rated load (WLL) must not be exceeded and the dynamic load must take into account the impact factor (usually × 1.25).

• When multiple hooks are working together, the load distribution needs to be calculated to avoid overloading a single hook.

Smooth operation

• Avoid sudden stops or releases when lifting, lowering or moving to prevent impact loads.

• The operator must not leave the control console when the load is suspended.

Dangerous operations are prohibited

• No personnel are allowed to stay under the hook or load .

• It is prohibited to drag or hit objects with the hook .

• It is prohibited to modify or weld the hook without authorization .

Regular maintenance

• Lubricate the hook bearings and pins weekly to ensure smooth rotation.

• NDT testing (magnetic particle/ultrasonic) is carried out by professionals every 3 months .

• 200% WLL static load test is performed annually (ASME B30.10 requirement).

Scrap Standard

• Cracks (any visible cracks, regardless of size).

• The hook mouth is deformed by more than 10% (e.g. the original opening was 50mm, but now it is greater than 55mm).

• Hook tip wear results in a cross-sectional loss of ≥10% .

• Threads are damaged or severely corroded .

Emergency handling

• The load is swaying  → lower slowly and adjust the balance.

• The hook is stuck  → Stop operation, check the cause, and do not force lifting.

• Wire rope/chain breakage  → Emergency stop and evacuate the danger area.

Accident prevention measures

• Operators must be certified before they can take up their posts (such as OSHA certification, domestic special operations certificate).

• Set up a warning area and non-operating personnel are not allowed to enter.

• Stop operations in case of bad weather (strong winds, heavy rain) .

Strictly follow the inspection system (daily visual inspection + regular professional inspection).

Standardize operation (overloading, oblique pulling, and impact loads are prohibited).

Scrap unqualified hooks in time to avoid accidents.

Comply with local regulations (such as OSHA, CE, GB standards).