Second-hand market evaluation and purchase suggestions for crane hooks
Second-hand crane hook market evaluation and purchase guide
When purchasing crane hooks in the second-hand market, you need to focus on factors such as safety, service life, and compliance to avoid safety accidents caused by purchasing inferior or scrapped products at low prices. The following are detailed evaluation methods and purchase recommendations.
1. Legality assessment of second-hand hooks
(1) Check manufacturing qualifications and certification
-
Manufacturer information : Confirm whether the hook is from a regular manufacturer (such as Crosby, RUD, G-80 standard brands).
-
Certification marks : Check whether there are certifications such as CE, ASME B30.10, ISO 9001 , etc.
-
Factory nameplate : Check the rated load (WLL), production date, and serial number on the hook to ensure that the information is clear and traceable.
(2) Verify usage history
-
Whether it comes from the formal scrapping process : Some second-hand hooks may come from mandatory scrapping equipment, and it is necessary to confirm whether they have exceeded their service life.
-
Original use environment : If it comes from corrosive environments such as chemical industry and ocean, additional inspection of internal damage is required.
2. Key quality inspection items
(1) Appearance inspection
| Check items | Eligibility criteria | Scrap Standard (Not Available for Purchase) |
|---|---|---|
| Surface cracks | No visible cracks | Any cracks (need to be confirmed by magnetic particle inspection) |
| Hook deformation | Opening degree ≤ 10% of original size | Opening degree>15% or obvious bending |
| Wear | Wear ≤ 5% of original size | Key parts (such as threads and hook tips) are severely worn |
| Corrosion | Minor rust can be repaired | Deep rust or pitting affects structural strength |
(2) Functional testing
-
Locking device (if any): ensure that the spring and the card plate can close normally without jamming.
-
Rotational flexibility : The hook should be able to rotate freely without abnormal noise or jamming.
-
Load test (if conditions permit): Perform a static load test at 1.25 times the rated load to observe whether there is deformation.
(3) Nondestructive testing (NDT) recommendations
-
Magnetic particle testing (MT) : Detect surface and near-surface cracks (especially hook neck and threaded areas).
-
Ultrasonic Testing (UT) : Evaluate internal defects (such as casting pores, fatigue cracks).
3. Market conditions and price reference
| Hook Type | New price (reference) | Second-hand reasonable price (depending on condition) | High-risk, low-price trap |
|---|---|---|---|
| 5 ton standard hook | ¥3,000-5,000 | ¥800-2,000 | ＜¥500（may be scrapped） |
| 10 ton swivel hook | ¥8,000-12,000 | ¥3,000-6,000 | <¥2,000 (severe wear and tear) |
| Anti-unhooking hook | ¥6,000-10,000 | ¥2,500-5,000 | <¥1,500 (Latch failure) |
Note : The price is affected by the brand, years of use, and test report. Be cautious when purchasing hooks without test certificates.
4. Purchase suggestions and pitfall avoidance guide
(1) Recommended purchasing scenarios
✅Equipment upgrade and elimination : For example, the factory replaces the new crane, and the original hook is well maintained.
✅Attached test report : Provide a recent NDT report or load test record.
✅Well -known brand second-hand parts : Such as Crosby, RUD, etc., the quality is relatively reliable.
(2) Situations where purchase is not recommended
❌No nameplate or unclear information : Unable to confirm rated load and production date.
❌From extreme environments (such as shipping, chemical industry): High risk of internal corrosion.
❌Price is much lower than the market price : It may be a refurbished scrap product.
(3) Transaction precautions
-
Trial installation test is required : Install it on the crane for no-load and light-load tests.
-
Sign a quality agreement : clearly state the return terms and allow returns and exchanges if hidden cracks are found.
-
Ask for the original factory manual (if available): to learn about the maintenance history and maximum load.
5. Renovation and reuse suggestions
If the second-hand hook is in good condition but has some cosmetic problems, you may consider:
-
Sandblasting rust removal + anti-corrosion coating (such as hot-dip galvanizing or epoxy coating).
-
Replace bearings/pins : restore rotational flexibility.
-
Re-heat treatment (specialist manufacturers only): repair minor deformations.
Note : Load testing and NDT inspection must be repeated after refurbishment.
Summarize
When purchasing second-hand hooks , the principle of "safety > price" should be followed. Products with test certificates, reliable brands and good quality should be given priority . For high-risk scenarios (such as frequent heavy loads and high-altitude operations), it is recommended to purchase new hooks directly. Be sure to keep the receipts during transactions to avoid legal disputes.
Second-hand crane hook market evaluation and purchase guide
When purchasing crane hooks in the second-hand market, you need to focus on factors such as safety, service life, and compliance to avoid safety accidents caused by purchasing inferior or scrapped products at low prices. The following are detailed evaluation methods and purchase recommendations.
1. Legality assessment of second-hand hooks
(1) Check manufacturing qualifications and certification
-
Manufacturer information : Confirm whether the hook is from a regular manufacturer (such as Crosby, RUD, G-80 standard brands).
-
Certification marks : Check whether there are certifications such as CE, ASME B30.10, ISO 9001 , etc.
-
Factory nameplate : Check the rated load (WLL), production date, and serial number on the hook to ensure that the information is clear and traceable.
(2) Verify usage history
-
Whether it comes from the formal scrapping process : Some second-hand hooks may come from mandatory scrapping equipment, and it is necessary to confirm whether they have exceeded their service life.
-
Original use environment : If it comes from corrosive environments such as chemical industry and ocean, additional inspection of internal damage is required.
2. Key quality inspection items
(1) Appearance inspection
| Check items | Eligibility criteria | Scrap Standard (Not Available for Purchase) |
|---|---|---|
| Surface cracks | No visible cracks | Any cracks (need to be confirmed by magnetic particle inspection) |
| Hook deformation | Opening degree ≤ 10% of original size | Opening degree>15% or obvious bending |
| Wear | Wear ≤ 5% of original size | Key parts (such as threads and hook tips) are severely worn |
| Corrosion | Minor rust can be repaired | Deep rust or pitting affects structural strength |
(2) Functional testing
-
Locking device (if any): ensure that the spring and the card plate can close normally without jamming.
-
Rotational flexibility : The hook should be able to rotate freely without abnormal noise or jamming.
-
Load test (if conditions permit): Perform a static load test at 1.25 times the rated load to observe whether there is deformation.
(3) Nondestructive testing (NDT) recommendations
-
Magnetic particle testing (MT) : Detect surface and near-surface cracks (especially hook neck and threaded areas).
-
Ultrasonic Testing (UT) : Evaluate internal defects (such as casting pores, fatigue cracks).
3. Market conditions and price reference
| Hook Type | New price (reference) | Second-hand reasonable price (depending on condition) | High-risk, low-price trap |
|---|---|---|---|
| 5 ton standard hook | ¥3,000-5,000 | ¥800-2,000 | ＜¥500（may be scrapped） |
| 10 ton swivel hook | ¥8,000-12,000 | ¥3,000-6,000 | <¥2,000 (severe wear and tear) |
| Anti-unhooking hook | ¥6,000-10,000 | ¥2,500-5,000 | <¥1,500 (Latch failure) |
Note : The price is affected by the brand, years of use, and test report. Be cautious when purchasing hooks without test certificates.
4. Purchase suggestions and pitfall avoidance guide
(1) Recommended purchasing scenarios
✅Equipment upgrade and elimination : For example, the factory replaces the new crane, and the original hook is well maintained.
✅Attached test report : Provide a recent NDT report or load test record.
✅Well -known brand second-hand parts : Such as Crosby, RUD, etc., the quality is relatively reliable.
(2) Situations where purchase is not recommended
❌No nameplate or unclear information : Unable to confirm rated load and production date.
❌From extreme environments (such as shipping, chemical industry): High risk of internal corrosion.
❌Price is much lower than the market price : It may be a refurbished scrap product.
(3) Transaction precautions
-
Trial installation test is required : Install it on the crane for no-load and light-load tests.
-
Sign a quality agreement : clearly state the return terms and allow returns and exchanges if hidden cracks are found.
-
Ask for the original factory manual (if available): to learn about the maintenance history and maximum load.
5. Renovation and reuse suggestions
If the second-hand hook is in good condition but has some cosmetic problems, you may consider:
-
Sandblasting rust removal + anti-corrosion coating (such as hot-dip galvanizing or epoxy coating).
-
Replace bearings/pins : restore rotational flexibility.
-
Re-heat treatment (specialist manufacturers only): repair minor deformations.
Note : Load testing and NDT inspection must be repeated after refurbishment.
Summarize
When purchasing second-hand hooks , the principle of "safety > price" should be followed. Products with test certificates, reliable brands and good quality should be given priority . For high-risk scenarios (such as frequent heavy loads and high-altitude operations), it is recommended to purchase new hooks directly. Be sure to keep the receipts during transactions to avoid legal disputes.
Second-hand crane hook market evaluation and purchase guide
When purchasing crane hooks in the second-hand market, you need to focus on factors such as safety, service life, and compliance to avoid safety accidents caused by purchasing inferior or scrapped products at low prices. The following are detailed evaluation methods and purchase recommendations.
1. Legality assessment of second-hand hooks
(1) Check manufacturing qualifications and certification
-
Manufacturer information : Confirm whether the hook is from a regular manufacturer (such as Crosby, RUD, G-80 standard brands).
-
Certification marks : Check whether there are certifications such as CE, ASME B30.10, ISO 9001 , etc.
-
Factory nameplate : Check the rated load (WLL), production date, and serial number on the hook to ensure that the information is clear and traceable.
(2) Verify usage history
-
Whether it comes from the formal scrapping process : Some second-hand hooks may come from mandatory scrapping equipment, and it is necessary to confirm whether they have exceeded their service life.
-
Original use environment : If it comes from corrosive environments such as chemical industry and ocean, additional inspection of internal damage is required.
2. Key quality inspection items
(1) Appearance inspection
| Check items | Eligibility criteria | Scrap Standard (Not Available for Purchase) |
|---|---|---|
| Surface cracks | No visible cracks | Any cracks (need to be confirmed by magnetic particle inspection) |
| Hook deformation | Opening degree ≤ 10% of original size | Opening degree>15% or obvious bending |
| Wear | Wear ≤ 5% of original size | Key parts (such as threads and hook tips) are severely worn |
| Corrosion | Minor rust can be repaired | Deep rust or pitting affects structural strength |
(2) Functional testing
-
Locking device (if any): ensure that the spring and the card plate can close normally without jamming.
-
Rotational flexibility : The hook should be able to rotate freely without abnormal noise or jamming.
-
Load test (if conditions permit): Perform a static load test at 1.25 times the rated load to observe whether there is deformation.
(3) Nondestructive testing (NDT) recommendations
-
Magnetic particle testing (MT) : Detect surface and near-surface cracks (especially hook neck and threaded areas).
-
Ultrasonic Testing (UT) : Evaluate internal defects (such as casting pores, fatigue cracks).
3. Market conditions and price reference
| Hook Type | New price (reference) | Second-hand reasonable price (depending on condition) | High-risk, low-price trap |
|---|---|---|---|
| 5 ton standard hook | ¥3,000-5,000 | ¥800-2,000 | ＜¥500（may be scrapped） |
| 10 ton swivel hook | ¥8,000-12,000 | ¥3,000-6,000 | <¥2,000 (severe wear and tear) |
| Anti-unhooking hook | ¥6,000-10,000 | ¥2,500-5,000 | <¥1,500 (Latch failure) |
Note : The price is affected by the brand, years of use, and test report. Be cautious when purchasing hooks without test certificates.
4. Purchase suggestions and pitfall avoidance guide
(1) Recommended purchasing scenarios
✅Equipment upgrade and elimination : For example, the factory replaces the new crane, and the original hook is well maintained.
✅Attached test report : Provide a recent NDT report or load test record.
✅Well -known brand second-hand parts : Such as Crosby, RUD, etc., the quality is relatively reliable.
(2) Situations where purchase is not recommended
❌No nameplate or unclear information : Unable to confirm rated load and production date.
❌From extreme environments (such as shipping, chemical industry): High risk of internal corrosion.
❌Price is much lower than the market price : It may be a refurbished scrap product.
(3) Transaction precautions
-
Trial installation test is required : Install it on the crane for no-load and light-load tests.
-
Sign a quality agreement : clearly state the return terms and allow returns and exchanges if hidden cracks are found.
-
Ask for the original factory manual (if available): to learn about the maintenance history and maximum load.
5. Renovation and reuse suggestions
If the second-hand hook is in good condition but has some cosmetic problems, you may consider:
-
Sandblasting rust removal + anti-corrosion coating (such as hot-dip galvanizing or epoxy coating).
-
Replace bearings/pins : restore rotational flexibility.
-
Re-heat treatment (specialist manufacturers only): repair minor deformations.
Note : Load testing and NDT inspection must be repeated after refurbishment.
Summarize
When purchasing second-hand hooks , the principle of "safety > price" should be followed. Products with test certificates, reliable brands and good quality should be given priority . For high-risk scenarios (such as frequent heavy loads and high-altitude operations), it is recommended to purchase new hooks directly. Be sure to keep the receipts during transactions to avoid legal disputes.
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