Weld-on hooks provide a dedicated, non-removable pick point. Because the connection is permanent and lacks pins or shackles, it is the industry standard choice for environments with heavy vibration or repetitive shock loading.
"Grade 80" refers to the material strength of the hook — a heat-treated alloy steel (commonly 20MnV or 35CrMo-type alloys) with a minimum tensile strength around 800 N/mm² (roughly 116,000 psi), giving it a strength-to-weight ratio well above standard Grade 43 or Grade 70 carbon steel components. This is the same grade used for Grade 80 chain, making them perfect partners in mixed rigging systems.
The "weld-on" part means the hook has no bolt, pin, or shank. Instead, it features flat lugs or a base plate designed specifically to be fillet-welded onto a host structure, such as an excavator bucket, a mobile crane frame, or a custom lifting beam.
Grade 80 weld-on hooks are forged from alloy steel, quenched and tempered to achieve their rated strength, and typically 100% magnetic-particle (magnaflux) crack-tested before shipping. Standard features include:
Confirm the hook is manufactured and tested against recognized standards:
Look for traceability — reputable manufacturers stamp the WLL directly onto each hook.
The weld is the single point of failure. Follow these critical guidelines:
Selecting a weld-on hook comes down to matching WLL to your actual application load with an appropriate margin (not just picking the closest ton rating). Confirm the maximum load weight, add the appropriate design factor (commonly 4:1 or 5:1), and verify the hook's throat and dimensions clear your intended rigging hardware. H-Lift's Grade 80 WOH-type hook follows this design logic, offered across six standard sizes.
| Item No. | WLL (ton) | Weight (kg) | Product Code |
|---|---|---|---|
| 8-WOH-01 | 1 | 0.49 | 502030001 |
| 8-WOH-02 | 2 | 0.87 | 502030002 |
| 8-WOH-03 | 3 | 1.13 | 502030003 |
| 8-WOH-05 | 5 | 2.50 | 502030005 |
| 8-WOH-08 | 8 | 3.26 | 502030008 |
| 8-WOH-10 | 10 | 5.20 | 502030010 |
