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RUD general inspection standard for rings

RUD rings shall be tested according to the following test standards:



Confirm screw tightening (torque can be detected if possible)

Make sure all parts of the lifting ring/bolted ring are in good condition



WLL value and manufacturer logo are clearly distinguishable



Whether the stressed parts such as suspension, support and safety lock are deformed



Whether there is mechanical damage, such as scratches, especially in strong stress areas

Whether the wear of the cross section exceeds 10%

Whether there is corrosion phenomenon

Whether there are cracks

Whether there are cracks or other damage in the welding position (welded lifting ring)



Choose the right size and length of thread and bolts of standard material

Is the thread valid and how damaged is it

After installation, the rings must rotate flexibly and smoothly

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