1. The zen used in the lifting mechanism driven by manpower is tested with 1.5 times the rated load as the inspection load.
2. The zen used for the power-driven lifting mechanism shall be tested with 2 times the rated load as the inspection load.
3. Aprè lazenyo retire nan chaj enspeksyon an, pa ta dwe gen okenn domaj evidan oswa deformation, ak ogmantasyon nan degre ouvèti pa ta dwe depase 0.25% nan gwosè orijinal la.
4. Pouzens that have passed the inspection, a mark should be printed in the low-stress area of the zen, including the rated lifting weight, factory mark or factory name, inspection mark, production number, etc.
Lazenyo ta dwe kraze lè youn nan sitiyasyon sa yo rive:
â ‘Krak;
â‘¡Seksyon danjere mete rive nan 10% nan gwosè orijinal la;
â '¢ Degre ouvèti a ogmante pa 15% konpare ak gwosè orijinal la;
④The torsion deformation of the zen body exceeds 10°;
⑤The dangerous section of the zen or the neck of the zen is plastically deformed;
⑥The zen thread is corroded;
⑦When the wear of the zen bushing reaches 50% of the original size, the bushing should be replaced;
⑧ Lè mandrin pyès lazense chire a 5% nan gwosè orijinal la, yo ta dwe ranplase mandrin la.