1. The mbedza used in the lifting mechanism driven by manpower is tested with 1.5 times the rated load as the inspection load.
2. The mbedza used for the power-driven lifting mechanism shall be tested with 2 times the rated load as the inspection load.
3. Pambuyo pambedzaamachotsedwa pantchito yoyendera, sipangakhale zolakwika kapena zowonekera, ndipo kuchuluka kwa digiri yoyamba sikuyenera kupitirira 0,25% ya kukula koyambirira.
4. Pakutimbedzas that have passed the inspection, a mark should be printed in the low-stress area of the mbedza, including the rated lifting weight, factory mark or factory name, inspection mark, production number, etc.
Pulogalamu yambedzaziyenera kuchotsedwa pakagwa chimodzi mwazinthu izi:
â ‘Mng’alu;
â‘¡Kavala kagawo kowopsa amafikira 10% ya kukula koyambirira;
â ‘¢ Digiri yoyamba kutsegula ikuwonjezeka ndi 15% poyerekeza ndi kukula koyambirira;
④The torsion deformation of the mbedza body exceeds 10°;
⑤The dangerous section of the mbedza or the neck of the mbedza is plastically deformed;
⑥The mbedza thread is corroded;
⑦When the wear of the mbedza bushing reaches 50% of the original size, the bushing should be replaced;
⑧ Pamene mandrel a chidutswachombedzayavalidwa mpaka 5% ya kukula koyambirira, mandrel iyenera kusinthidwa.