1, yuav tsum du thiab du, tsis muaj kab nrib pleb, cov npoo ntse thiab kub hnyiab thiab lwm yam tsis xws luag, siv cov iav magnifying thiab lwm qhov chaw tuaj yeem tshuaj xyuas.

2, shackle kom muab ob npaug rau kev nyab xeeb load raws li qhov kev xeem thauj mus kuaj. Tus pin ncej yuav tsum tsis txhob deformed mus tas li thiab tsis tuaj yeem tig tom qab loosening. Qhov ntev ntawm lub cev ntev yuav tsum tsis pub tshaj O.25% lossis O.5mm. 300 tons ntawm cov nram qab no 2 zaug ntawm kev ruaj ntseg load raws li kev xeem load mus kuaj, ntau tshaj 300 tons ntawm 1.33 npaug ntawm kev nyab xeeb load raws li ib tug kuaj load mus kuaj.

3, shackle tuaj yeem ua piv txwv kev ntseeg siab. Lub load yog ob zaug ntawm kev kuaj load. Shackle yuav tsis tawg los yog shackle yuav puas.

4, kev siv shackle ntawm kev ruaj ntseg load yog M (4) pom zoo.

5, nyob rau hauv lub pob lub cev yuav tsum tau cim nrog lub zog theem, kev ruaj ntseg load thiab lwm yam cim.