To the main body when lifting, lifting size reference appearances the sling included angle is less than 30 , must also adopt four hanging plate lifting sling load-bearing at least greater than the total weight of more than 2-fold
If the lifting body, lifting size reference outline drawing, the rope angle is less than 30, must also uses four hanging plate lifting sling, at least more than 2 times more weight bearing
To lift body, lifting the size reference chart, rope angle less than 30 , you must also use four cranes lifting, rope load is greater than the weight at least twice more than double