1.Shell material is alloy steel,strong wear-resisting, safety performance is high 2.Small volume,easy to carry HSZ-C Hoisting Manual ... short of hoisting, lifting weight usually less than 100t. 2. Shell material is high quality alloy steel, firm, wear-resisting, safety ... type crane design to ensure that the slow lifting in case of overload. Parameter Company profile RILI RIGGING CO . , LTD was ...