What Are The Main Materials Of The Gravity Luffing Arm Type Davit?
Materials of main parts of gravity luffing arm type davit are specified in Table 1, and other materials whose performance is not lower than that specified in Table 1 and which have been proved to be equally applicable are allowed to be used.
Overview
Name of parts | Materials | ||
Name | Steel grade | standard number | |
Davit arm | Structural steel for ship hull | Grade B steel | GB 712-201 |
Davit frame | Carbon structural steel | Q235B | GB/T 700—2006 |
Boat fall chain | Carbon constructional quality steel | 25 | GB/T 699-1999 |
Axle | Structural alloy steel | 40Cr | GB/T 3077-1999 |
Bush | Casting aluminium bronze | ZCuAl10Fe3 | GB/T 1176—1987 |
Table 1
