DIA OF CROWN SHACKLESInformation
DEPENDING ON QUALITY AND SIZE OF THE CHAIN
( Diameter of crown shackle may change if its quality is upgrade: )
( Material quality of crown shackle is similar to grade 2 of chain )
Chain diameter
mm.
Diameter
Crow shackle
Quality chain Crow shackle
Grade-2
Grade-3
ORQ
ORQ+10%
ORQ+20%
API
R 3
R 3S
R 4
R 4S
R 5

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