Suboles Stutless Chain​Specification1. Dia.: 34mm~ 162mm 2. Gradus: R3,R3S,R4 3. Trahere Load Range: 745kN~15641kN 4. Fractio Load Range: 1065kN~22321kN 5. Material: Suboles Mooring Chain Steel 6. Certificatorium: CCS, ABS, BV. , DNV, GL, KR, LR, NK, RINA etc.