Boat Mooring Chain 1. Varieties: Grade 1, Grade 2, Grade 3, ORQ, R3, R3S, R4 stud anchor chain; nailless anchor chain; buoy chain. 2. Material grade: Anchor chain: 2/U2 grade, 3/U3 grade, Anchor chain: ORQ, R3, R3S 3. Material: 20Mn(CM490), 30Mn(CM690), U2/U3 grade from 12.5mm to 162mm; grade ORQ/R3/R3S/R4 from 58mm to 162mm 4. Length: 25m or 27.5m or as your request. 5. Surface: natural color, black paint, hot-dip galvanized 7. Relevant certificates: ABS, BV, CCS, DNV, KR, LR, GL, NK and RINA, etc. 8. Packing: wire rope binding, ton bag, wooden box 9, Shipping Port: Shanghai Port/Zhejiang Port/Qingdao Port