... Anchor Chain 2. Diameter:12.5-120mm 3. Grade U1, U2, U3 4. CCS/ABS/DNV/LR/BV/GL ... Marine Stud Link and Open Link Anchor Chain:Grade U1 U2 U3 anchor chain with certificate ABS,BV,CCS, ... YearsConditionChain-making Machines: No3, 5, 6,7,8,9,1193AcceptableAutomatic Heat Treatment Furnace33AcceptableShot Blasting Machine23AcceptableChain Welding Machine103Acceptable300T Forging Press23AcceptableKinds ...