1. Stud Link Anchor Chain 2. Diameter:12.5-120mm 3. Grade ... . CCS/ABS/DNV/LR/BV/GL/NK/RINA/RS Marine Stud Link and Open Link Anchor Chain:Grade U1 U2 U3 ... certificate ABS,BV,CCS,DNV,GL,LR,RINA etc.1. Stud link Chain: 2. Studless(Open link) Anchor chain: Product Capacity ... -speed Analyzer23AcceptableProduction Flow Anchor chain and Mooring Chain Certificate: Marine Stud Link Anchor Chain