... large marine factory Ship Anchor chain , Anchor chain for marine Ship Stud link anchor chain & studless link anchor chain Specification Diameter 12.5-84mmCategory ... 2007, IACS W18 and W22, API-2F(U.S.A), Rules of Classification Societies, GB/T 549-1996(China) and other ... (USA), CSQA(China) and QSMSCC (China).How to order anchor chain ? Chain Diameter & GradeLength: 27.5m or 25mFinish: H. D. Galvanized ...