Flash Butt welded Anchor Chain cables. 1. Type: Studlink Chain,which is the most popular,is used by the shipping and oil industries. 2. Size: from 12.5mm to 162mm 3. Standard: Lastest version of ISO1704, GB/T 549, JIS F3303, GOST 228, IACS, OCIMF and API 4. Certification: ISO9001, LR, ABS, DNV, GL, BV, NK, KR, CCS, RINA, CCS, RMRS... 5.Material: Special Quality Steel, Extra Special Quality Steel 6.Surface: Black Painted or Galvanised