Material: Special Quality Steel, Extra Special Quality Steel

Surface: Black Painted or Galvanised

Standard: Lastest version of ISO1704, GB/T 549, JIS F3303, GOST 228, IACS, OCIMF and API
Grade: RQ3/NVR3,RQ3S/NVR3S,RQ4/NVR4
Diameter: 34mm to 162mm
Certification : ISO9001, LR, ABS, DNV, GL, BV, NK, KR, CCS, RINA, CCS, RMRS.
link:https://www.jerimarine.com/marine-mooring-equipment/mooring-chain/offshore-anchor-chain.html