High strength Round Link Chain Application: Supporting chain, block chain for hoist, hanging beamMaterial: High quality alloy steelSurface: Polished, black, dipping lacquer, spraying painted, hang shaped, hot dip galvanized, electroplated, Dacroment coated.Manufacture standard: ISO, DIN, BS, JIS, GB.Strength grade: Grade 100, Grade 80, Grade 70, Grade 63, Grade 50, Grade 40.Safety assurance: ...