1.80grade 2.3ton breaking force test 3.20Mn2 material 1.Application: hanging chain, lifting chain hoist, lifting beam2.Material: high quality alloy steel3.Surface: polishing, blackening, dipping paint, painting, hanging plastic, hot dip galvanizing, plating, Dacromet4.Manufacturing standards: ISO, DIN, BS, JIS, GB *5.Strength: level 100, level 80, level 70, level 63, level 50, level 40 *6. ...