L | Chromic acid passivation |
Y | Oiling |
LY | Chromic acid passivation and oiling |
GZ | Finisher finishing |
Surface structure | Feature | Application |
Normal spangles(Z) | The spangles are got through condensing under common conditions after galvanizing | General purpose |
Finishing spangles(GZ) | Finishing the galvanized plates and flattening the surface spangles by finisher | Mainly as the base-plate of the color-coating plates |
Machinability | Yield strength | Tensile strength | Tensile stretch % | 180o cold bending | Machinability | Yield strength | Tensile strength | Tensile stretch% | 180o cold bending |
Common PV | — | 270-500 | — | d=0,good, without dezincification | Deep draw SC | — | 270-380 | ≥30 | d=0,good, without dezincification |
Mechanical splicing JY | — | 270-500 | — | d=0,good, without dezincification | Ultra-deep draw SC | — | 270-380 | ≥30 | d=0,good, without dezincification |
Structure JG | ≥240 | ≥370 | ≥18 | d=0,good, without dezincification | — | — | — | — |