Regular Bright Spangle Galvanized Steel Sheet in Coils Zinc 90g Chromated DX51D S280GD Purlin usage

Regular Bright Spangle Galvanized Steel Sheet in Coils 

Baosteel galvanised sheet grade marking, code description

Surface structure: smooth: G; normal zinc flower: Z; small zinc flower: X; no zinc flower: N

Surface treatment: chrome-free passivation: C5; chrome-free passivation oiling: CO5; oiling: Y

Surface Quality: Normal Surface: FB; Higher Grade Surface: FC; Higher Grade Surface: FD

1,Non passivated material examples

Example: DC51D＋Z/90/90/N/FC/Y 1.0*1219*C

Note: For general stamping / Normal zinc layer / Single side zinc layer thickness 90g/m2 (both sides together for 180g zinc layer) / No zinc flower / Higher grade surface / Non-passivated oiling

2,Chrome-free passivation material examples

Example: DC54D＋Z/90/90/N/FC/CO5 0.8*1250*C

Note: For deep-drawing / normal zinc layer / zinc layer thickness 90g/m2 on one side (180g zinc layer on both sides together) / no zinc spangle / high grade surface / chrome-free passivation oiling

Hardness: soft (normal), hard, full hard

Zinc coating: 30-275 G /M², or on request

Zinc pattern: large zinc pattern, small zinc pattern, no zinc pattern

Surface finish: fingerprint resistant, chromate, oiled, unoiled

Spangle Situation 

Regular Spangle

A regular bright pattern produced on hot-dip galvanised steel sheets by adding certain heavy elements to the molten zinc bath.