Galvanized steel

Specifications
Scope of specifications | |||
---|---|---|---|
Thickness (BMT)(mm) | Scope of width(mm) | Weight of zinc-coating (two-sided)(g/㎡) | Remarks |
≥0.25~0.29 | 20~1300 | 80 | customised to the specifications of our customers |
≥0.29~0.35 | 20~1300 | 80 | |
≥0.35~0.40 | 20~1300 | 80 | |
≥0.40~0.60 | 20~1300 | 80 | |
≥0.60~1.50 | 20~1300 | 80 |
Dimensions and tolerance (refer to JIS G 3302-2019)
Thickness and Width Tolerance | ||
---|---|---|
Nominal thickness (mm) | Thickness tolerance (mm) | Width tolerance (mm) |
≤0.40 | ±0.05 | 0~+7 |
>0.40≤0.60 | ±0.06 | 0~+7 |
>0.60≤0.80 | ±0.07 | 0~+7 |
>0.80≤1.00 | ±0.07 | 0~+7 |
>1.00≤1.20 | ±0.08 | 0~+7 |
>1.20≤1.60 | ±0.09 | 0~+7 |
>1.60≤2.00 | ±0.11 | 0~+7 |

Quality Standard:
Standard | GB/T 2518-2008 | Q/BQB 420-2009 | EN 10327-2004 | JISG3302-2010 | ASTMA653M | Quality Type |
---|---|---|---|---|---|---|
EN 10326-2004 | ||||||
Grade | DX51D+Z | DC51D+Z | DX51D+Z | SGCC | CS Type C | CQ |
DX52D+Z | DC52D+Z | DX52D+Z | SGCD1 | CS Type A,B | DQ | |
DX53D+Z | DC53D+Z | DX53D+Z | SGCD2 | FS Type A,B | DDQ | |
S250GD+Z | S250GD+Z | S250GD+Z | SGC340 | SS 255 | HSLA |
Description of finished products:
Item: Hot Dip Galvanized Steel Sheet in Coil
Grade:SGCC、SGCD2、DX51D、DX53D or equivalent
Spangle: Normal spangle or zero spangle
Thickness & Width:(0.25mm~1.5mm)×(20~1300mm)
Weight of zinc-coating:30~300g/m2(GI, two-sided)
Type of zinc-coating:GI
Environmental passivation:10-50mg/㎡
Anti-finger print:0.5-2.0μm(dry-film)
Oiling:0.1-2.0g/㎡(one-sided)
Coil Inner-Diameter:ф508mm
Coil outer-Diameter:ф900mm~ф2000mm
Coil weight:≤28t
Raw Material:
Name:Cold Rolled hard Coils
Grade:SPCC-1B/D、SPCD-1B/D、SPCEN-1B/D
Thickness & Width:(0.25mm~1.5mm)×(800~1300mm)
Coil Inner-Diameter:ф508mm、ф610mm
Coil outer-Diameter:ф900mm~ф2200mm
Coil weight:≤28t
Application:Base material of Pre-painted/color coated steel coil, Case, Cabinet, LED backplane, Structural components of LCD TV, Toaster, etc.>
Product grade,properties and surface quality grade
Product grade and properties(Refer to JISG 3302-2019) | |||||||
---|---|---|---|---|---|---|---|
Product grade | Yield strength (mpa) (≥) | Tensile strength (mpa) (≥) | Elogation after cutting a80(%)(≥) | Surface quality grade | |||
Nominal thickness(Abbr. “T”, mm) | |||||||
0.25 ≤ T < 0.4 | 0.4 ≤ T < 0.6 | 0.6 ≤ T < 1.0 | 1.0 ≤ T < 1.5 | ||||
SGCC | 205 above | 270 above | – | – | – | – | FA、FB |
SGCD1 | – | 270 above | – | 34 above | 36 above | 37 above | FA、FB、FC |
SGCD2 | – | 270 above | – | 36 above | 38 above | 39 above | FA、FB、FC |
SGC340 | 245 above | 340 above | 20 above | 20 above | 20 above | 20 above | FA |
SGC400 | 295 above | 400 above | 18 above | 18 above | 18 above | 18 above | FA |
SGC440 | 335 above | 440 above | 18 above | 18 above | 18 above | 18 above | FA |
Surface quality grade instructions | ||
---|---|---|
Name | Code | Instructions |
Ordinary surface finishing | FA | Normal request on the skinpass surface |
Higher surface finishing | FB | Higher quality request on the skinpass surface |
Superior surface finishing | FC | Superior quality request on the skinpass surface |
Surface Treatment | ||
---|---|---|
Name | Code | Instructions |
Chrome free | C5 | This surface treatment could reduce the white rust on the surface with further limted harmful hexavalent chromium material. |
Chrome free & anti- finger print | A | This surface treatment could reduce the white rust on the surface with Anti-finger print film. |
Oiling | O | This surface treatment could reduce the white rust on the surface with antirust oil. |
Non- treatment | U | This surface is without any surface treatment. |
Weight of zinc-coating (G/M2) | Zinc-coating code | ||||
---|---|---|---|---|---|
China Standard | Bao Steel Standard | EU Standard | Japan Standard | USA Standard | |
≥30 | – | – | – | Z001 (G01) | |
≥60 | Z60 | – | Z06 | – | |
≥80 | Z80 | 40/40 | – | Z08 | – |
≥90 | – | – | – | – | Z90 (G30) |
≥100 | Z100 | 50/50 | Z100 | Z10 | – |
≥120 | Z120 | – | Z12 | Z120 (G40) | |
≥140 | – | 70/70 | Z140 | Z14 | – |
≥150 | Z150 | – | – | – | |
≥180 | Z180 | – | Z18 | Z180 (G60) | |
≥200 | Z200 | 100/100 | Z200 | Z20 | – |
≥220 | Z220 | – | Z22 | – | |
≥225 | – | Z225 | – | – | |
≥250 | Z250 | 125/125 | – | Z25 | – |
≥275 | Z275 | 140/140 | Z275 | Z27 | Z275 (G90) |
Production and design capacity of galvanizing line | |
---|---|
Raw material parameters | 0.25 – 1.5mm x 800 – 1300mm |
Finished products parameters | 0.25 – 1.5mm x 800 – 1300mm |
