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 |
