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
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