1. Substrate Grades by Standard
| Designation | Standard | Character |
|---|---|---|
| DX51D | EN 10346 | Cold forming; bending and roll forming |
| SGCC | JIS G3302 | General use (trade equivalent of DX51D) |
| CGCC | GB/T 12754 | Colour-coated steel base (Chinese designation) |
The three are approximate equivalents across standards - select by the destination market and verify mechanicals on the MTC.
2. Key Parameters to Specify
Substrate: grade + thickness (typically 0.20–1.5 mm)
Zinc coating: Z60–Z275
Coating system: PE / SMP / HDP / PVDF by environment
Film: topcoat 12–25 μm; backcoat 5–10 μm; colour RAL; gloss level
Forming: T-bend (e.g. ≤3T) and hardness per the paint system
3. Applications
Roofing, wall cladding, appliance housings, purlins/profiles and corrugated sheets - where durability, colour and forming compatibility are required.
4.Dimensions
|
Commdity: |
GI,GL,PPGI, PPGL coils |
Type of coating: |
color coated |
|
Grade: |
DX51D,SGCC,CGCC |
ID coil: |
508/610mm |
|
Width: |
600--1250MM |
Coil weight: |
3-5MT per coil |
|
Zinc coating: |
Z30g-275g/m2 |
Price terms: |
FOB,CFR,CIF |
|
Thickness: |
0.12mm-1.2mm |
Terms of price: |
FOB, CIF,CFR,EXW. |
|
Payment terms: |
30%TT+70%TT or irrevocable 70%L/C at sight |
Surface treatment: |
oiling/passivation or chromium free passivation/skin pass |
|
Surface strctuce: |
zero spangle/regurlar spangle |
Package: |
properly packed for ocean freight exportation in 20''containers |
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5.Galvanized Surface Selection
|
Surface Treatment Type |
Code |
Features |
|
Chromic Acid Treatment |
C |
Good corrosion resistance, suitable for bare state |
|
Chromic Acid Treatment+Oiling |
S |
Good corrosion resistance |
|
Phosphoric Acid Treatment (Including Sealing Treatment) |
P |
Have a certain corrosion resistance, good paint performance |
|
Phosphoric Acid Treatment (Including Sealing Treatment)+Oiling |
Q |
Has a certain corrosion resistance, good paint performance, prevent rust during transportation and storage |
|
Phosphoric Acid Treatment (Excluding Sealing Treatment) |
T |
Have a certain corrosion resistance, good paint performance |
|
Phosphoric Acid Treatment (Excluding Sealing Treatment)+Oiling |
V |
Has a certain corrosion resistance, good paint performance, and prevent rust |
|
Oiling |
O |
Prevent rust during transportation and storage |
|
No Treatment |
M |
Suitable for immediate painting |
6.Packaging and Shipping
