PPGI is pre-painted galvanised steel, also known as pre-coated steel, coil coated steel, color coated steel etc., Typically with a hot dip zinc coated steel substrate.
The term is an extension of GI which is a traditional abbreviation for Galvanised Iron. Today the term GI typically refers to essentially pure zinc (>99%) continuously hot dip coated steel, as opposed to batch dip processes. PPGI refers to factory pre-painted zinc coated steel, where the steel is painted before forming, as opposed to post painting which occurs after forming.
The hot dip metallic coating process is also used to manufacture steel sheet and coil with coatings of aluminium, or alloy coatings of zinc/aluminium, zinc/iron and zinc/aluminium/magnesium which may also be factory pre-painted.
While GI may sometimes be used as a collective term for various hot dip metallic coated steels, it more precisely refers only to zinc coated steel. Similarly, PPGI may sometimes be used as a general term for a range of metallic coated steels that have been pre-painted, but more often refers more precisely to pre-painted zinc coated steel.
PPGL is similar as PPGI, which L refers to Galvalume, which the steel thus produced in this process is a prepainted, prefinished and ready for further processing into finished products or components. The coil coating process may be used for other substrates such as aluminium, or aluminium, stainless steel or alloy coated steel other than "pure" zinc coated steel.
However, only "pure" zinc coated steel is typically referred to as PPGI. For example, PPGL may be used for pre-painted 55%Al/Zn alloy-coated steel (pre-painted GALVALUME(r) steel*)
PPGI STEEL COIL SERIES
REGULAR POLYESTER PRE-PAINTED COIL
HIGH POLYMER PRE-PAINTED COIL
HIGH DURABLE POLYESTER PRE-PAINTED COIL
POLYVINYLIDENE FLUORIDE PRE-PAINTED COIL
SILICONE-MODIFIED POLYESTER PRE-PAINTED COIL
MATT ROUGH PRE-PAINTED COIL
SOLAR REFLECTIVE PRE-PAINTED COIL
PRINTED PRE-PAINTED COIL
ANTI-STATIC PRE-PAINTED COIL
COLD STORAGE USAGE PRE-PAINTED COIL
|THICKNESS||COIL WIDTH||COIL INNER||COIL OUTER||COIL WEIGHT|
|0.12~1.5mm||600~1200mm||508/610mm||800~1500mm||max 6 Tons|
|2, EN10142:2000; EN10327:2004; DX51D+Z; DX52D+Z|
|3, JIS G 3302-1998, SGCC, SGCD1|
|4, ASTM A653 / A653M, CS(A,B,C), FS(A,B)|
|5, ISO 3575: 1996(E), 01, 02, 03|
2 Structure Show and Common Color
Normal Coating Performance Testing Standards:
|TEST ITEM||SURFACE STANDARD||BACK STANDARD|
|Dry Film Thickness||15 ~ 20 μm||8 ~ 10 μm|
|GLOSS (60°)||high: 60±5; medium: 40±5 low: 30±5||30 ± 5|
soak in 5% HCL solution for 240 hours without discoloration and
with wrinkling and loss of gloss
|RESISTANCE TO SALT SRAY||500|
Remarks: Other customization and quote shall be offered based on the parameters of actual products if they are not products of normal specification.
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