Pre-painted Galvalume Steel (PPGL)

The coating of galvalume steel is composed of 55% aluminium, 43.4% zinc and
1.6% trace elements.

PPGL is a product made of prepainted steel sheet. After surface pre-
treatment like chemical degreasing and conversion treatment of pre painted
galvalume sheet, one or several layers of organic coatings are coated on the
surface and then cured by baking. Also because there are various colors of
organic coatings, prepainted steel coil named after this, referred to as
color coated coil or prepainted galvanized steel sheet. The color coated
steel coil of the PPGL sheet price is different according to the different
patterns of pre painted coil steel you choose.

Specifications of Pre-painted Galvalume Sheet (PPGL)
Prepainted Galvanized Steel Coil
PPGI/ PPGL/ HDGL/ HDGI
Cold Rolled Steel Sheet
Standard AISI, ASTM, BS, DIN, GB, JIS Grade Q235B-0355B
Type Cold rolled Surface Galvalume
Color RAL Code/ Customerized printech Zinc coating 15-275g/m2
Thickness 0.15mm-1.2mm Width 600m-1250mm
Coil Weight 3-5 Tons or Required Coil ID 508mm/610mm
Painted Surface Printed/Matte/Wrinkled Coating PE/PVDF/HDP/SMP
Top Painting 10-35 Microns Back Painting 5-35 Microns
MOQ 25 Tons(1 20ft FCL) Place of Origin China
Payment Term T/T(30% Deposit+70%) Package Standard Sea-worthy Packing

Application of PPGL sheet
According to different thickness specifications and good corrosion
resistance, the PPGL is more suitable for severe outdoor environments, which
can be used in the power distribution cabinet (thickness of 1.2-2mm), solar
water heater (0.32mm), anti-theft door panel, etc.


Differences between PPGI and PPGL
PPGI is short for pre-painted galvanized steel, while PPGL is short for pre-
painted galvalume steel. Compared with PPGL, PPGI has relatively active
chemical properties, so its anti-corrosion ability is quite different. The
test under the same outdoor conditions shows that the service life of PPGL
is more than four times that of PPGI. The aluminium-zinc alloy structure of
PPGL is composed of 55% aluminium, 43.4% zinc and 1.6% silicon solidified at
600 ℃. The whole structure is composed of aluminium iron silicon zinc to
form a dense quaternary crystal, so as to form a strong barrier to
effectively prevent the penetration of corrosion factors.

1. Corrosion resistance:

Aluminized zinc has a stronger protective effect and better corrosion
resistance than galvanized products. The corrosion resistance of the "55%
aluminium-zinc plated steel coil" comes from the barrier protection function
of aluminium and the sacrificial protection function of zinc. When zinc
makes sacrificial protection in the cutting, scratch and coating scratch
parts, aluminium forms an insoluble oxide layer to play the function of
barrier protection.

2. Heat resistance:

The heat resistance of 55% Al Zn alloy steel plate is better than that of
galvanized steel plate, which is similar to that of PPGI. PPGL steel plate
can be used in high-temperature environments up to 315 ℃.

3. Reflectivity:

55% Al Zn alloy plated steel plate has high reflectivity, making it a heat
resistant barrier; The thermal reflectivity of PPGL is almost twice that of
PPGI. Therefore, it can also achieve an energy-saving effect by acting as a
roof and panel without painting.

4. Paintability:

Due to the excellent adhesion between the zinc layer of PPGL and the paint,
when used as a signboard for general purposes, it can be painted without
pretreatment and weathering treatment; PPGI needs weathering treatment and
pretreatment. So that the surface of the PPGL sheet is smoother than that of
the PPGI sheet.

East Steel is one of the galvanized steel coil manufacturers that is
committed to creating high quality coated steel. Our production line
includes two core parts: the painting unit and the printing unit. As a
professional galvanized steel coil manufacturer/supplier/factory, East Steel
is capable of many strengths. The structure and process of the painting unit
adopt the advanced design concept from South Korea, and the whole line
adopts the electronic control equipment of Germany Siemens.

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