Galvalume Steel Coil
Aluminum zinc coated coil for roofing wall cladding and outdoor formed sections
Specifications
GL/PPGL Steel Coil
Color Coated Galvalume Steel Coil PPGL
Aluminum zinc coated coil with a factory color finish for exterior paneling and roofing
Pre-painted galvalume steel coil is aluminum-zinc coated strip that carries a color finish applied on the coil line. Roofing contractors, cladding manufacturers and metal panel producers specify it because galvalume has higher corrosion resistance than standard galvanized steel coil in outdoor environments and holds up when exposed to snow, ice and rain. Ordering the coil already finished removes the separate painting stage that otherwise sits between roll forming and dispatch, and it keeps the exterior color the same across a roof delivered in more than one load. Thickness is 0.1mm-300mm with width from 1500mm, and both can be customized as required.
- Product Name — Pre-Painted Galvalume Steel Coil
- Also Known As — PPGL color coated galvalume steel coil aluminum-zinc coated coil
- Standards — BS EN GB AiSi ASTM DIN JIS
- Material — Q195 Q215 Q235B Q345B S235JR S355JR SS400 SS490 SM400 SM490 G350 G550
- Base Grades — G250 G350 G450 G550 A36 SS400 S275jr S235
Why It Is Specified
Key Benefits of Pre-Painted Galvalume Steel Coil
Higher Outdoor Corrosion Resistance Than Galvanized
Galvalume steel coil has higher corrosion resistance than standard galvanized steel coil in outdoor environments. That is the reason it dominates exterior metal paneling and roofing work.
Built for Snow Ice and Rain Exposure
The aluminum-zinc coating resists corrosion better under snow, ice and rain, so it suits roofs that spend months wet rather than only shedding occasional weather.
Color Finish Applied on the Coil Line
The paint goes on flat strip before forming, so panels come off the line finished and the site sees a uniform face instead of touch-up marks around fixings.
Wide Grade Range in One Product
Q195, Q215, Q235B, Q345B, S235JR, S355JR, SS400, SS490, SM400, SM490, G350 and G550 are all available as the base, so a light roof sheet and a structural profile can come from one order.
Recognized Standards on the Quotation
Material is quoted to BS, EN, GB, AiSi, ASTM, DIN and JIS designations, which shortens the approval loop when the drawing and the buyer are in different markets.
Thickness and Width Set to Your Line
Thickness of 0.1mm-300mm and width from 1500mm are customized as required, so the coil is slit for the roll former rather than trimmed in your own shop.
Problems It Solves
What This Material Removes From Your Process
Roof Panels Corroding Faster Than the Building
Standard galvanized sheet loses ground in constant outdoor wet. Galvalume coil has higher corrosion resistance than standard galvanized steel coil in outdoor environments, which pushes back the reroofing date.
Repainting Formed Panels After Fabrication
A shop paint stage adds handling, drying space and rejects to every panel. Coil that arrives painted comes off the roll former ready to load.
Color Mismatch Between Deliveries
A staged roof finished from different paint batches shows the joins. Coil coating keeps the finish consistent so later panels sit next to earlier ones.
Buying Standard Widths and Trimming Them Down
Thickness and width are customized as required, so the coil is slit to your profile width instead of leaving edge scrap on your line.
Drawings Written to a Foreign Standard
Material can be quoted against BS, EN, GB, AiSi, ASTM, DIN and JIS, so an approval does not stall over which designation the specification used.
Application Scenarios
Where It Is Used
Exterior Metal Paneling
One of the widest uses of galvalume coil, where the painted face is the visible building surface for the life of the cladding.
Roofing Sheet and Standing Seam
Roof profiles in wet climates where corrosion resistance against snow, ice and rain decides the replacement interval.
Industrial and Warehouse Envelopes
Large span roof and wall sheeting where the same color has to run across deliveries made weeks apart.
Canopies Awnings and Facade Trim
Formed trim and flashing pieces that are cut and folded from the same coil as the main panels so the finish matches.
Agricultural and Storage Buildings
Sheds and stores exposed year round where a painted aluminum-zinc coating replaces repeat maintenance painting.
Who It Is For
Buyers Who Specify This Product
- Roofing sheet manufacturers buying finished coil for exterior profiles
- Cladding and facade fabricators sourcing painted coil for panels and trim
- Construction contractors specifying roof coverings for wet or coastal sites
- Roll forming plants needing coil slit to a fixed strip width and coil weight
- Project buyers matching BS EN GB AiSi ASTM DIN or JIS grade callouts
- Coil stockists supplying color coated galvalume to regional panel makers
Technical Data
Specifications and Technical Features
Values below come from the product data published by Shandong Tianyu Metal Products. Confirm the exact grade and size against your order.
| Product Name | Pre-Painted Galvalume Steel Coil |
|---|---|
| Also Known As | PPGL color coated galvalume steel coil aluminum-zinc coated coil |
| Standards | BS EN GB AiSi ASTM DIN JIS |
| Material | Q195 Q215 Q235B Q345B S235JR S355JR SS400 SS490 SM400 SM490 G350 G550 |
| Base Grades | G250 G350 G450 G550 A36 SS400 S275jr S235 |
| Coating Mass | G20 G30 G40 G60 G90 Z40 Z60 Z80 Z100 Z120 Z150 Z275 Z350 |
| Coating Type | Aluminum-zinc galvalume coating |
| Finish | Pre-painted color coat over the aluminum-zinc coating |
| Thickness | 0.1mm-300mm or customized as required |
| Width | 1500mm-2000m or customized as required |
| Typical Application | Exterior metal paneling and roofing |
| Place of Origin | China |
Technical Features
- Aluminum-zinc coated galvalume base with a coil applied color finish
- Standards BS EN GB AiSi ASTM DIN and JIS
- Material Q195 Q215 Q235B Q345B S235JR S355JR SS400 SS490 SM400 SM490 G350 and G550
- Base grades G250 G350 G450 G550 A36 SS400 S275jr and S235
- Coating mass G20 G30 G40 G60 G90 Z40 Z60 Z80 Z100 Z120 Z150 Z275 and Z350
- Thickness 0.1mm-300mm or customized as required
- Width 1500mm-2000m or customized as required
- Higher corrosion resistance than standard galvanized coil in outdoor environments
Materials
- Steel base in structural grades Q195 Q215 Q235B Q345B S235JR S355JR SS400 SS490 SM400 and SM490
- High strength base grades G250 G350 G450 and G550
- Aluminum-zinc galvalume coating over the steel base
- Organic color coat applied on the coil line
Manufacturing
How It Is Made and Processed
Base coil selection in the ordered structural or high strength grade
Aluminum-zinc coating applied to the ordered coating mass
Cleaning and pretreatment of the coated surface
Color coat application and curing on the coil line
decoiling to the ordered width from 1500mm upward
Cut to length where sheet is ordered instead of coil
Wrapping with edge protection and loading for export
Quality Control
Checks Before It Ships
- Material grade checked against the ordered BS EN GB AiSi ASTM DIN or JIS designation
- Coating mass verified against the ordered G or Z figure
- Thickness confirmed within the 0.1mm-300mm range before decoiling
- Painted surface examined along the coil for coverage and finish defects
- strip width and coil packing checked before loading
Customization
What We Can Change on Your Order
- Thickness and width customized as required outside the standard coil sizes
- Base grade selected from Q195 through to G550 for the span and gauge you need
- Coating mass selected from G20 up to Z350 for the exposure
- Color finish set to the project specification so staged deliveries match
- Coil slit to strip width and coil weight for your roll former
- Cut to length sheet supplied for trim and flashing work
Comparison
Pre-Painted Galvalume Steel Coil Against the Alternatives
| Standard galvanized steel coil | Galvalume has higher corrosion resistance than standard galvanized coil in outdoor environments and resists corrosion better when exposed to snow, ice and rain. |
|---|---|
| Uncoated cold rolled sheet painted on site | The aluminum-zinc layer stays under the paint as the corrosion barrier, and the finish is applied flat on the coil line instead of over formed panels. |
| Pre-painted galvanized coil | A galvalume base is the usual choice for exterior metal paneling and roofing where outdoor corrosion life is the deciding factor. |
| Fiber cement or coated aluminum roofing | Steel base grades up to G550 give the strength to span purlin spacings at thin gauge while carrying a factory applied exterior finish. |
Use Guide
Specifying Handling and Welding Notes
- Specify the base grade for span and gauge and the coating mass for exposure as two separate decisions
- Use galvalume rather than plain galvanized where the roof stays wet under snow ice and rain for long periods
- Keep the protective film on the painted face until the panel is installed so handling marks do not show on the roof
- Form at the temperature your line normally runs and check the first panel for paint cracking at the tightest radius
- Store coils indoors and dry since trapped moisture between wraps will mark a finished surface
- Send the profile drawing panel length and coil weight limit with the order so the coil is slit and cut before shipment
Questions Buyers Ask
Pre-Painted Galvalume Steel Coil FAQ
Why choose galvalume over galvanized for a roof?
Galvalume steel coil has higher corrosion resistance than standard galvanized steel coil in outdoor environments and resists corrosion better when exposed to snow, ice and rain.
What thickness and width are available?
Thickness is 0.1mm-300mm and width is 1500mm-2000m, both customized as required, so the coil can be set up for your roll former.
Which standards can you quote the material to?
Material is supplied against BS, EN, GB, AiSi, ASTM, DIN and JIS designations. Send the grade written on your specification and it will be quoted to that callout.
What base grades can the coating go on?
Q195, Q215, Q235B, Q345B, S235JR, S355JR, SS400, SS490, SM400, SM490, G350 and G550 are available, along with G250 to G550 and A36 base grades.
Can the coil be slit for our panel width?
Yes. Give the strip width and the maximum coil weight your line can take and the coil will be slit accordingly before shipment.
Will later deliveries match the panels already installed?
A coil applied color finish repeats between deliveries, which is why staged roofs and cladding jobs are ordered this way rather than painted panel by panel.
Do you supply flashing and trim material from the same coil?
Cut to length sheet can be supplied from the same finish so trim, flashing and main panels come from matching material.
Same Range
Related Products
Go Deeper
Industries and Guides Related to This Product
Construction and Infrastructure
Construction and infrastructure buyers order steel by the part it becomes: mild steel plate for base plates gussets and stiffeners
Read more
Power Generation and Energy
Energy projects are audited on documents as much as on steel. A boiler header, a cooling water line, a coal transfer chute and a s
Read moreNeed a Price on Pre-Painted Galvalume Steel Coil
Send the grade, thickness, width and quantity you need together with your destination port. A cutting list or drawing gets you a firmer number.