3004 and 3005 Al-Mg-Mn Coil for Standing Seam Roofs
PPGI.LTD supplies 3004 and 3005 Al-Mg-Mn coil for standing seam roofs. Al-Mg-Mn means aluminum with magnesium and manganese. We match the temper to the panel machine. We also check the final seam.
Should You Use 3004 or 3005?
Both alloys can work for standing seam roofs. The temper and seam shape often decide the better choice.
| Decision | What to send | What we confirm |
|---|---|---|
| Alloy | Project specification | 3004 or 3005 availability |
| Temper | Panel and seam detail | Forming balance |
| Thickness | Roof design requirement | Order tolerance |
Send us the project grade and panel drawing. We will confirm the exact alloy and temper.
Can the Coil Handle a Double-Lock Seam?
A double-lock seam bends the metal more than once. The paint must bend with it.
| Check | Why it matters | Buyer action |
|---|---|---|
| Panel forming | Creates the long roof tray | Send roll-former details |
| Seam closing | Adds tighter bends | Send seam drawing or sample |
| Paint flexibility | Helps avoid cracking | Approve the coating system |
Send the seam drawing or sample. We can review the bend path. We can also prepare a sample for a forming trial.
Who Plans Roof Movement and Clip Spacing?
Long roof panels move when the temperature changes. The roof system must allow that movement.
| PPGI.LTD supplies | Project team decides | Share with us |
|---|---|---|
| Coil alloy and temper | Clip type and spacing | Panel length |
| Thickness and width | Wind-load design | Roof zone |
| Coating and color | Expansion details | Installation system |
We supply the confirmed coil grade and size. The roof designer sets the clips and supports. The Metal Construction Association’s clip guide explains this design role.
Buyer Concern & FAQ
Is 3004 better than 3005 for every roof?
No. Both can work. The temper, panel shape, project grade, and local supply decide the better option.
Can the paint handle double-lock seaming?
It can when the metal, paint, seam, and tools work together. A trial is useful for a tight seam.
Do you decide the roof clip spacing?
No. The roof system supplier or engineer decides it. We supply the coil to their confirmed requirements.
Can you supply large coils for site forming?
Yes, within practical machine and transport limits. Tell us the coil limit and target panel length.
