Four Types of Commonly Used Substrates for PPGI Coil

Release time:2021-08-26

1. Cold rolled substrate

The PPGI coil produced from the cold rolled substrate has a smooth and beautiful appearance, and has the processing properties of the cold rolled plate. But any small scratch on the surface coating will expose the cold rolled substrate to the air, which will quickly create red rust where the iron is exposed. Therefore, such products can only be used for temporary isolation measures and indoor materials with low requirements.

2. Hot dip galvanized substrate

Hot-dip galvanized color coated steel coil is made by painting organic coating on hot-dip galvanized steel plate. In addition to the protective effect of zinc, the organic coating on the surface also plays a role in isolation, protection and rust prevention, and its service life is longer than that of hot galvanized plate. The zinc coating of hot-dip galvanized substrate ranges from 30g/m2 to 275g/m2 (double-sided).

3. Hot-dip aluminum-zinc substrate

Hot dip aluminum zinc plate (GL) can also be used as color coating substrate (55%AI-Zn and 5%AI-Zn) as required. Such color coating steel coil is called PPGL normally.

4. Electro galvanized substrate

When painting electro galvanized substrate with organic coating, we get the electro galvanized color coated sheet (PPEG). As the zinc coating of electro galvanized sheet is thin, usually 20/20g/m2, this product is not suitable for outdoor wall, roof and so on. But because of its beautiful appearance and excellent processing performance, it can be mainly used for home appliances, acoustics, steel furniture, interior decoration and so on.

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