Dx51d Sgcc Coating Cold Rolled Galvanized Steel Coil For Roofing Sheet.The coil coating process may be used for 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 steel,
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