پردازش قرقرههای پوششدادهشده و پیشرنگشده در خطوط شکلدهی غلتکی
1. Introduction: Why Coated Materials Change the Rules in Roll Forming In modern metal construction systems, coated and pre-painted steel coils have become the mainstream choice due to their corrosion resistance, aesthetic performance, and reduced post-processing cost. However, when these materials enter a roll forming line, the processing logic changes fundamentally. Unlike bare steel, coated […]