نظرة عامة
Hot-dip galvanized (GI) steel coil provides zinc-coated feedstock for roofing sheet manufacturing, ducting and general fabrication. A roofing RFQ should include the profile drawing, base-metal thickness, width and coil limits of the roll-forming line. Specify the grade within its governing standard and state the zinc coating designation separately; a familiar grade name does not define the coating mass. Agree spangle, surface treatment and any forming checks before comparing quotations. If a buyer requests Z275 or another coating class, confirm that combination with the grade, dimensions and inspection basis in the quotation. Narrow feedstock belongs on the galvanized strip route, with slit width and edge requirements. For painted roofing, compare PPGI or PPGL and add paint-film and color requirements. Packing, coil identification and moisture protection should match the storage and sea-freight plan.
نطاق المنتج
- يتم اختيار الدرجة والمواصفة من متطلبات المشروع ولا يفترض التكافؤ بين المواصفات.
- تؤكد أبعاد لفائف / صفائح والسطح والمعالجة والفحص والوثائق من طلب التسعير.
