Fireproof Galvanized Steel Corrugated Roof Panel Corrugated Steel Roofing Sheets
Corrugated steel sheet (Roofing sheet) is a building material composed of sheets of hot-dip galvanized mild steelor Galvalume steel,cold-rolled to produce a linear corrugated pattern in them. The corrugations increase the bending strength of the sheet in the direction perpendicular to the corrugations, but not parallel to them. Normally each sheet is manufactured longer in its strong direction.Material: SGCC, SGCH, G550, DX51D, DX52D, DX53D
Raw material 762mm to 680,670,660,655,650 mm (after corrugated) and 9 waves
Raw material 914mm to 815,810,790,780mm (after corrugated) and 11 waves
Raw material 1000mm to 930 915,910,905,900,880,875mm (after corrugated) and 12 or 14 waves
Surface treatment: unoil,dry,chromate passivated, non-chromate passivated
Package: seaworthy package
Monthly Output: 30000 tons
Pre-painted Galvanized steel is a Galvanized steel with a number of paint layers and treatments in a carefully controlled environment in a continuous coil coating line.
Pre-painting can also be done on electrogalvanized coils and cold rolled coils depending on the end-use and application of the steel.
PPGI Steel Coil is better at corrosion resistance. Paint on hot dip galvanized steel make it decaorative and
usually used to indoor and outdoor decoration. Service life of PPGI coils can up to 20 years without fading.(Zn 60g, 25um painted in top and 10um painted in back).Production meets the standard of EN10147 DX51D+Z, JIS G3312 CGCC, ASTM A755M A653M.
Pretreatment Types for Substrate Surface: Normal chemical pretreatment, Chrome free chemical pretreatment. Coating type: Top side two coats, bottom size one coat, Topside two coatings, bottom side two coatings, Topside two coatings, bottom side two coatings(Note: The thickness of bottom side coating is smaller than that of the product type 2/2).
The annual capacity of Color-coated Line is 240,000 tons. We could manufacture top grade steel sheet in building materials plate, automobile plate, electrical appliance plate, solar energy panel, high coating and corrosion resistant plate, MATT plate and plate used for windows and doors.
The process of Prepainted Steel Sheets: Uncoiling→Welding→Inlet Looper→Clearning→Chemical Treatment→Primary Coating→Baking of Primary Coating→Baking of Primary Coating → Cooling of Primary Coating → Finish Coating → Baking of Finish Coating → Cooling of Finish Coating → Outlet Looper → Checking → Stamping → Cutting → Coiling.
Standard Export Packing:
4 eye bands and 4 circumferential bands in steel
Galvanized metal fluted rings on inner and outer edges
Galvanized metal and waterproof paper wall protection disk
Galvanized metal and waterproof paper around circumference and bore protection
About the sea worthy packaging: extra reinforcement before shipment to ensure that the goods are safer and less damaged to customers.
Containers for producing petroleum and barrels for containing different kinds of chemical raw materials,
industrial troughs, water tanks, military bullet cases, fermentation vats for beer, barns, distribution cabinets,
containers, fertilizer boxes, etc.
Backboards shells of washing machine, refrigerator, air conditioning and dust collector, wardrobes, tables,
night tables, file cabinets, file boxes, book shelves and other furniture.
Each bare coil to be securely tied with two bands through the eye of coil (or not) and one circumferential, the contact points of these bands on the coil edge to be protect with edge protectors.
Coil then to be properly wrapped with water proof /resistant paper, it then to be properly and completely metal wrapped.
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