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Customizable Corrugated Steel Roof Sheet Prepainted Galvanized/ Zincalume PPGI PPGL Galvanized Steel Sheet1
Steel ProductsGalvanized Steel SheetGalvanized Sheet
Qingdao Witop Steel Co., Ltd
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Product DescriptionQingdao Witop Steel Co., LtdTrusted by 1,000+ Clients Worldwide for Over 20 Years20+ Years of Industry ExperienceWith over two decades of expertise in coated steel production and export, we deeply understand global market needs and quality standards.Trusted by 1,000+ Global ClientsOur steel products have been successfully delivered to more than 1,000 clients in over 30 countries, earning long-term trust and repeat orders.Full Range of Steel ProductsSpecializing in Galvanized (GI), Galvalume (GL), Aluzinc, Zincalume, Prepainted (PPGI/PPGL) coils and sheets—widely used in roofing, construction, and industrial applications.Efficient Export ServiceFast response, professional documentation, and one-on-one support ensure a smooth international trade experience.SpecificationTypeWave-Shape, Trapezoid-Shape, Glazed Tile, Ridge TilesPainting CoatingPrimer: 5-10μmTop Coating: 10-25μmBack Coating: 5-10μmPainting BrandNippon, AkzoNobel, KCCColor ChartAny RAL Chart or Client's Sample ColorSurface TreatmentPVC Film, Wrinkle/Matt, Printed Surface, EmbossedHardnessSofty, Semi Hard, Full Hard, G550Thickness0.12-2.00MMWidth600-1050MMBundle Weight2-3MT/Bundle or CustomizedMetallic CoatingZinc: 40-275G/M2;Alu-zinc: 40-150G/M2;PackageStandard Seaworthy Exporting PackingTransport TypeVessel Container, Vessel Bulk, Railway Container, Railway WagonLoading PortTianjin, Qingdao, Ningbo, Shanghai and other China's portDelivery Time15-25 Days after Receiving the DepositTerms of TradeEXW, FOB, CFR, CIFTerms of PaymentT/T and Irrevocable LC at SightProduction Capacity7000MT/MonthApplicationWidely used in roofing and siding for factories, warehouses, shopping centers, and residential buildings;Ideal for large-span steel structures like workshops, pavilions, airports, and stadiums;Used in prefab homes, container houses, temporary offices, and site dormitories;For construction site fencing, road barriers, and residential enclosures;Sometimes used for soffit decoration, ceilings, and interior partitions;Sandwich Panels, Wall Panels, Cold Room Panels, Shutter Doors / Rolling Doors, Home Appliance Panels etcProduct Structure & Process Flow ChartPrepainted Steel Structure* Finshed Coating* Primer*Chemical Conversion Coating*Metallic Coating*Steel Sheet (Base Metal)More Surface Treatment Type for Choose1. Regular2. Pattern3. Embossed4. Wrinkle (Matt)For further details, please contact our customer service team!Product ApplicationRoofing Sheet Process Flow Chart1. Uncoiler2. Feeding Table3. Roll Froming System4. Safety Fence5. Post-Cutting6. Finished Product Output SupporterQA QC InpectionProfessional Inspect EquipmentQuality Control – Guaranteed for Every BatchWe conduct strict quality control tests on every batch of galvanized steel coils before shipment to ensure superior product performance and customer satisfaction.Our Key Testing Procedures Include:Coating Thickness Test:Ensures consistent corrosion resistance and compliance with standards like ASTM A653, JIS G3302, and EN 10346.Tensile Strength & Elongation Test:Verifies mechanical strength and flexibility for forming, bending, and stamping applications.T-Bend & Flexibility Test:Confirms the coating's adhesion under extreme bending without cracking or peeling.Surface Finish & Spangle Inspection:Checks for regular, zero, or minimized spangle and overall surface appearance for aesthetic and performance requirements.Thickness and Width Precision Measurement:Guarantees tight tolerances as per order specifications.Chemical Composition Analysis:Validates base steel consistency using spectrometer analysis.Packing & DeliveryPacking DetailsStandard export package: covered with a layer of inside anti-water craft paper, middle PVC plastic film and outside 0.45mm thick steel sheet, packed on the iron pallets, bound with iron belt strip.WITOP steel can pack steel roofing sheet based on customer's requiremenLoading and Fastening Steel Roofing SheetWITOP steel have our own loading and fastening workers and team, which can fasten steel roofing sheet well in container and bulk based on ship line company. WITOP steel can guarantee goods well to every client.ApplicationFactory Live ShotCustomer Visited USOur ExhibitionOur PartnerOur factory welcomes international customers who personally visited our production line.With over 20 years of experience, Witop Steel is a trusted Chinese supplier serving 1000+ clients globally.We offer full factory tours, third-party inspection, and professional export services.Contact us to schedule a visit and explore long-term cooperation.Witop Steel regularly participates in international exhibitions such as Canton Fair, BIG 5 Dubai, BuildTech Asia, and other steel & construction trade shows around the world.Over the years, we've welcomed clients from Asia, the Middle East, Africa, South America, and Europe. Our exhibitions strengthen long-term partnerships and help buyers understand our quality and service firsthand.At Witop Steel, we believe that high-quality products start with reliable raw materials.That's why we source our base steel and coatings from leading Chinese steel manufacturers. Including long-term partnerships with certified mills such as Shougang, Baosteel, Rizhao Steel, and other reputable suppliers.Customer ReviewCeritifcateOver the years, Witop Steel has served more than 1,000 clients in 30+ countries, earning high praise for our product quality, fast delivery, and professional service.Our factory is ISO 9001 certified and our products comply with international standards such as ASTM, JIS, EN, ensuring consistent performance, durability, and safety for our global clients.Buyer's Guide: Common Questions Answered by Witop SteelQ1: Are you a manufacturer or trading company?A: We are a professional manufacturer of galvanized steel coils, galvalume coils, and prepainted steel (PPGI/PPGL) with over 20 years of experience. Our factory is located in China and supports both OEM and direct export services. Q2: What is your minimum order quantity (MOQ)?A: Our standard MOQ is 25 tons (1 container), but we also support small trial orders for new customers. Q3: What standards do your products follow?A: We produce coils according to ASTM A653, JIS G3302, EN 10346, and other international standards. Certificates like ISO, SGS, BV, CO, and Form E are available upon request. Q4: Can you provide sample coils or cut sheets?A: Yes, we can provide free A4-sized samples or cut sheets for testing and evaluation. Shipping costs may apply depending on location. Q5: How do you ensure quality control?A: Each batch undergoes strict quality inspection, including:Coating and thickness testTensile strength and elongation testT-bend and impact testSurface and spangle inspectionWe also provide mill test certificates (MTC) for every order. Q6: What's your lead time?A: Normal delivery time is 20–25 days after receiving the deposit. Urgent orders can be prioritized. Q7: Do you support third-party inspection?A: Yes. We welcome inspections by SGS, BV, TUV, or any agency appointed by the buyer. Q8: Which markets do you serve?A: Our main markets include Southeast Asia, the Middle East, Africa, South America, and Eastern Europe. We've served over 1,000 global buyers. Q9: Can I visit your factory in China?A: Absolutely! We welcome you to visit our factory. We'll provide pickup service, arrange a factory tour, and show you the production & inspection process. Q10: What are your payment terms?A: We accept T/T, L/C, and in some cases, DP or OA for long-term partners.
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