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Color Coated Roofing Sheet For Durable Building Projects
China
Supplier's customization ability
- Drawing-based customization
- Sample-based customization
- Full customization
Minimum order quantity: 1 ton
Shipping total: To be negotiated
- Lead time:
- confirmed with the quotation
- Packaging:
- standard export packing
- Samples:
- available on request
Product details
Technical Specifications of Color Coated Roofing Sheet
| Property | Parameter | Description |
|---|---|---|
| Product Name | Color Coated Roofing Sheet | Profiled prepainted steel roofing sheet manufactured from galvanized or aluminum-zinc-coated steel substrate. |
| Material Grade | DX51D+Z, S250GD+Z, S280GD+Z, SGCC, SS Grade 33 | Common grade references include EN 10346, JIS G 3302 and ASTM A653/A653M; grade equivalence is approximate and must be confirmed by mechanical properties. |
| Standard Compliance | ASTM A755/A755M, EN 10169, JIS G 3312, GB/T 12754 | Applicable standards for prepainted metallic-coated steel sheet and strip. |
| Chemical Composition | C ≤0.20%, Mn ≤1.50%, P ≤0.040%, S ≤0.040%, Si ≤0.50% by mass | Typical limits for low-carbon steel substrate; Cr, Ni and Mo are normally residual elements, and final limits depend on the ordered grade and standard. |
| Tensile Strength | 330–430 MPa for S250GD; ≥310 MPa for SS Grade 33 | Typical requirements according to EN 10346 and ASTM A653/A653M respectively. |
| Yield Strength | ≥250 MPa for S250GD; ≥230 MPa for SS Grade 33 | Minimum yield strength depends on substrate grade and governing material standard. |
| Elongation | Typically ≥19% | Measured using the test piece and gauge length specified by the applicable substrate standard; actual value varies by grade and thickness. |
| Sheet Thickness | 0.20–1.20 mm | Base metal or finished thickness can be specified according to the purchase agreement. |
| Width and Length | Width 600–1250 mm; length 1000–12000 mm | Effective cover width depends on corrugation or trapezoidal profile; custom cut lengths are available. |
| Metallic Coating | Z60–Z275 g/m² or AZ30–AZ150 g/m² | Zinc or 55% aluminum-zinc alloy coating mass stated as the total for both surfaces. |
| Paint Coating Thickness | Top coat 15–25 μm; back coat 5–15 μm | Coating thickness may be increased for corrosive or demanding service environments. |
| Paint System | PE, SMP, HDP or PVDF | Paint selection determines weather resistance, color retention, flexibility and expected service performance. |
| Surface Finish | Glossy, matte, textured or embossed | Available in standard RAL colors or customer-specified colors subject to production requirements. |
| Profile Type | Corrugated, trapezoidal or tile-effect | Profile depth, pitch and effective cover width can be selected for roofing and wall-cladding designs. |
| Dimensional Tolerance | According to ASTM A755/A755M, EN 10169, JIS G 3312 or GB/T 12754 | Thickness, width, length, flatness and profile tolerances follow the specified standard and order requirements. |
| Application | Industrial roofing, warehouses, workshops, agricultural buildings and wall cladding | Suitable for lightweight, corrosion-resistant and decorative building envelope systems. |
| Packaging | Waterproof paper, protective film, steel straps and metal edge protectors | Export-grade bundles are secured on skids or supports to reduce moisture and transit damage. |
| MOQ | Typically 5 metric tonnes | Minimum order quantity may vary by grade, thickness, profile, coating system and color. |
Color Coated Roofing Sheet For Durable Building Projects
Color Coated Roofing Sheet is a prepainted steel roofing material used by building contractors, roof system manufacturers, and importers seeking a consistent finish and practical weather protection. It combines a metallic-coated steel substrate with a factory-applied paint system, then is profiled or formed to suit a project’s roof design. Buyers can specify the coating system, sheet thickness, profile, dimensions, and color to match local conditions and installation requirements. This product supports applications ranging from industrial warehouses to agricultural buildings, while its defined specifications help procurement teams compare offers, plan fabrication, and coordinate delivery with their roofing system requirements.
Product Overview: Color Coated Roofing Sheet
A Color Coated Roofing Sheet is made from steel that receives a metallic corrosion-resistant coating and a paint finish under controlled production conditions. The substrate is commonly galvanized or aluminum-zinc coated steel; the selected coating and paint system should be stated in the order rather than assumed from the color or product name. The coil is coated before being cut or roll-formed into roofing sheets. This prepainting process gives the exposed face a uniform finish and can reduce the need for on-site painting.
Roofing sheets are available in different profiles, including corrugated and trapezoidal forms. Profile geometry affects stiffness, water drainage, overlap details, and compatibility with supporting structures. The paint system may include a primer and a topcoat, with the reverse side finished according to the intended use. Color selection is generally made from a supplier’s available range or a project-specific color reference; confirm the agreed color and finish before production. Related options can be reviewed through [[INTERNAL_LINK]] and [[INTERNAL_LINK]].
Performance depends on the complete system, not color alone. Substrate type, metallic coating mass, paint chemistry, film thickness, forming quality, installation details, and exposure conditions all influence service suitability. A roofing sheet should therefore be specified against the project’s environment and design requirements, including coastal exposure, industrial pollutants, humidity, UV exposure, and contact with dissimilar materials.
Specifications & Standards for Color Coated Roofing Sheet
There is no single universal size or grade for every Color Coated Roofing Sheet. Confirm the required values in the technical offer and purchase order. Relevant standards may include ASTM A755/A755M for prepainted steel sheet intended for building products, ASTM A792/A792M for aluminum-zinc alloy-coated steel sheet, and ASTM A653/A653M for zinc-coated steel sheet. In European projects, EN 10169 covers continuously organic coated steel flat products, while EN 10346 covers continuously hot-dip coated steel flat products. The applicable edition, product designation, and acceptance requirements should be agreed by buyer and supplier.
| Parameter | What to specify or verify |
|---|---|
| Base metal | Steel grade and applicable product standard, as required by the structural design |
| Metallic coating | Coating type and specified coating mass or designation; identify the applicable standard |
| Nominal thickness | Required thickness and measurement basis, including whether the metallic and paint coatings are included |
| Width and length | Ordered dimensions, tolerances, and whether width refers to feed width or effective cover width |
| Profile | Profile drawing or reference, rib height, pitch, and effective cover width |
| Paint system | Coating type, color reference, finish, and required face or reverse-side treatment |
| Documentation | Inspection records, test reports, or certificates agreed for the order |
For mechanical properties or chemical composition, use the values specified for the selected steel grade in the relevant standard and mill documentation. They should not be inferred from a generic roofing-sheet description. Where project compliance requires testing, define the test method, sampling, and acceptance criteria before production. Buyers comparing substrate options can also consult [[INTERNAL_LINK]] and [[INTERNAL_LINK]].
Applications
Color Coated Roofing Sheet is used across building sectors where a formed steel roof covering is appropriate. Common applications include:
- Industrial buildings: Warehouses, workshops, and factories, subject to structural design, ventilation, and exposure requirements.
- Commercial facilities: Retail units, logistics buildings, and service facilities where roof profile and color are coordinated with the building envelope.
- Agricultural buildings: Storage sheds, barns, and equipment shelters; buyers should assess humidity, condensation, and exposure to agricultural chemicals.
- Residential and modular construction: Roof systems for houses, cabins, and prefabricated buildings where local building codes permit the selected profile.
- Canopies and extensions: Covered walkways, loading areas, and small structures, with sheet spans and support spacing checked by the project designer.
Roofing sheets may also be used as part of a larger roof assembly incorporating insulation, underlay, fasteners, flashings, and drainage components. Confirm system compatibility and installation guidance with the designer or roofing contractor. Additional building-envelope products are listed at [[INTERNAL_LINK]].
How to Choose / Buying Guide for Color Coated Roofing Sheet
Start with the project specification and the conditions at the installation site. The following checks help procurement managers issue a clear inquiry and compare quotations on a like-for-like basis.
- Confirm the design requirements. Provide the profile drawing, effective cover width, sheet lengths, support spacing, roof slope, and any load or local-code requirements. Have the project’s structural professional verify suitability; a sheet profile alone does not establish allowable spans.
- Define the material system. State the steel grade, metallic coating type, coating designation, nominal thickness, paint system, color, finish, and reverse-side requirement. Ask the supplier to identify the standards and editions used for the quoted product.
- Request evidence and traceability. Specify which inspection documents are needed, such as a mill test certificate, coating or paint information, dimensional inspection, and batch identification. Agree the required format and whether independent inspection is necessary before order placement.
- Clarify quantity and MOQ. Minimum order quantity can depend on the requested substrate, color, thickness, profile, and production arrangement. Since requirements vary by supplier, request confirmation for the exact bill of quantities and ask how any overage or shortfall is handled.
- Plan production and delivery. Request a current lead-time estimate tied to approved specifications, color confirmation, and payment milestones. Confirm packaging, bundle labeling, moisture protection, loading method, delivery terms, and unloading responsibilities. For export shipments, align documents and transport planning with the agreed Incoterm.
- Review commercial terms. Payment methods and schedules vary by supplier and transaction. Confirm the currency, deposit or milestone terms, balance timing, bank charges, inspection arrangements, and claims procedure in the sales contract before production begins.
For an accurate quotation, provide destination, quantity, dimensions, profile, coating and paint requirements, and target delivery window. Buyers can use [[INTERNAL_LINK]] to review related specifications and [[INTERNAL_LINK]] for roof-system components.
Frequently Asked Questions
Q: What is the difference between galvanized and aluminum-zinc coated roofing sheet?
A: The difference is the metallic coating applied to the steel substrate. Galvanized sheet has a zinc coating, while aluminum-zinc coated sheet uses an aluminum-zinc alloy coating. Their performance depends on coating designation, paint system, fabrication, installation, and exposure. Specify the required coating standard and designation rather than relying on a generic product name.
Q: Which standards can apply to Color Coated Roofing Sheet?
A: Relevant standards include ASTM A755/A755M for prepainted steel sheet for building products, ASTM A653/A653M for zinc-coated steel sheet, ASTM A792/A792M for aluminum-zinc alloy-coated steel sheet, EN 10169 for organic coated steel flat products, and EN 10346 for continuously hot-dip coated steel flat products. The correct standard depends on the substrate and project specification.
Q: Can I order a specific color and roof profile?
A: Often, but availability depends on the supplier’s production capability, material range, and order quantity. Provide a color reference, finish preference, and profile drawing when requesting a quotation. Confirm the approved color sample or reference and profile dimensions in writing before production.
Q: What is the minimum order quantity?
A: MOQ is supplier- and specification-dependent. It may vary with color, thickness, coating, profile, and whether the order can be produced from available stock or requires a production run. Ask for the MOQ against the exact requested specification; no single quantity applies to every order.
Q: What certificates or documents should I request?
A: Agree documentation before purchase. Depending on the project, this may include a mill test certificate, product inspection records, coating and paint information, dimensional checks, and traceability details. State the required standard, edition, and document format in the purchase order.
Q: What is the production and delivery lead time?
A: Lead time depends on specification approval, material availability, order quantity, production scheduling, and destination. Request a written estimate that identifies when the timeline starts and whether it includes shipping. Confirm packaging and transport arrangements as part of the delivery plan.
Q: What payment methods are available for export orders?
A: Payment terms are agreed between the buyer and supplier and can vary by order and commercial relationship. Confirm accepted payment method, payment milestones, currency, charges, and required documents in the sales contract before production.
Q: How should roofing sheets be stored before installation?
A: Follow the supplier’s handling instructions. In general, protect bundles from standing water and moisture accumulation, keep them supported, and avoid damage to painted surfaces during handling. Inspect delivered packaging promptly and report visible transit damage in line with the agreed claims process.
Send your required dimensions, profile, steel and coating specifications, color reference, quantity, and destination to request a tailored quotation for Color Coated Roofing Sheet. The sales team can confirm available options, applicable documentation, MOQ, production timing, and export arrangements against your project requirements.
Ratings & Reviews
Know your supplier
Supplier's customization ability
- Drawing-based customization
- Sample-based customization
- Full customization
Minimum order quantity: 1 ton
Shipping total: To be negotiated
- Lead time:
- confirmed with the quotation
- Packaging:
- standard export packing
- Samples:
- available on request
