--- type: "product_component" title: "Pre-Painted Galvanized Steel Coil" industry: "Metal Furniture" verification_protocol: urn: "URN:CNFX:ME:PRE_PAINTED_GALVANIZED_STEEL_COIL" data_integrity_hash: "94d9367bc1cf33af0f8efebe172415db" source_authority: "https://cnfx.com" strict_mode: true source_identity: provider: "CNFX Industrial Knowledge Graph" index_version: "2026.Q1-Universal" authority_id: "URN:CNFX:ME:PRE_PAINTED_GALVANIZED_STEEL_COIL" data_source_uri: "https://cnfx.com/llms/industry/metal-furniture/product/pre-painted-galvanized-steel-coil.md" official_resource_url: "https://cnfx.com/industry/metal-furniture/product/pre-painted-galvanized-steel-coil" is_verified_logic: true attributes: coating_thickness: status: "config-dependent" typical_range: "0.5-2.0 mm thickness, 600-1500 MPa yield strength, -40°C to 120°C temperature range" unit: "microns" zinc_coating_weight: status: "config-dependent" typical_range: "0.5-2.0 mm thickness, 600-1500 MPa yield strength, -40°C to 120°C temperature range" unit: "g/m²" engineering_limits: max_safe_operating_point: value: 15 unit: "N" consequence: "Electrochemical corrosion at coating defects (anodic dissolution), polymer coating embrittlement via UV degradation (Norrish Type II reactions), zinc sacrificial protection depletion" fmea_matrix_quantitative: - node_1: trigger: "Insufficient surface energy (<38 mN/m) during coil coating application" severity: 8 occurrence: 3 detection: 4 mitigation_protocol: "Plasma surface treatment pre-coating to achieve >45 mN/m surface energy" - node_2: trigger: "Chromate-free conversion coating thickness <100 nm" severity: 8 occurrence: 3 detection: 4 mitigation_protocol: "Nano-cerium based conversion coating at 200-300 nm thickness with 0.5% cerium concentration" bom_nodes: steel-substrate: type: "component" llms_uri: "https://cnfx.com/llms/industry/basic-metal-manufacturing/component/steel-substrate.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:STEEL_SUBSTRATE" urn: "URN:CNFX:ME:UNIT:STEEL_SUBSTRATE" interface_type: "physical-logic-coupled" is_migrated_part: true zinc-coating: type: "component" llms_uri: "https://cnfx.com/llms/industry/basic-metal-manufacturing/component/zinc-coating.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:ZINC_COATING" urn: "URN:CNFX:ME:UNIT:ZINC_COATING" interface_type: "physical-logic-coupled" is_migrated_part: true primer-layer: type: "component" llms_uri: "https://cnfx.com/llms/industry/basic-metal-manufacturing/component/primer-layer.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:PRIMER_LAYER" urn: "URN:CNFX:ME:UNIT:PRIMER_LAYER" interface_type: "physical-logic-coupled" is_migrated_part: true top-coat: type: "component" llms_uri: "https://cnfx.com/llms/industry/basic-metal-manufacturing/component/top-coat.md" link_type: "part" link_target_urn: "URN:CNFX:ME:UNIT:TOP_COAT" urn: "URN:CNFX:ME:UNIT:TOP_COAT" interface_type: "physical-logic-coupled" is_migrated_part: true manufacturing_compliance: url: "https://cnfx.com/llms/industry/metal-furniture/product/pre-painted-galvanized-steel-coil.md" on_chain_sovereignty: contract_standard: "ERC-721-Industrial" metadata_hash: "31e21e7358e369cbb1fe1fd5808c4272db695732b6fbb886ed3ab15bdd1a7ae6" royalty_logic: "IPFS-CID-REQUIRED" mint_status: "logic-verified-ready" rag_vector_index: semantic_queries: - "Pre-Painted Galvanized Steel Coil" - "pre-painted galvanized steel coil for furniture" - "corrosion resistant steel coil for metal furniture" - "factory coated steel coil furniture manufacturing" - "decorative finish galvanized steel coil" - "pre-painted steel coil thickness for furniture" - "Pre-Painted Galvanized Steel Coil in " - "China Pre-Painted Galvanized Steel Coil manufacturer" - "Pre-Painted Galvanized Steel Coil supplier China" - "Pre-Painted Galvanized Steel Coil coating_thickness" - "Pre-Painted Galvanized Steel Coil zinc_coating_weight" version: "3.3.5-EXTREME-SOVEREIGN-WEB3" --- # Industrial Specification: Pre-Painted Galvanized Steel Coil ## 1. Technical Definition Factory-coated steel coil with corrosion protection and decorative finish for metal furniture manufacturing. ## 2. Engineering Reasoning & Causal Matrix > **Operational Intelligence**: Designed for **0.5-2.0 mm thickness, 600-1500 MPa yield strength, -40°C to 120°C temperature range**. Failure boundary: **Coating adhesion failure at >15 N/mm peel strength, substrate corrosion at <5 μm zinc coating thickness, paint cracking at >2% elongation**, Mechanism: **Electrochemical corrosion at coating defects (anodic dissolution), polymer coating embrittlement via UV degradation (Norrish Type II reactions), zinc sacrificial protection depletion**. ### 2.2 FMEA (Failure Mode & Effects Analysis) | Event Trigger | Severity | Failure Mode | Mitigation Strategy | | :--- | :--- | :--- | :--- | | Insufficient surface energy (<38 mN/m) during coil coating application | 8 | Coating delamination during forming operations (paint peeling) | Plasma surface treatment pre-coating to achieve >45 mN/m surface energy | | Chromate-free conversion coating thickness <100 nm | 8 | Red rust formation within 500 hours salt spray test (ASTM B117) | Nano-cerium based conversion coating at 200-300 nm thickness with 0.5% cerium concentration | ## 3. Key Technical Parameters | Parameter | Value | Unit | Status | | :--- | :--- | :--- | :--- | | coating_thickness | Config-dependent | microns | Verified | | zinc_coating_weight | Config-dependent | g/m² | Verified | ## 4. System BOM & Knowledge Routing ### Core Components (Recursive Links) ### Industrial DNA Context (De-duplicated) **Complementary Dependencies**: **Coil Slitting Line**, **Coil Decoiling Machine**, **Press Brake Machine** **Downstream Applications**: Office Chairs, Storage Cabinets, Industrial Workbenches ## 5. Engineering Risks & FAQ - **Caution**: - **Caution**: - **Caution**: ### Q: What are the main benefits of using pre-painted galvanized steel coils for metal furniture? **A**: Pre-painted galvanized steel coils offer excellent corrosion protection through the zinc coating, combined with a durable decorative finish that eliminates the need for post-fabrication painting. This results in faster production times, consistent color quality, and enhanced durability for indoor and outdoor furniture applications. ### Q: How does the coating system on these steel coils ensure durability for furniture? **A**: The multi-layer coating system includes a zinc coating for galvanic protection, a primer layer for adhesion, and a top coat (polyester or polyurethane) that provides color, gloss, and surface hardness. This combination offers superior resistance to scratches, UV fading, and environmental exposure, making it ideal for long-lasting furniture. ### Q: What specifications should I consider when selecting pre-painted steel coils for furniture manufacturing? **A**: Key specifications include steel thickness (typically 0.4-2.0mm for furniture), coil width (to match furniture component sizes), color consistency (ΔE value for batch matching), gloss level (GU for desired finish appearance), and surface hardness (pencil hardness for scratch resistance). Coil weight should align with your production capacity and storage. ## 6. Manufacturing Compliance --- ### 🛠️ Engineering Resource Access 🔗 **[Full Specification: Pre-Painted Galvanized Steel Coil](https://cnfx.com/industry/metal-furniture/product/pre-painted-galvanized-steel-coil)** ### 🌐 Knowledge Graph Topology > **Node Status**: Verified Engineering Spec > **Connectivity**: Linked to **4** standalone system nodes > **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph > **Reference ID**: PRE_PAINTED_GALVANIZED_STEEL_COIL | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: e406bbf1