Roofing|HTS Code

Roofing harmonized system code

Product Overview Roofing (HTS 7308.90) refers to iron- or steel-based roofing components and assemblies used as parts of structures (not complete prefabricated buildings). Product forms include profiled corrugated sheets, trapezoidal/standing-seam panels, coated cold-rolled coils slit for roof panels, structural roof purlins and frames, flashings and ridge caps fabricated from carbon steel or zinc/aluminium coated steel. Key characteristics: substrate steel grade (e.g., S250–S350/S350GD), thickness/gauge ranges (typical 0.3–1.5 mm, gauges 28–14), panel widths (600–1250 mm), lengths (cut-to-length up to ~12 m), tensile strength (≈350–550 MPa), coating specification (galvanized Z275 g/m2 or Al-Zn AZ150–AZ200, paint systems PVDF 20–35 μm). Processing levels span untreated cold-rolled coil, hot-dip coated, pre-painted (coil-coated), and fabricated punched/stitched assemblies. Subcategories within 7308.90 commonly declared by form: coils for roofing, cut-to-length sheets/panels, fabricated roof frameworks/purlins, and ancillary metal roof parts (flashings, gutters). Commercial applications include building envelope cladding, industrial roofing, agricultural and retail structures, and OEM supply for construction contractors and assemblers. HTS Code Classification & Trade Specifications Full 6-digit HTS structure: Chapter 73 — Iron or steel; Heading 7308 — Structures and parts of structures (e.g., roofing); Subheading 7308.90 — Other (structures and parts of structures, iron/steel). Classification rationale: metal roofing components are parts of structures manufactured from iron or steel and not complete prefabricated buildings (excluded from Chapter 94/heading 9406), therefore falling under 7308.90 as roofing/roofing frameworks. Trade considerations: typical packaging is strapped bundles or palletized panels with interleaving film, edge protection and waterproof wrapping; coils shipped on skids with banding, inner bore supports and VCI film; containerized LCL/FCL with dunnage and ventilation to prevent condensation. Preservation: corrosion-inhibiting oils, VCI papers, and sealed wraps; handling notes to avoid metal-to-metal abrasion. Quality standards and tests referenced for customs and compliance: ASTM A653/A792, EN 10346, specified coating mass (g/m2), paint film build (μm), and salt spray resistance (e.g., 500–1000 h) as measurable attributes for duty classification and inspection.

Roofing Chapter Note

1.- In this Chapter the expression “cast iron” applies to products obtained by casting in which iron predominates by weight over each of the other elements and which do not comply with the chemical composition of steel as defined in Note 1 (d) to Chapter 72. 2.- In this Chapter the word “wire” means hot or cold-formed products of any cross-sectional shape, of which no cross-sectional dimension exceeds 16 mm.