
Umbrella Head Roofing Nails Bwg9 X 2.5" Galvanized for Roof Sheet Installation. Strong Holding Power: Large umbrella head design improves waterproof performance and prevents roofing sheets from lifting. Corrosion Resistance: Uniform electro-galvanized coating ensures solid protection for outdoor, coastal, and high-humidity environments. Durable Material: Made from Q195 low carbon steel for tough, durable performance meeting long-term construction needs. Versatile Shank Options: Available in smooth or twisted shank to improve gripping force on wood and roofing sheets. Flexible Sizing: Sizes from 2' to 3' (BWG9/10/11) are in stock, with customized sizes supported. OEM Customization: OEM packing, customized weights, and logo printing are accepted for wholesale buyers. Professional Manufacturer: Over 15 years of experience manufacturing roofing nails with strict QC control.