0.7mm Thickness 350mm Width Double Side PVDF/PE Coated Downspout Aluminum Coil

Double Side PVDF/PE Coated Downspout Aluminum Coil 0.7mm × 350mm

Double side PVDF/PE coated downspout aluminum coil with 0.7mm thickness and 350mm width is a professional-grade aluminum material designed for rainwater downspouts, gutter systems, roof drainage components, and building exterior drainage accessories. With precise dimensional control, durable double-sided coating, and excellent forming performance, this coated aluminum coil is suitable for residential, commercial, industrial, and public building drainage projects.

Compared with traditional drainage materials, this PVDF/PE coated aluminum coil provides better corrosion resistance, lighter weight, easier processing, lower maintenance cost, and longer outdoor service life. It helps solve common problems such as rust, fading, coating peeling, difficult forming, and frequent replacement in rainwater drainage systems.

Product Overview

This double-sided coated downspout aluminum coil is specially developed for fabricating rainwater downspouts, gutters, elbows, connectors, and other drainage accessories. The standard 0.7mm thickness provides good strength and forming stability, while the 350mm fixed width is suitable for efficient batch processing and material utilization.

The double-sided PVDF/PE coating protects both the exposed outer surface and the inner drainage-contact surface. This improves weather resistance, corrosion protection, color stability, and long-term appearance, making the product suitable for outdoor drainage systems in different climate zones.

Key Specifications

Basic Product Specifications

Thickness: 0.7mm. The stable thickness and tolerance control within ±0.02mm help ensure consistent processing performance during cutting, bending, roll forming, and punching.

Width: 350mm. The fixed standard width is designed for efficient batch production of downspouts and gutters, helping reduce material waste and improve production efficiency.

Length: Customizable. Coil length can be supplied according to customer requirements, including 50m, 100m, 200m per coil, or other customized lengths for convenient transportation, storage, and processing.

Material and Coating Specifications

Coating: Double-sided PVDF/PE coating. The coating system provides weather resistance, corrosion resistance, color retention, and surface protection for both the interior and exterior surfaces of downspout products.

Coating Thickness: 20-30μm per side. The coating is uniform, firmly bonded to the aluminum substrate, and resistant to peeling, cracking, fading, and surface degradation under normal outdoor conditions.

Base Material: 3003 or 5052 aluminum alloy. These aluminum alloys offer good strength, light weight, ductility, corrosion resistance, and suitability for multiple forming processes used in rainwater drainage accessory manufacturing.

Application Specifications

This product is specially designed for rainwater downspouts, gutter systems, roof drainage accessories, building exterior drainage components, and customized aluminum drainage profiles.

It is suitable for tropical, subtropical, temperate, cold, humid, rainy, and coastal environments. Under normal use conditions, the outdoor service life can exceed 15 years.

Advantages of Double Side PVDF/PE Coated Downspout Aluminum Coil

Superior Coating Performance

Excellent Weather Resistance

The double-sided PVDF/PE coating is formulated for outdoor building environments. It can resist high temperature, low temperature, UV radiation, heavy rain, humidity, and acid-base corrosion in the air, helping reduce fading, discoloration, chalking, and coating degradation after long-term outdoor exposure.

Strong Adhesion and Durability

The coating is applied through advanced roller coating technology to ensure firm bonding with the aluminum substrate. It is designed to remain stable during roll forming, bending, punching, transportation, installation, and outdoor use.

Precise Processing and Easy Forming

Uniform Thickness and Width

The 0.7mm thickness is strictly controlled for consistent mechanical performance across the entire coil. The 350mm width is designed to match standard downspout and gutter processing requirements, improving production efficiency and reducing material loss.

Excellent Formability

The high-quality aluminum alloy substrate and smooth coated surface provide good bendability, ductility, and cutting performance. The coil can be processed into different downspout, gutter, elbow, and drainage accessory shapes without easily damaging the coating.

Durable and Cost-Effective Drainage Material

Lightweight and Easy Installation

Aluminum coil is lightweight compared with many traditional metal materials. This reduces transportation costs and installation labor intensity. It can be installed on building exteriors with less structural load and without complicated additional support.

Low Maintenance Cost

The double-sided PVDF/PE coating helps prevent oxidation, rust, corrosion, and surface aging. Unlike traditional steel drainage materials that may need regular painting or anti-rust treatment, coated aluminum drainage products usually require only simple cleaning under normal use conditions.

Wide Application Scope

Suitable for Various Building Types

This product is widely used in residential communities, villas, townhouses, commercial buildings, office buildings, factories, warehouses, schools, hospitals, public facilities, and other building drainage systems.

Adaptable to Different Climate Conditions

Whether used in hot and humid tropical areas, rainy coastal areas, dry temperate regions, or cold northern regions, the coated aluminum coil can maintain stable performance and help guide rainwater discharge effectively.

Quality Assurance

Raw Material Inspection

High-quality 3003 or 5052 aluminum alloy is selected as the substrate. Raw materials are inspected for chemical composition, mechanical strength, and surface quality to help ensure stable processing and product performance.

Production Process Inspection

During production, thickness, width, coating thickness, coating adhesion, and surface quality are monitored. Professional testing equipment is used to inspect weather resistance, corrosion resistance, and coating performance.

Finished Product Inspection

Each coil is inspected for appearance, thickness, coating uniformity, adhesion, packaging condition, and dimensional accuracy before delivery. Defective products are excluded to ensure stable quality for customers.

International Quality Certification

Products can support international quality and inspection requirements such as ISO9001, SGS, CE, and other project-related standards according to customer needs and market requirements.

Application Areas

Residential Building Applications

The coil is widely used in rainwater drainage systems for residential communities, villas, and townhouses. It can be processed into various styles of downspouts and gutters to match the architectural appearance while helping protect walls and foundations from water erosion.

Commercial and Industrial Building Applications

For commercial buildings, office buildings, shopping malls, factories, and warehouses, this coated aluminum coil provides durable corrosion-resistant drainage performance, reducing maintenance costs and supporting long-term building operation.

Other Special Applications

The product is also suitable for schools, hospitals, parks, stadiums, public facilities, outdoor temporary buildings, and prefabricated houses, providing a reliable and attractive drainage material for different construction scenarios.