WL-621 15MM Wide-Adapter Heavy-Duty Frame Wiper Blade

Heavy-Duty Upgraded Frame Wiper Blade Engineered for Maximum Structural Strength

Traditional metal frame wipers often suffer from bracket vibration, arm joint looseness, or uneven pressure over prolonged usage in demanding driving conditions.

The WEILONG WL-621 represents our next-generation metal frame wiper engineering. Built upon an upgraded 15MM widened adapter interface, the WL-621 significantly increases joint contact rigidity, preventing lateral wobble and chattering during high-speed driving or severe storms. Supported by an ST12 anti-rust iron skeleton, precision reinforcement shims, and dual 65Mn spring steel backbones, it delivers clean, consistent wiping reliability for passenger vehicles, taxis, commercial delivery fleets, and heavy transport.

Key Structural Innovations and Engineering Highlights

1. Upgraded 15MM Wide Adapter Joint The adapter side width is enhanced to 15MM, providing a firmer grip on vehicle wiper arms. This heavy-duty reinforcement eliminates play at the connection joint, ensuring smooth sweeps even against heavy snow or torrential rains.

2. ST12 Heavy-Duty Anti-Corrosion Iron Bracket Manufactured from automotive-grade ST12 cold-rolled structural steel with advanced electrophoresis anti-rust coating. Multi-point articulated pressure claws maintain balanced downforce across curved windshields.

3. Reinforcement Shims and Screws Integrated reinforced steel shims and high-tensile locking screws stabilize every joint articulation, preventing rivet wear and frame deformation over long-term operations.

4. 65Mn Spring Steel Backbone Sheets Dual internal 65Mn manganese spring steel sheets deliver exceptional elastic memory, conforming tightly to windshield contours for streak-free wiping.

5. Premium Graphite-Treated Natural Rubber Custom-compounded natural rubber blade edge treated with microscopic graphite lubricant for silent gliding, superior UV defense, and reliable performance across extreme temperatures from -40°C to +70°C.

6. Rigorous Quality and Durability Testing Tested and certified for over 500,000 continuous wiping cycles (150W+ wiping strokes) under extreme all-weather road simulations.

Technical Specifications

Product Model: WL-621 Blade Type: Upgraded Metal Frame / Traditional Conventional Wiper Blade Adapter Specification: 15MM Widened High-Strength Adapter Joint Bracket Material: ST12 Anti-Rust Automotive Steel with Reinforcement Shims and Screws Spring Steel: 65Mn Dual High-Carbon Spring Steel Sheets Rubber Refill: AAA-Grade Graphite-Coated Natural Rubber Available Sizes: 12 inch to 28 inch (300mm to 700mm) Arm Compatibility: Universal U-Hook / J-Hook (9×3, 9×4) and Pin Arm Systems Operating Temperature: -40°C to +70°C (-40°F to +158°F) Wiping Durability: Over 500,000 Cycles Packaging Options: Retail Color Box, Double Blister Pack, Bulk Carton, Custom Private Label MOQ: 500 pcs per size

Target Applications and Distributor Channels

• High-Mileage Commercial Fleets: Taxis, rideshare operators, delivery vans, and rental fleets seeking durable cost-performance ratios.
• Mainstream Passenger Cars: Universal fitment for European, American, Japanese, and Korean passenger cars using conventional hook arms.
• Extreme Temperature Climates: Built for tropical high-humidity, arid desert sun, and sub-zero winter road conditions.

OEM and Private Label Manufacturing by WEILONG

As a professional wiper blade manufacturer, Shandong Weilong Auto Parts provides one-stop OEM/ODM solutions:

• Custom Brand Packaging: Branded retail boxes, PVC tubes, and custom hanging blister cards.
• Laser Logo Marking: Permanent logo engraving on the 15MM adapter housing and iron frame.
• Market Catalog Support: Tailored OE replacement catalogs and master distributor pricing tiers.