2026 New Manhole Cover D400 C250 Square Watertight Lockable SMC 600mm Manhole Cover for Gas Station

2026 New Manhole Cover D400 C250 Square Watertight Lockable SMC 600mm Manhole Cover for Gas Station. 100% Waterproof Design: Features unique rubber hollow design with EPDM material and double sealing rings. Superior UV Resistance: Exclusive recipe prevents fading for over 3 years, solving SMC fading issues. Long Service Life: Designed for durability with a service life exceeding 25 years. Lightweight Composite: Optimized structural design and material composition for easy handling. Anti-slip Surface: Textured surface design ensures safety and traction in all weather. Durable Aluminum Alloy Handle: Lifting hole made of aluminum alloy for easy installation and long life. OEM and ODM Support: Flexible customization options available for specific requirements.