Handan Shengnada New Material Technology Co., Ltd.
                                                                                                           
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5 Years
Since 2021
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675 X 675 Ductile Iron Manhole Cover with GGG50 Material and Circlip Lock EN124 B125

Price Negotiable
Price: $50-90/t
MOQ: 1 tons
Delivery Time: 15 Days after mold confirm
Brand: SND FOUNDRY
Product Description
B125 Ductile Cast Iron Manhole Cover EN124 Round 675 X 675 D400 Cover
Circlip Lock Ductile Cast Iron EN124 D400 B125 Round Manhole Cover
Design Features
The spring manhole cover features a specialized spring structure designed to enhance stability, security, and safety. Its mechanical locking system with elastic buffering prevents bouncing, displacement, or theft caused by vehicle impact or external forces.
This innovative design addresses common issues with traditional manhole covers, making it ideal for high-traffic areas. The optimized materials, structure, and standards make it a crucial safety component in modern urban infrastructure.
Structure and Principle
  • Circlip Device: Composed of slots, blocks, and telescopic springs that create a mechanical lock when closed, preventing loosening or bouncing.
  • Double-layer spring design: Enhances pressure resistance and stability for high-load areas like motor vehicle lanes.
  • Anti-bounce function: Tensioning structure with springs ensures fixed positioning under force, reducing vibration and noise.
Material and Performance
  • Ductile Iron Construction: High strength, corrosion resistance, and toughness with load capacity exceeding 80 tons (D400 level), suitable for urban main roads.
  • Anti-slip & Anti-theft: Surface features anti-slip patterns combined with lock structure to prevent theft and accidental opening.
Maintenance and Innovation
  • Easy maintenance: Simplified installation and removal process for daily maintenance.
  • Process improvement: Spring displacement adjustments (e.g., 1 cm offset) solve loosening issues caused by aging, significantly reducing maintenance costs.
Product Specifications
Frame (mm) Cover (mm) Height (mm) Load Class (EN124)
600 × 1500 500 × 1400 50 - 100 A15, B125, C250, D400
600 × 1000 500 × 1300 50 - 100 A15, B125, C250, D400
500 × 1000 400 × 900 50 - 100 A15, B125, C250, D400
500 × 900 400 × 800 50 - 100 A15, B125, C250, D400
About Our Company
SND has been manufacturing and supplying metal goods for over 20 years. Our expertise includes sand casting, lost wax casting, lost foam casting, and precision machining, working with materials like cast iron, steel, stainless steel, and aluminum. We also provide surface finishing and assembly services.
Our products serve diverse industries including automotive, rail transportation, agricultural machinery, chemical, energy, electricity, water, air compressor, and construction sectors.
Our ISO9001-certified quality control systems ensure consistent and reliable quality for every component. We conduct comprehensive inspections including spectrometer, ultrasonic, magnetic, permeability, elongation, and tensile/yield strength tests.
Ductile cast iron manhole cover with spring locking mechanism Close-up of manhole cover's anti-slip surface pattern Installed manhole cover in urban road setting Manufacturing process of ductile iron manhole covers

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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Handan Shengnada New Material Technology Co., Ltd.
Location No.4 Building, Wuan industry park, Handan City, Hebei, China
Contact Person Andy

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