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Definition: The surface of the manhole cover is formed with a zinc layer through hot-dip galvanizing or electro-galvanizing process, using the chemical stability of zinc to isolate oxygen and moisture and prevent the base material (usually cast iron or steel) from rusting.
Application: Widely used in municipal roads, industrial parks, residential areas, transportation hubs and other places, covering underground facilities such as sewers, cable wells, and communication wells.
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| Parameter | Description |
|---|---|
| Product Name | Galvanized Ductile Iron/Steel Manhole Cover |
| Material | – Base Material: Ductile Iron (EN-GJS-500-7) / Carbon Steel (ASTM A36) |
| – Coating: Hot-Dip Galvanized Zinc Layer (ISO 1461) | |
| Dimensions | – Diameter: 600mm, 700mm, 800mm (Customizable) |
| – Thickness: 25mm (Standard), 30mm (Heavy Duty) | |
| Load Rating | – Class B (15 tons): Pedestrian areas |
| – Class D (40 tons): Roadways | |
| – Class F (90 tons): Heavy traffic/Industrial zones (EN 124 Standard) | |
| Zinc Coating | – Process: Hot-Dip Galvanizing |
| – Zinc Thickness: ≥85μm (Average) | |
| – Adhesion: Passes ISO 1461 bend test | |
| Design Features | – Anti-Slip Surface: Raised chevron or diamond pattern |
| – Anti-Theft: Bolted locking mechanism (304 stainless steel bolts) | |
| – Water/Debris Resistance: Tight-fit frame with rubber seal (Optional) | |
| Weight | – 600mm Diameter: ~50kg (Ductile Iron) / ~35kg (Steel) |
| Standards Compliance | – EN 124 (EU) / GB/T 23858 (China) / ASTM A123 (USA) |
| Corrosion Resistance | – Salt Spray Test: >480 hours (ISO 9227) |
| Operating Temperature | – Range: -40°C to +120°C |
| Installation | – Frame: Embedded in concrete or asphalt |
| – Fixing: M16 Anchor Bolts (Galvanized) | |
| Maintenance | – Recoating: Zinc-rich paint for damaged areas |
| Certifications | – ISO 9001, CE Marking (Optional) |
| Lifespan | ≥25 years (Urban environments) |
| Custom Options | – Shape: Round, Square, Rectangular |
| – Surface Markings: “SEWER”, “TELECOM”, etc. | |
| Packaging | Wooden crates or steel strapping (Anti-rust paper wrapped) |
Shandong Baowu Steel Group Co., Ltd. located in Shandong, we have convenient transportation.our company is a large-scale enterprise specializing in the production of seamless steel pipes, welded steel pipes, stainless steel pipes and stainless steel products. We mainly produce including stainless steel plates/coils and profiles, Steel plate, alloy steel plate, wear-resistant steel plate,Carbon plate, square tube, galvanized tube, non-ferrous metal, PPGI and PPGL and other materials. Our company also has cooperative factories, like TPCO, TISCO, ZPSS, Tianjin Iron and Steel Group, HBIS Group, and Steel, Shandong Iron and Steel Group.We have rich experience in foreign trade and have established long-term cooperative relations with many well-known foreign companies.
We are a factory as well as a professional manufacturer established for more than 20 years and export over 15 years.
Can provide small samples for free. Customized sample takes 5-7 days.
Small trial order takes 5-7 days. Container order need 15-20 days.
Cover with PE film , wrap with waterproof paper, pack with wooden plate,belt by steel strip, fasten on pallet.
All products we supply is primary as you need, Our company is certificated to CE, and every product will be tested for 4-5processes. We welcome customers or the third party inspection agencies to come to our factory for inspection.
Usually 30% deposit by TT in advance and balance against copy pf BL or L/C at sight.
Become a leader in the global steel industry and jointly create a high-quality steel ecosystem. A steel company specializing in the production and sales of steel products.
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