3d捕鱼 Main application fields of ductile iron manhole cover
Nodular cast iron manhole covers may sound strange, but they are not uncommon in our lives. They can cover deep wells on roads or at home to prevent people or objects from falling. Moreover, cast iron manhole covers are widely used, mainly including the following aspects:
1. Power supply engineering: it is used for power supply cable, telecommunication engineering, telephone and communication cable pipeline, which is the power well cover and communication well cover that we often see.
2. Gas engineering: Gas Engineering, natural gas pipeline, etc., are the gas well covers we often see.
3. Drainage engineering: used for rainwater and sewage pipeline, as sewage well cover, rainwater well cover and drainage well cover.
3d捕鱼 4. Landscape engineering: supporting comprehensive pipeline, that is, we often see stainless steel well cover, invisible well cover and grass Basin well cover.
5. Heating engineering: heating pipeline, that is, we often see thermal well cover, gas well cover, etc.
6. Water supply engineering: it is used for tap water, fire protection engineering, water meter box cover, etc., that is, we often see tap water well cover, fire well cover and water meter well cover.
1. Good toughness. The impact value of nodular cast iron manhole cover is more than 10 times that of gray iron.
2. Strong corrosion resistance. In the water spray corrosion test, the corrosion amount in 90 days is only 1 / 40 of steel pipe and 1 / 10 of gray iron pipe. The service life is 2 times of gray iron pipe and 5 times of ordinary steel pipe.
3. Good plasticity. The elongation is more than 7%, which is similar to that of high carbon steel, but the elongation of gray iron is zero.
4. High strength. Tensile strength ó B ≥ 420MPa, yield strength ó s ≥ 300mpa, the same as low carbon steel, three times of gray iron material.
5. Beautiful appearance: simple line, silver appearance, modern trend.
6. Drainage function: leakage area reaches 83. 3%, more than twice that of cast iron.
7. Hot dip galvanizing: strong rust resistance, no maintenance and replacement.
8. Anti theft design: hinge connection between cover and frame, anti-theft, safe, easy to open.
9. Saving investment: when large span and heavy load, the price is lower than that of cast iron, and the cost of stolen or crushed replacement is saved.
3d捕鱼 10、 高强度：强度和韧性远高于铸铁,可用于码头,机场等大跨度和重载荷的环境。
10. High strength: its strength and toughness are much higher than that of cast iron, which can be used in large span and heavy load environment such as wharf and airport.
11. Specifications: to meet the requirements of different environments, loads, spans, sizes and shapes.