Cast iron manhole cover
The excellent ductile iron manhole cover has good tensile strength and compressive performance. Compared with resin composite and cement, its elongation is much improved. Not only is it good in compression resistance, durable, but also beautiful in appearance and reasonable in price, it is an irreplaceable and reliable product. Widely used in municipal roads, highways, communications, electricity, water, communities, schools and other parks.
Features of Ductile Iron Manhole Cover:
Good toughness. The impact value is detailed with medium carbon steel, which is more than 10 times that of gray iron material.
Strong corrosion resistance. In the water spray corrosion test, the amount of corrosion in the 90-day period is only 1/40 of the steel pipe, which is 1/10 of the gray iron pipe. The service life is 2 times that of gray iron pipes and 5 times that of ordinary steel pipes.
Good plasticity. The elongation is ≥7%, which is similar to that of high-carbon steel, while the elongation of gray iron materials is zero.
high strength. Tensile strength ób≥420MPa, yield strength ós≥300MPa, which is the same as low-carbon steel, and is three times that of gray iron material.
This article has been read 1247 times