球墨铸铁管的优点和缺点作者: -1 发布时间: 2018-08-03 次浏览
As a common building material, the advantages and disadvantages of the ball cast iron pipe are very obvious。 First, the advantages, in the middle and low pressure pipe network (usually under 6MPa), the ductile cast iron pipe has a safe and reliable operation, low breakage rate, convenient and quick construction maintenance, excellent corrosion resistance and so on。 The newly developed "rock shield" series pipelines can be applied to trenchless construction, and are widely used in pipeline construction of river crossing, road crossing and building crossing。 The series of zine "series" pipes used special zinc and aluminum alloy external spraying technology to improve the corrosion resistance of pipelines several times。 It was widely used in the construction of corrosivity soil。
However, the disadvantages of ductile iron pipe are as prominent as the advantages, such as ductile iron pipe is not generally used in high-pressure pipe network (6 MPa or more). Because the tube body is relatively heavy, it is necessary to use machinery when installing. When leakage occurs after compression test, all pipes must be excavated, and the pipes must be hoisted to the height where they can be put into clamps, and clamps must be installed to prevent leakage.