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球墨铸铁管与普通管道傻傻分不清楚?

分类:常识应用 发布时间:2020-11-15 476次浏览

球墨铸铁管的制作过程是在普通铸铁管的原材料中添加了镁、钙等碱土金属或稀有...

         球墨铸铁管的制作过程是在普通铸铁管的原材料中添加了镁、钙等碱土金属或稀有金属铸造而成。球墨铸铁管与普通铸铁管对比,有着不小的区别,球墨铸铁管厂家安阳永通铸管为您总结以下几点,希望对您会有所帮助。

球墨铸铁管不仅保持了普通铸铁管的抗腐蚀性,而且具有强度高、韧性好、壁薄、重量轻、耐冲击、弯曲性能大、安装方便等优点。因此球墨铸铁管不但在国外普遍采用,而且在国内也得到了很好的推广使用,在我国很多地区,球墨铸铁管在中、小口径的给水管中已普遍采用;

球墨铸铁管与钢管的性能比较:

钢管可分为有缝钢管和无缝钢管,在给水管中道中一般采用有缝管。与球墨铸铁管相比,钢管具有韧性好、抗拉强度大、管壁薄、耐高压、管材长、接口少等优点,其缺点是耐腐蚀性差、价格高。因此在一般情况下,除了小口径管道及特殊工程(例如顶管工程;

球墨铸铁管与预应力钢筋混凝土管的性能比较:

球墨铸铁管与预应力钢筋混凝土管(适用于大口径的管道,口径已超过2000),具以下特点:

(1)节约能源,主要材料为砂、石。

(2)重量大、质地脆、切凿困难、施工难度相对较大。

(3)工作压力比球墨管低2o%一40%,为0.15—0.25MPa。

(4)偏转角度为1.5度,而球墨铸铁管可达3.0度,因此预应力钢筋混凝土管的地形适应能力差。

球墨铸铁管与PVC塑料管的性能比较:

与球墨铸铁管相比,PVC管材的特点是内壁光滑、重量轻、耐腐蚀、防结垢性能好、价格低等,但缺点也较多,主要有以下几点:

(1)易老化、热胀冷缩大,不宜长期受日光照射,保存室温不宜大于40℃。

(2)强度低、抗压性能差,施工不当易引起变形。

(3)刚性差,可挠度差,易引起口漏。

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The production process of ductile iron pipe is made by adding magnesium, calcium and other alkaline earth metals or rare metals to the raw materials of ordinary cast iron pipe. There is a big difference between ductile iron pipe and ordinary cast iron pipe. Anyang Yongtong pipe, a ductile iron pipe manufacturer, summarizes the following points for you, hoping to help you.


Nodular cast iron pipe not only keeps the corrosion resistance of ordinary cast iron pipe, but also has the advantages of high strength, good toughness, thin wall, light weight, impact resistance, large bending performance and convenient installation. Therefore, ductile iron pipe is not only widely used in foreign countries, but also widely used in China;


Performance comparison between ductile iron pipe and steel pipe


Steel pipe can be divided into slotted steel pipe and seamless steel pipe, and slotted pipe is generally used in the middle channel of water supply pipe. Compared with ductile iron pipe, steel pipe has many advantages, such as good toughness, high tensile strength, thin wall, high pressure resistance, long pipe length, less joints and so on. Therefore, in general, except for small diameter pipeline and special engineering (such as pipe jacking engineering;


Compared with the reinforced concrete pipe, the performance of the pipe is better


Ductile iron pipe and prestressed reinforced concrete pipe (suitable for large diameter pipe, the diameter has exceeded 2000) have the following characteristics:


(1) The main materials are sand and stone.


(2) It is heavy, brittle, difficult to cut and chisel, and relatively difficult to construct.


(3) The working pressure is 20% - 40% lower than that of nodular graphite tube, which is 0.15-0.25mpa.


(4) The deflection angle is 1.5 degrees, while the ductile iron pipe can reach 3.0 degrees, so the terrain adaptability of prestressed reinforced concrete pipe is poor.


Performance comparison between ductile iron pipe and PVC plastic pipe


compared with ductile iron pipe, PVC pipe is characterized by smooth inner wall, light weight, corrosion resistance, good anti scaling performance and low price, but there are also many disadvantages, mainly as follows:


(1) It is easy to be aged, with large thermal expansion and cold contraction. It is not suitable to be exposed to sunlight for a long time. The room temperature should not be higher than 40 ℃.


(2) Low strength, poor compressive performance, improper construction is easy to cause deformation.


(3) Poor rigidity, poor flexibility, easy to cause leakage.


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