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球墨铸铁管相关执行标准有哪些?

作者: -1    发布时间: 2018-08-30    次浏览

球墨铸铁管相关执行标准有哪些?


  现在越来越多的人都知道这一点,就是球墨铸铁管质量其实是有大小之分的。有大小之分也就意味着,在使用上是不一样的。一般规格比较大的都是用于建筑,造船,桥梁建设等等。当然在一些比较特殊的时候,球墨铸铁管也是可以用作于运输的,但是不像圆形球墨铸铁管那般经常使用,运气体之类的还是可以的。当然这只是一些比较大规格的球墨铸铁管。 Nowadays, more and more people know that the quality of nodular cast iron pipe can be divided into different sizes. Size also means that it is different in usage. The general specifications are relatively large for building, shipbuilding, bridge construction and so on. Of course, in some special occasions, ductile iron pipes can also be used for transportation, but unlike round ductile iron pipes are often used to transport gas or something like that. Of course, these are just some larger ductile iron pipes.
1.产品标准 1. product standard
GB/T 13295-2003 水及燃气管道用球墨铸铁管、管件和附件< GB/T 13295-2003 ductile iron pipes, fittings and accessories for water and gas pipelines GB/T 17457-1998 球墨铸铁管水泥砂浆离心法衬层一般要求 General requirements for GB/T 17457-1998 ductile iron pipe cement mortar centrifugal liner GB/T 17458-1998 球墨铸铁管水泥砂浆离心法衬层新拌砂浆的成分检验 Composition test of GB/T 17458-1998 ductile iron pipe cement mortar centrifugal liner fresh mortar GB/T 17459-1998 球墨铸铁管沥青涂层 GB/T 17459-1998 ductile iron pipe asphalt coating GB/T 17456 球墨铸铁管外表喷锌 GB/T 17456 sprayed zinc on the surface of ductile iron pipes GB/T 17219-1998 生活饮用水输配水设备及防护材料的安全性评价标准 GB/T 17219-1998 safety assessment standard for drinking water transmission and distribution equipment and protective materials
2.工程标准
2. engineering standards
《建筑给水排水及采暖工程施工质量验收规范》GB50242-2002
Code for acceptance of construction quality of building water supply and drainage and heating engineering GB50242-2002
  球墨铸铁管是铸铁的一种,是一种铁、碳和硅的合金。球墨铸铁中石墨是以球状形式存在的,一般石墨的大小为6-7级,质量上要求铸管的球化等级控制为1-3级(球化率≥80%),因而材料本身的机械性能得到了较好的改善,具有铁的本质,钢的性能。退火后的球墨铸铁管,其金相组织为铁素体加少量珠光体,机械性能较好。
Ductile iron pipe is a kind of cast iron, it is a kind of alloy of iron, carbon and silicon. Graphite in nodular cast iron exists in the form of spheroidal graphite. Generally, the size of graphite is 6-7 grade. The nodularization grade of cast pipe is required to be controlled to 1-3 grade (the nodularization rate is more than 80%). Therefore, the mechanical properties of the material itself have been better improved. It has the nature of iron and the properties of steel. After annealing, the microstructure of ductile iron pipe is ferrite and a small amount of pearlite, and its mechanical properties are good.