简要说明：铸铁管牌的球墨铸铁管厂家一般石墨的大小为6-7级产品：估价：3450，规格：齐全，产品系列编号：齐全

球墨铸铁管是铸铁管的一种，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，球墨铸铁管厂家一般石墨的大小为6-7级，质量上要求铸铁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，机械性能良好，防腐性能优异、延展性能好，密封效果好，安装简易、主要  球墨铸铁管成品库
用于市政、工矿企业给水、输气，输油等。是供水管材的首选，具有很高的性价比。与PE管材相比，从安装时间上，球墨管比PE管安装更简单快捷，且安装后内外承压力更好；从密闭性和防腐性上来看，球墨管安装后的密闭性更好

The characteristics of ductile cast iron pipe is a kind of cast iron pipe, which is an alloy of iron, carbon and silicon. Graphite in ductile cast iron is exist in spherical form, general graphite size is 6-7, the quality requirements of cast iron pipe nodulizing grade control 1-3 ( spheroidization rate " 80% ), and mechanical properties of the material itself has been improved, with the nature of performance, iron and steel. Ductile cast iron pipe after annealing, the microstructure is ferrite and pearlite, good mechanical properties, excellent corrosion resistance, good ductility, good sealing effect, simple installation, mainly ductile cast iron pipe product warehouse