Located in Shanxi Province, which is the capital of coal in China and abounds in iron ore,covering an area of 4 million square meters,owning more than 1300 employees ,and annual output of 300 thousand ton's ductile iron pipe,registered capital reaching 260 million CNY ,Shanxi Guanghua Casting Pipe Co.,Ltd is the largest private ductile iron pipe manufacturer in China, and from late 2008,we started to produce the ductile iron pipes,and now we have passed ISO9001:2008 certificate by SGS, ISO14001:2004 & GBT28001 by Beijing Zhong-An-Zhi-Huan certification center ,and ...