HeBei JianZhi Casting Group Co., ltd is one of largest malleable iron pipe fittings manufactures in china , and has the history of more than twenty years , now we hve 2300 employnees , including 150 engineers and professional techinicians , and more than 400 advanced equipments for manufacturing and testing , with various casting processes , the annual production is over 40, 000 Metric tons , and the rejecting rate of malleable iron pipe fittings has been kept within 1/300, 000. JIANZHI brand is well-known in domestic market and overseas , such as ASIA , Europe , North Amercia and Australia and so on