GB / T 13295-2008 water and gas pipes with ductile iron pipes, fittings and accessories GB / T 17457-1998 centrifugal ductile iron pipe cement mortar lining - General requirements GB / T 17458-1998 ductile iron pipe Centrifugal cement mortar lining fresh mortar component testing GB / T 17459-1998 ductile iron pipe bitumen coating GB / T 17456 ductile iron pipe exterior spray zinc GB / T 17219-1998 in drinking water safety equipment and protective materials evaluation criteria chat City Shunxiang Building Materials Co. is a ductile cast iron, ductile iron pipe quote is an alloy of iron, carbon and silicon. Ductile iron is spheroidal graphite to form ductile iron pipe prices, the general size of 6-7 grade graphite, requiring Pipes on the quality control of the ball for the 1-3 grade level (ball rate ≥ 80%), Thus the mechanical properties of the material itself has been good improvement, with the nature of iron, steel properties. Annealed ductile iron pipe, the microstructure of ferrite and pearlite, good mechanical properties. [Changzhou] _ ductile iron ductile iron pipe water supply ductile pipe prices _ Shunxiang provided by Shunxiang ductile pipe. Welcome to consult Liaocheng Shunxiang Building Materials Co. (www.lcsxjc.com), be sure to specify when contact is through the "Business Alliance Member" see, thank you! Contact: Manager Ge