standard:GB,BS,DIN,AWWA,ISO PN0.6-1.6 DN80-200 main material:grey cast iron,ductile cast iron, alloy cast iron, steel standard:GB,BS,DIN,AWWA,ISOPN0.6-1.6DN80-200main material:grey cast iron,ductile cast iron, alloy cast iron, steel GGS300X irrigation hydrant