... : SGS ISO9001:2000 Material:Ductile Iron/Gray Iron 1)Mechanical Cross Pipe Fitting and Grooved cross2)Finish:Paint ,Epoxy ... like water supplying ,gas2)supplying, heat supplying,etcIndustrial pipeline system on shipping ,mine, oil field,textile,powder plant,etc ... .3)Pipeline system on subway station ,railway station ,airport, seaport,bridge ...