... 2000 Material:Ductile Iron/Gray Iron 1)Mechanical Cross Pipe Fitting and Grooved cross2)Finish:Paint ,Epoxy Powder or Galvanization ... ASTM,DIN,BS, SGS ISO9001:2000Usage:1)Automatic sprinkler system for fire protection on commercial ,civil and municipal constructions ... water supplying ,gas2)supplying, heat supplying,etcIndustrial pipeline system on shipping ,mine, oil field,textile,powder plant,etc ...