Fg300

    #ggg50

    #500*7

    #600*3

    #tupy

    #tupy brazil

    #tupy mexico

    #fundição tupy

    #granalha

    #is 1865

    #fg300

    #is 210

    #sg iron

    #cast iron microstructure

    #jis fc30 astm equivalent

    #fc250 material

    #fcd steel