Centrifugally Catsing alloy steel glass refractory roller 1.Standard:ANSI,ASTM,ASME,DIN,GB 2. ... Material:alloy 3.ISO9001:2008 Centrifugally Catsing alloy steel glass refractory roller1.StandardANSI,ASTM,ASME,DIN,GB2.Material:Alloy ZG40Cr25Ni35Nb3 ... for metallurgical and building material industry Centrifugally Catsing alloy steel glass refractory roller