<正>YB/T5108-1993 This standard is applicable to fireclay refractory bricks with unit weight ≥50 kg for glass melting furnaces.1 Technical Requirements1.1 The
<正>YB/T5107-2004 1 ScopeThis standard specifies the classification,shape,dimension,technical requirements,test method,inspection rules,packing,marking,transpor
<正>JC 497-92 (96)1 Contents and Applied ScopeThis standard specifies the classification, shapes and dimensions, technical requirements, test methods, inspectio