... ,DIN,JIS,BS;ISO:NF Butterfly valve body and disc CastingsCast iron and cast steel,aluminium and bronze castingMaterial ... parts, materials are as follows: ItemDescriptionMaterialTechnical Process1Ductile ironcastingsASTM A 536-Gr.60-40-18,65-45-12,80- ... ,25,30,35,40,45,50;ASTM A126-Class A, Class B, Class C;DIN-GG10,GG15,GG20, ... 86 411 82530206Skype: xuekui87 Butterfly valve body and disc castings