... wax casting 4.ASTM,DIN,JIS,BS;ISO:NF Butterfly valve body and disc CastingsCast iron and cast steel,aluminium ... ,25,30,35,40,45,50;ASTM A126-Class A, Class B, Class C;DIN-GG10,GG15,GG20,GG25,GG30,GG35; ... ,FC25,FC30,FC35;BS-Grade 150,180,220,260,300,350;NF-FGL150,FGL200,FGL250,FGL300,FGL350;Green-sand ... .: 86 411 82530406-16Fax: 86 411 82530206Skype: xuekui87 Butterfly valve body and disc castings