1.aibutterfly valve 2.material:304,316,316L,wcb,etc 3. ... can do the valve parts according to the clients' requir 1.butterfly valve2.material:304,316,316L,wcb,etc3.size:4''4 ... :303,304,304L,316,316L,CF8,CF3,CF8M,CF3M,1.4308,1.4408,1.4404,SCS13,SCS14,CD4,5AA etcCS:C20, C40, C45 ...