... ,316,316L,wcb,etc 3.size:4'' 4.we can do the valve parts according to ... the clients' requir 1.butterfly valve2.material:304,316,316L,wcb, ... etc3.size:4''4.Standard:ASTM,AISI,DIN,JIS etc5.Weight range:0.01--40kg6.Application:industrial parts,machinery parts,valve ... bath equipment and petroleum equipment etc..9. Products: valve, flange, elbow, screw nut, screw bolt, pipe ...