... to overseas 3) More than 20 years manufacture experience... Structure: Gate Production enforce standard Design and manufacture --- Api600,API6DFace to Face ... ,25Cr2MoV,F304,F316,F304L,F316LSealing Face --- 13Cr,STL,PTFE,NylonPacking --- Flexible Graphite,Enhanced,Graphite ,SFB/260,PTFEWorking Temperature --- ≤200 oC - ≤ ... --- Water,Steam,Peroleum Propoducts,Nitric acid,Acetic acid,Urea ANSI gate valve