气体减压阀YK43X

蒸汽减压阀Y43H

氨用截止阀J41B

波纹管截止阀 WJ41H

衬氟直流式截止阀J45F

衬胶截止阀J41J

法兰截止阀J41F

角式衬氟截止阀J44F

液化气截止阀J41N

侧装式偏心半球阀PQ340F

衬胶球阀Q41J

铸钢球阀Q41F