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厂家***法兰球阀美标,日标,国标
厂家***法兰球阀美标,日标,国标国标法兰球阀PN16材质:302中型,301中型,301重型,304中型,304重型,316L重型,Q41F-25P304,Q41F-40P304,Q41F-64P304美标法兰球阀材质304300LB,316300LB.日标法兰球阀材质202,204,316.美标法兰球阀150LB材质202,304,316L.规格口径:DN15,DN20,DN25,DN32,DN40,DN50,DN65,DN,80,DN100,DN250,DN150.)