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Início>Tubulação e acessórios Fengye HDPE>Anéis de apoio

Anéis de apoio

As we all know, backing rings is matched with flange adaptor. There are ASME B16.5 steel backing rings, pp-steel backing rings, steel backing rings and steel blind flange. For steel backing rings, there are galvanized and plactic-sprayed two kinds of surface treatment.