正航替代承天倍達濾芯主要是以不銹鋼編織網、燒結網、鐵編制網、為材質的，由于它使用的濾料主要是玻纖濾紙、化纖濾紙、木漿濾紙，所以它有同心率高、承受壓力大、直度好，不銹鋼材質，不帶任何毛刺，保證使用壽命長的特點，它的構造中由單層或多層金屬網與濾料制成，在具體使用時它的層數與構成絲網的目數根據不同的使用條件與用途而定。

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