[KongchangAI]
Unverified90% confidenceDecision RuleTime unknown

家用燃气管道接口以DN15(4分)和DN20(6分)为主流,选购前需确认灶前阀接口规格,DN15对应管径约15mm,错配会导致漏气风险,无法用变径接头强行安装

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