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鍛鋼焊接止回閥H61Y/H11YForging steel welding check valve H61Y/H11Y公稱通徑 Nominal diameter: DN10-DN100公稱壓力 Nominal pressure: 300Lb?2500Lb適用介質 Applicable medium:油、氣 Oil,steam適用溫度 Applicable temperature: -10℃- 550℃