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ماذا يعني مواصفات الأنابيب (Line Size) “57/49” في جدول بيانات صمام التحكم؟

2016-02-15View Original

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في جدول بيانات صمام التحكم في الأجهزة، ما معنى مواصفات الأنابيب (Line Size) 57/49؟
Reply #22016-02-15
يجب أن يكون القطر الخارجي للأنبوب 57 مم، والقطر الداخلي 49 مم.
Reply #32016-02-16
عادةً يتم ذكر القطر الخارجي وسمك الجدار فقط، وهذا ليس من الأساليب المعتمدة.

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