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可提供前后各2D或特殊要求長度的測量管段，（D為管道內徑）
We can provide 2D measurement pipe sections or those of lengths of special requirements for the front and back respectively (D refers to the pipe inside diameter).
用途：適用于前后直管段長度不能滿足單孔孔板標準要求的高溫或高壓下液體、蒸汽和熱網管道的流量測量、控制和調節。
Use: It is fit for the measurement,control and adjustment of the flow of liquid ,steam and heat network piping under a high temperature or pressure which the lengths of the front and back pipe can not meet the requirments of single hole orifice .
特點：它具有前后直管段長度要求低、測量精度高、耐沖擊、使用壽命長的特點。
Features：a low requirement of lengths for the front and back pipe, a hign measurement precision, impact resistance, a long service life etc.
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