Answer / vikram budhiraja

No, It is the pipe "diameter" , not the pipe thickness.

Answer / saqib mushtaq

D is refer to "Pipe Diameter".
If you pipe diameter is 6 Inches.
This is mean that the pipe where Ultrasonic Flow Tx is installed must straight run 120 Inches on Upstream and 30 Inches on Downstream.

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send me model hpcl questions pleas..........my mail id mohideen.dharvesh@gmail.com

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