... 1,Adopting forging process for the pipeline. 2,Setup MBUS, connect to GPRS 3,No require ... pipeline2,Forged brass or iron for material3,Ultransonic channel have no reflection surface so it won' ... accuracy and meet EN 1434 metrological class B and CJ128 metrological class 2. More than 6 year long- ... errorYG-RLM(C) series metrological accuracy meet class 2 or class 3.The permissible error conform to related ...