中压锅炉锅筒上集中下降管坡口型式的发展学兔兔wwwxuetutucom

3WeldingApplications331982-1235t75t40mm,325mm30mm3120mm+230mm,220%,21123mm60mm40mm3Developmentofgroovetypeofcentralizeddown-takeonintermediate-pressureboilerdrumJ-20108744WeldingApplications35200300210%320mm+41UT3mmR7932R79312%3,6.1198%6.2R79356[1].[M].,2007,257~260.[2].[M].:,2005,392~395.200GTAW+SMAWSMAWGTAW+SMAW80%90%98%3.4.10,3.4.1123X499[1].1000..[2].100..J-43201087J-4.4.12