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讨论主管道安装工序,针对主管道镗孔处壁厚存在超差的情况,通过对主管道的镗孔方案进行分析,分别论证了3种不同的镗孔方式,找出最佳优化方案,减少镗孔车削量,保证了主管道壁厚要求和在役检查要求。
The main pipeline installation process is discussed. According to the situation that the wall thickness of the boring hole in the main pipe is out of tolerance, the boring scheme of the main pipeline is analyzed and three different boring methods are respectively demonstrated to find out the optimal optimization scheme to reduce Boring amount of turning, to ensure that the main pipeline wall thickness requirements and in-service inspection requirements.