Mechanical strength of pipe coating and its thickness of standard paintcoat must be ensured in the pipe coating production lines,two pipes in the course of coating must be flexibly jointed.
管敷生产线
保证管件
敷层的机械强
及标准
层的厚
,两根管子在
敷过
保证柔性顶接,连接处不能有缝隙。