Therefore the general construction process scheme is worked out as follows: open trench drainage, work site dried in the sun, conventional butt welding, and pipe laid down into trench.

经过调研和反复现场勘察，确定的总体施工方案为：挖明沟排水，作业带晾晒，正常组对焊接，沉管下沟。

youdao

Therefore the general construction process scheme is worked out as follows: open trench drainage, work site dried in the sun, conventional butt welding, and pipe laid down into trench.

经过调研和反复现场勘察，确定的总体施工方案为：挖明沟排水，作业带晾晒，正常组对焊接，沉管下沟。

youdao