how can we get the natural gas in our daily life?(2)

The related worker must do thesurvey and collection for the later construction. Just like this,

and like this,

however,  some places are quite difficult to get the data, but they cannot miss everything lest it causes the unnecessary trouble in the future construction. We should salute to these people.

After the  Legislative Line technology，workers begin to carry the pipes and clean the pipeline working belt.

After clearance, workers will arrange the pipes averagely to every site according to the distribution of ground pipeline.

Now, prepare for clamp and weld.   

                                    To be continued.