TD Williamson - Welding on In service Pipelines (1993) 

interesting and clear video, particularly because of the reasons explained at each step. inner edge sealing is also important. the gap between the added fitting of larger diameter and the original pipe is not a healthy thing to leave. wonder whether there is any possible method of sealing it off while service is on.

Hoy en día se usa la misma tecnología.

I am your colleague from Iran Gas Company. Thank you for your presence. We are colleagues

How make service for tapping machine module A760

This was very informative, thank you.

Very informative video about a full encirclement welded split sleeve. Thank you so much

No respirators back in da day.

Very helpful

Good Video Sir

Awesome 👍

Very Nice