Line Sizes

Question 1

NDE - Pipe size where RT is preferred for thickness readings

Answer 1

Equal or < 1 NPS 570: 5.7.1

Question 2

NDE - Pipe size where UT thickness readings may require specialized UT equipment

Answer 2

Equal or < 2 NPS 570: 5.7.1

Question 3

Terms - Small bore piping

Answer 3

Equal or < 2 NPS 570: 3.1.86

Question 4

Maximum pipe size normally allowed for threaded pipe

Answer 4

Equal or < 2 NPS 574: 5.2

Question 5

Maximum pipe size normally allowed for socket-welded pipe

Answer 5

Equal or < 2 NPS 574: 5.3.1

Question 6

NDE - Maximum pipe size for performing an elliptical shot (double-wall technique, double-wall view)

Answer 6

3 NPS ASME V: T-271.2.b

Question 7

Pipe size where pipe OD is equal to pipe size (NPS)

Answer 7

Equal or > 14 NPS 574: 4.1.1.2

Question 8

Pipe size where pipe is almost always made using rolled & welded plate

Answer 8

> 16 NPS 574: 4.1.1.1