มาตรฐานท่อร่องเกลียวขนาดเส้นผ่านศูน

Standard pipe thread groove diameter 3/8 "at the thickness of the pipe with a spiral groove that we use only a 3/8"

can describe the physical characteristics of the pipe in the picture below

.From the photo, I think it can bring to your work coil
.

Standard grooved pipe screw diameter 3/8 "as of now the spiral groove tube thickness we used, there is only one is 3/8"

can describe the physical characteristics of the pipe from the picture below as follows:

.From the pictures, I think it can bring to your coil work
.

the spiral groove standard pipe size diameter 3/8." At this point the thickness of the spiral groove tube we use is only one is 3/8."

can explain the physical characteristics of a picture at the bottom of the tube as follows:

from a picture I think that it can be used to work with your coil