Table 5 Specific operating conditions set under the influence of core pitch.

From: Study on the fastening characteristics of preformed helical fittings considering the surface effect of transmission lines

Operating condition

Preformed armor rod diameter (mm)

Core diameter (mm)

Size of reformed armor rod/core mesh (mm)

Pitch of core (mm)

Pitch of preformed armor rods (mm)

9

5.2

15.8

1.0/2.0

150

160–190 (Increment = 10)

10

7.0

20.0

160