Technical Information for Induction Bending

● Minimum Tangent Length for Induction Bending

NOM. DIA. O.D R/D(Min) Radius Clamp Length
C1 C2(+) C2(-)
100 114.3 1.5 171 280 280 450
125 139.8 1.5 210 320 320 "
150 165.2 1.5 248 360 360 "
200 216.3 1.5 324 " 380 "
250 267.4 1.5 401 " 380 "
300 318.5 1.5 478 480 460 550
350 355.6 2 711 510 " "
400 406.4 2 813 530 550 "
450 457.2 2 914 630 650 "
500 508 2 1016 " " "
550 558.8 2 1118 " " "
600 609.6 2 1219 " " "
- - - - Type-A Type-B Type-C
Type-A

Type-A

Type-B

Type-B

Type-C

Type-C

● Induction Bending Tolerance

Ellipticity

Ellipticity

Thickness Reduction

Thickness-Reduction

Wrinkle or Swelling

Wrinkle-or-Swelling

Tolerance Range

Bending Method Pipe Material Division Bending Radius
1.5D≤R<2D 2D≤R≤2.5D 3D≤R
Induction Bending Steel Pipe E (%) Max.7 Max.6 Max.5
Tr (%) Max.22 Max.20 Max.12.5
H(mm) H≤1/100 D