| Nominal Pipe Size in |
Outside diameter O.D.(mm) |
BENDING RADIUS(mm) |
Angle Bending
θ |
Tangent Length at Each end |
Wall Thickness (mm) |
| 3D |
4D |
5D |
6D |
8D |
10D |
| 3" |
89 |
267 |
356 |
445 |
534 |
712 |
890 |
90°,60°
45°,30°
22.5°,or
as per
the choice
of purchaser |
350 |
Sch STD,
sch10,Sch20,
Sch30,Sch40,
Sch80,etc.
or as per
the choice
of purchaser |
| 4" |
114 |
342 |
456 |
570 |
684 |
912 |
1140 |
350 |
| 6" |
168 |
504 |
672 |
840 |
1008 |
1344 |
1680 |
350 |
| 8" |
219 |
657 |
876 |
1095 |
1314 |
1752 |
2190 |
700 |
| 10" |
273 |
819 |
1092 |
1365 |
1638 |
2184 |
2730 |
700 |
| 12" |
325 |
975 |
1300 |
1625 |
1950 |
2600 |
3250 |
700 |
| 14" |
356 |
1068 |
1424 |
1780 |
2136 |
2848 |
3560 |
700 |
| 16" |
406 |
1218 |
1624 |
2030 |
2436 |
3248 |
4060 |
700 |
| 18" |
457 |
1371 |
1828 |
2285 |
2742 |
3656 |
4570 |
1000 |
| 20" |
508 |
1524 |
2032 |
2540 |
3048 |
4064 |
5080 |
1000 |
| 22" |
559 |
1677 |
2236 |
2795 |
3354 |
4472 |
5590 |
1000 |
| 24" |
610 |
1830 |
2440 |
3050 |
3660 |
4880 |
6100 |
1000 |
| 26" |
660 |
1980 |
2640 |
3300 |
3960 |
5280 |
6600 |
1D (Outside
diameter of
bend)or
as per
the choice
of purchaser |
| 28" |
711 |
2133 |
2844 |
3555 |
4266 |
5688 |
7110 |
| 30" |
762 |
2286 |
3048 |
3810 |
4572 |
6096 |
7620 |
| 32" |
813 |
2439 |
3252 |
4065 |
4878 |
6504 |
8130 |
| 34" |
864 |
2592 |
3456 |
4320 |
5184 |
6912 |
8640 |
| 36" |
914 |
2742 |
3656 |
4570 |
5484 |
7312 |
9140 |
| 38" |
965 |
2895 |
3860 |
4825 |
5790 |
7720 |
9650 |
| 40" |
1016 |
3048 |
4064 |
5080 |
6096 |
8128 |
10160 |
| 42" |
1067 |
3201 |
4268 |
5335 |
6402 |
8536 |
10670 |
| 44" |
1118 |
3354 |
4472 |
5590 |
6708 |
8944 |
11180 |
| 46" |
1168 |
3504 |
4672 |
5840 |
7008 |
9344 |
11680 |
| 48" |
1219 |
3657 |
4876 |
6095 |
7314 |
9752 |
12190 |
| 50" |
1270 |
3810 |
5080 |
6350 |
7620 |
10160 |
12700 |
| 52" |
1321 |
3963 |
5284 |
6605 |
7926 |
10568 |
13210 |
| 54" |
1372 |
4116 |
5488 |
6860 |
8232 |
10976 |
13720 |
| 56" |
1422 |
4266 |
5688 |
7110 |
8532 |
11376 |
14220 |
Bend end preparation:Welding ends to be beveled as per ASME B16.25 or as per specified by purchaser.
Induction Pipe Bending Standard Bend Tolerances
Bend Angle:±1/2°
Bend Radius:±1%
Bend Plane:±1°
End squareness
Size NPS36" and smaller:2.4mm(0.09")
Size Greater than NPS36":3.0mm(0.12")
Linear Dimensions
Size Nps24" and smaller:±5mm(0.19")
Size Greater than NPS 24":±6mm(0.25")
Thinning: <0.10% of the bend nominal wall thickness
or ≤50D/R(%)(R=bend centerline radius,
D=nominal outside diameter of starter stock)
or ≤0.05% of the nominal wall thickness of the matching pipe. Size:
Mother Pipe: Carbon Steel, Alloy Steel, Stainless Steel, High Chrome Steel, High Nickel High Chrome Steel, Monel Metal, Copper Alloy, Titanium.
