Bend Radius Selection
3DRadius = 3 x Nominal Pipe Diameter (Tight Induction)
5DRadius = 5 x Nominal Pipe Diameter (Standard Pipeline Piggable)
6D / 8DRadius = 6D to 8D (Slurry & Refining)
10DRadius = 10 x Nominal Pipe Diameter (Ultra-Low Resistance)
Product page
SKYLAND
ASME B16.9 / B16.49 Custom Radius Induction Pipe Bends (3D, 5D, 6D, 8D, 10D)
Skyland High-Frequency Hot Induction Pipe Bends are manufactured to ASME B16.49, ASME B16.9, and ISO 15590-1. Engineered for long-distance oil & gas transmission, refinery routing, and abrasive slurry pipelines, these bends offer large bending radii (3D, 5D, 6D, 8D, 10D) that permit smooth passage of intelligent pipeline inspection gauges (PIGs) while minimizing pressure drop and wall thinning.
Standard compliance: ASME B16.49, ASME B16.9, MSS SP-75, and ISO 15590-1
Available in bend radii: 3D, 5D, 6D, 8D, 10D, and custom large radius bends (up to 20D)
Bending angles: 15°, 30°, 45°, 60°, 90°, 120°, 135°, and 180° with custom tangent leg extensions
Sizes: 2" to 48" NB (DN 50 to DN 1200) with wall thicknesses up to 60 mm
Ready for quotationShare your range, connection and case requirement.
Talk to ATHStandardsASME B16.49, ASME B16.9, MSS SP-75, ISO 15590-1
Bend Radii3D, 5D, 6D, 8D, 10D, 12D, 15D, 20D
Bend Angles15° to 180° (custom angle increments ±0.5°)
Size Range2" to 48" (DN 50 to DN 1200)
Wall ThicknessSch 20 up to 60 mm Heavy Wall
MaterialsAPI 5L Gr. B through X80, A234 WPB, A420 WPL6, Duplex 2205
CertificationsEN 10204 3.1 / 3.2 (with DNV, BV, Lloyds witness), ISO 9001:2015
Pipeline Engineering
Custom Induction Pipe Bend Specifications
Select nominal diameter, bending radius (3D/5D/10D), bending angle, and tangent leg lengths.
StandardASME B16.49 / ISO 15590-1
Radii3D, 5D, 6D, 8D, 10D
Piggable100% PIG Passing Guaranteed
Sizes2" to 48" NB
Part Number Example
SKL-IB-120-90D-5D-X65-SCH80
SKLBrandSkyland Metal & Alloys
IBTypeInduction Pipe Bend
120Size12" NPS (DN 300)
90DAngle90 Degree Bend
5DRadius5D Bend Radius (60 inches / 1524 mm)
X65MaterialAPI 5L / WPHY 65 High Yield
SCH80ScheduleSchedule 80
Technical specifications
StandardASME B16.49 / ASME B16.9 / MSS SP-75
Tangent LengthsStandard 500 mm / 1000 mm tangent straight legs (custom available)
Post-Bend Heat TreatmentQuench & Temper or Normalizing per metallurgical spec
Operational Notes
5D and 10D bends minimize slurry erosion and pressure drops in heavy crude and mining tailings.
Calibrated gauging plate inspection confirms inside diameter clearance across the full bend arc.
Induction Bending Technology
Induction bending utilizes high-frequency electromagnetic coils to heat a narrow circumferential band of the pipe to forging temperature (850°C - 1050°C) while pushing it through a pivoting radial arm. Water quenching immediately follows, locking in dimensional accuracy and grain structure.
Large radius bends allow intelligent PIG tools to navigate pipeline bends without jamming, critical for integrity tracking in cross-country transmission lines.