Supplier of 1D, 3D, 5D, 8D, 10D Buttweld Pipe Bends in Colombo, Sri Lanka

Custom Radius Pipe Bends – ASME B16.9 | ANSI | DIN | Stainless, Carbon, Alloy & Nickel Alloys

Prime Steel Corporation is a specialized exporter of precision-engineered Buttweld Pipe Bends in varying radii including 1D, 3D, 5D, 8D, and 10D, serving clients in Colombo and industrial hubs across Sri Lanka. These bends are designed to change the direction of pipe flow without restricting pressure or causing turbulence. The “D” represents the centerline radius in relation to the pipe’s nominal diameter – for instance, a 3D Bend has a bend radius three times the pipe’s diameter. From tight-radius 1D Pipe Bends for compact installations to long-radius 10D Pipe Bends for smooth flow in critical pipelines, our range meets diverse requirements in oil & gas, chemical processing, power generation, water desalination, and marine applications. Each pipe bend is manufactured as per ASME B16.9, with precision forming, stress-relieving, and testing to ensure high strength, dimensional accuracy, and corrosion resistance.

Types of Pipe Bends We Manufacture:

  • 1D Pipe Bend – Tight radius, compact flow changes, used where space is limited
  • 3D Pipe Bend – Standard radius for smooth transitions in general piping systems
  • 5D Pipe Bend – Ideal for minimizing pressure drop in process piping
  • 8D Pipe Bend – Used in high-pressure or high-velocity pipelines for better flow dynamics
  • 10D Pipe Bend – Longest radius for critical systems requiring low turbulence and erosion control

Engineering & Dimensional Range:

  • Size Range: ½” NB to 48” NB
  • Bend Radius: 1D to 10D (custom radii available upon request)
  • Angle of Bend: 15°, 30°, 45°, 60°, 90°, 180°, or as per drawing
  • Wall Thickness: SCH 10 to SCH XXS
  • End Connection: Beveled Ends (BE) as per ASME B16.25

Standards We Follow:

  • ASME B16.9 – Factory-made wrought steel buttwelding fittings
  • MSS SP-43 – Light-weight bends for corrosion-resistant service
  • ANSI / DIN / EN – Available on request for international projects

Materials Offered:

  • Stainless Steel: A403 WP304 / 316 / 321 / 316L / 904L
  • Carbon Steel: A234 WPB / WPC / A420 WPL6 (Low Temp)
  • Alloy Steel: A234 WP11 / WP22 / WP91
  • Nickel Alloys: Inconel 600 / 625, Monel 400, Hastelloy C276, Alloy 20
  • Duplex & Super Duplex: UNS S31803, S32750, S32760

All materials come with mill test certificates and meet global export quality norms.

Applications in Sri Lankan Industries:

  • Refineries & Petrochemicals – Smooth transitions in high-pressure lines
  • Power Plants – Turbine & boiler piping systems
  • Shipbuilding & Offshore Platforms – For corrosion resistance and flow dynamics
  • Water Infrastructure Projects – Long-radius bends to reduce pressure drop
  • Food, Dairy & Beverage – Smooth internal surfaces to maintain hygiene

Looking for long-radius or custom pipe bends? Email our team at:
sales@primesteelcorp.com