Long Radius Bends and Piggable Bends are specialized pipe fittings that help change the direction of flow in piping systems while keeping pressure loss and flow turbulence to a minimum. A Long Radius (LR) Bend usually has a centerline radius that’s 1.5 times the pipe diameter (1.5D), which allows for smoother fluid flow compared to short radius bends. These bends are perfect for high-pressure and high-velocity pipelines, as they help reduce erosion, vibration, and stress on the system. You’ll often find Long Radius Bends in industries like oil and gas, petrochemical, power, and water treatment.
Standard – ANSI/ASME :ASTM A403 / ASME SA403, ANSI B16.9, ASME B16.25, ASME B16.28, MSS SP-43.
DIN : DIN2605, DIN2615, DIN2616, DIN2617, DIN28011
EN : EN10253-1, EN10253-2
Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Type : Seamless / ERW / Welded / Fabricated
Size: 1/2″–60″
Form: Long Radius Bend, Induction Bend, With R=3D, 5D, 6D, 8D, 10D & Customized Bend
Standard – ANSI/ASME :ASTM A403 / ASME SA403, ANSI B16.9, ASME B16.25, ASME B16.28, MSS SP-43.
DIN : DIN2605, DIN2615, DIN2616, DIN2617, DIN28011
EN : EN10253-1, EN10253-2
Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Type : Seamless / ERW / Welded / Fabricated
Size Range : 2″NB TO 18″ NB ANSI B 16.9 IN
Form: Piggable Bends
Long Radius and Piggable Bends are typically made from high-grade materials such as carbon steel, stainless steel, and alloy steel, ensuring strength and durability. The composition often includes elements like carbon, chromium, molybdenum, and nickel, providing resistance to corrosion, heat, and pressure. Mechanically, these bends offer excellent tensile strength, yield strength, and elongation properties, ensuring they can withstand high-pressure systems. With smooth internal surfaces, they allow for optimal fluid flow, while their radius ensures minimal turbulence and pressure loss, making them suitable for complex pipeline networks.
Tolu Fittings is a leading supplier of Long Redius and Piggable Bend in Abuja, Nigeria. We offer an extensive range of Collar, renowned for their excellent corrosion resistance and high strength, which makes them perfect for demanding industrial applications like chemical processing, marine environments, and high-temperature systems. With a commitment to quality and reliable delivery, we ensure our clients receive top-tier products tailored to meet the specific needs of various industries.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
On the flip side, a Piggable Bend is crafted with a smooth internal surface and a radius large enough to let a “pig” — a pipeline inspection gauge or cleaning device — pass through for maintenance and inspection. These bends make sure that the pig can travel through the pipeline without any hiccups, keeping everything clean and running efficiently. Piggable Bends are typically made with precise tolerances and smooth welds to meet the demands of pigging operations.
Long Radius and Piggable Bends offer several key advantages, including smooth internal surfaces that minimize flow turbulence and reduce pressure drops in pipeline systems. Their gentle curves ensure a more efficient flow of fluids, enhancing overall system performance. The durability and resistance to corrosion, heat, and pressure, especially in materials like stainless steel and alloy steel, extend the lifespan of the fittings. Additionally, their ability to accommodate pigs (cleaning tools) ensures easier maintenance and reduces the risk of blockages, making them ideal for complex and demanding piping applications.
Yes, custom sizes for Long Redius and Piggable Bend are available at Tolu Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@tolufittings.com.
Stainless Steel Long Radius Bend : ASTM A403 WP316/316L, ASTM A403 WP304/304L, ASTM A182 F316L, 304L, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L
Carbon Steel Long Radius Bend : ASTM A234, ASME SA234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70.
Alloy Steel Long Radius Bend : ASTM A234, ASME SA234 WP1 / WP5 / WP9 / WP11 / WP22 / WP91
Duplex Steel Long Radius Bend : ASTM A815, ASME SA815 UNS No S31803, S32205
Super Duplex Long Radius Bend : ASTM A815, ASME SA815 UNS No S32750, S32950
Nickel Alloy Long Radius Bend : ASTM B336, ASME SB336, Nickel 200 (UNS No. No2200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II), Cupro-Nickel 70/30, CuNi10Fe1Mn, CuNi30Mn1Fe.
Low Temperature Carbon Steel Long Radius Bend : ASTM A420 WPL3, A420 WPL6
Stainless Steel Piggable Bend : ASTM A403 WP316/316L, ASTM A403 WP304/304L, ASTM A182 F316L, 304L, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L
Carbon Steel Piggable Bend : ASTM A234, ASME SA234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70.
Alloy Steel Piggable Bend : ASTM A234, ASME SA234 WP1 / WP5 / WP9 / WP11 / WP22 / WP91
Duplex Steel Piggable Bend : ASTM A815, ASME SA815 UNS No S31803, S32205
Super Duplex Piggable Bend : ASTM A815, ASME SA815 UNS No S32750, S32950
Nickel Alloy Piggable Bend : ASTM B336, ASME SB336, Nickel 200 (UNS No. No2200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II), Cupro-Nickel 70/30, CuNi10Fe1Mn, CuNi30Mn1Fe.
Low Temperature Carbon Steel Piggable Bend : ASTM A420 WPL3, A420 WPL6
| Nominal PN (MPa) | DN | Thread D | Pipe Specification DH×s | L1 | L2 | L3 (Not less than) | L (Not less than) | R |
| 32.0 | 175 | M240×6 | 245×36 | 120 | 130 | 360 | 1095 | 735 |
| 200 | M265×6 | 273×40 | 130 | 140 | 390 | 1209 | 819 | |
| 225 | M320×6 | 325×50 | 175 | 185 | 525 | 1500 | 975 | |
| 250 | M350×6 | 355.6×55 | 195 | 205 | 580 | 1650 | 1070 | |
| 22.0 | 175 | M215×6 | 219×24 | 100 | 110 | 300 | 957 | 657 |
| 200 | M240×6 | 245×26 | 110 | 120 | 330 | 1065 | 735 | |
| 225 | M265×6 | 273×29 | 115 | 125 | 345 | 1164 | 819 | |
| 250 | M295×6 | 299×32 | 120 | 130 | 360 | 1257 | 897 |
Both Long Radius and Piggable Bends come in materials like carbon steel, stainless steel, and alloy steel, depending on the service conditions. They play a crucial role in industries such as oil and gas transmission, refineries, and chemical plants, where reliable flow control and easy maintenance are vital for safe and efficient operations.
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