ASME B16.9 Long Radius Bends | Butt-Weld Pipe Bends | Stainless Steel, Carbon Steel, Alloy Steel & Nickel Alloy Bends
Elite manufactures and supplies Long Radius Bends for industrial piping systems requiring smooth directional changes and reliable flow performance. Long Radius Bends are designed with a larger bending radius to help reduce flow resistance, pressure losses and turbulence compared with tighter-radius bends, depending on the piping configuration and operating conditions.
Our Long Radius Bends are available in carbon steel, stainless steel, alloy steel, duplex, super duplex, copper-nickel, nickel alloys and other project-specified materials. Available configurations include seamless, welded and fabricated bends in different diameters, wall thicknesses, bend angles and radii.
Elite supplies Long Radius Bends for oil and gas pipelines, refineries, petrochemical plants, power generation facilities, water treatment systems and general industrial applications. Products can be manufactured or supplied according to applicable dimensional standards, material specifications, approved drawings and customer requirements.
| Standard & General Types | Material & Specialty Options |
|---|---|
| Butt-Weld Long Radius Bends | Stainless Steel Long Radius Bends |
| ASME B16.9 Long Radius Bends | SS 304 / 304L Long Radius Bends |
| 90° Long Radius Bends | SS 316 / 316L Long Radius Bends |
| 45° Long Radius Bends | Carbon Steel Long Radius Bends |
| 180° Long Radius Bends | Alloy Steel Long Radius Bends |
| Seamless Long Radius Bends | Duplex Steel Long Radius Bends |
| Welded Long Radius Bends | Super Duplex Long Radius Bends |
| Fabricated Long Radius Bends | Copper-Nickel Long Radius Bends |
| Custom-Radius Pipe Bends | Monel Long Radius Bends |
| High-Pressure Pipe Bends | Inconel Long Radius Bends |
| Large-Diameter Pipe Bends | Hastelloy Long Radius Bends |
| Project-Specified Pipe Bends | Titanium Long Radius Bends |
| Specification | Details | |
|---|---|---|
| Product Type | Long Radius Pipe Bends | |
| Applicable Standard | ASME B16.9, where applicable | |
| Other Standards | ASME B16.28, MSS SP-43, where applicable | |
| Size Range | According to product type and project requirements | |
| Construction | Seamless / Welded / Fabricated | |
| Bend Radius | 1D, 1.5D, 2D, 3D, 5D, 6D, 8D, 10D or custom | |
| Bend Angles | 15°, 30°, 45°, 60°, 90°, 135°, 180° or custom | |
| End Connection | Butt-Weld | |
| Wall Thickness | According to applicable schedule or project specification | |
| Materials | Carbon Steel, Stainless Steel, Alloy Steel, Duplex and Specialty Alloys | |
| Manufacturing | According to applicable standard and approved drawings | |
| Inspection | According to approved inspection and test plan | |
| Marking | Size, material grade, schedule and heat number, as applicable | |
| Documentation | MTC, COC and project-specific quality records | |
| Note: A conventional long-radius elbow under ASME B16.9 generally has a center-to-end radius of 1.5 times the nominal pipe size (1.5D). Larger-radius bends, such as 3D, 5D and 10D, are typically specified as pipe bends and may require different manufacturing standards or approved drawings. Actual size ranges, radii and angles depend on the selected product and applicable specification. | ||
| Custom Requirement | Details |
|---|---|
| Nominal Pipe Size | NPS / DN or project specified |
| Outside Diameter | Standard / Project specified |
| Wall Thickness | Schedule / Project specified |
| Material Grade | Required ASTM/ASME grade |
| Manufacturing Type | Seamless / Welded / Fabricated |
| Bend Radius | 1.5D / 3D / 5D / 6D / 10D / Custom |
| Bend Angle | 15° / 30° / 45° / 60° / 90° / 180° / Custom |
| End Connection | Butt-Weld |
| Design Standard | Applicable product or piping standard |
| Operating Conditions | Pressure and temperature specified |
| Heat Treatment | As required |
| NDE Requirements | Project specified |
| Inspection Requirements | ITP / Third-party requirements |
| Marking | Customer requirements |
| Documentation | MTC / COC / Quality reports |
| Test / Examination | Availability |
|---|---|
| Chemical Analysis | Material dependent |
| Tensile & Yield Testing | Material dependent |
| Impact Testing | Where required |
| Hardness Testing | As specified |
| Positive Material Identification (PMI) | As specified |
| Ultrasonic Testing (UT) | As specified |
| Magnetic Particle Testing (MT) | As specified |
| Liquid Penetrant Testing (PT) | As specified |
| Radiographic Testing (RT) | Where applicable |
| Dimensional Inspection | Available |
| Bend Radius Verification | As specified |
| Wall-Thickness Measurement | As specified |
| Ovality Inspection | As specified |
| Weld Inspection | For welded products |
| Hydrostatic Testing | Where required by specification |
| Third-Party Inspection | Available |
| Document | Availability |
|---|---|
| Material Test Certificate (MTC) | Available |
| EN 10204 3.1 Certificate | Where specified |
| EN 10204 3.2 Certificate | Where specified |
| Certificate of Conformance (COC) | Available |
| Dimensional Inspection Report | Available |
| Chemical Analysis Report | Material dependent |
| Mechanical Test Report | Material dependent |
| Heat Treatment Records | Where applicable |
| PMI Report | As specified |
| NDE Reports | As specified |
| Weld Inspection Records | For welded products |
| Quality Assurance Plan (QAP) | Project specific |
| Inspection & Test Plan (ITP) | Project specific |
| Certificate of Origin | Where required |
| Packing List | Available |
| Material Traceability Records | Maintained |
| Third-Party Inspection Records | Where specified |
| Approved Manufacturing Drawings | Where required |
Stainless Steel Long Radius Bends
ASTM A403 WP304/304L, WP304H, WP316/316L, WP316H, WP317L, WP321, WP347 and other applicable stainless steel grades. ASTM A182 grades may apply to other forged components but are not the standard material specification for every butt-weld bend.
Duplex & Super Duplex Steel Long Radius Bends
ASTM A815 duplex and super duplex grades, including applicable UNS S31803, S32205, S32750 and S32760, subject to the product specification and manufacturing route.
Carbon Steel Long Radius Bends
ASTM A234 WPB and applicable grades such as WPC, together with suitable ASTM A860 WPHY grades for high-strength pipeline applications, including WPHY 42, 46, 52, 60, 65 and 70, where specified.
Low-Temperature Carbon Steel Long Radius Bends
ASTM A420 WPL6 and other applicable grades, selected according to design temperature and project requirements.
Alloy Steel Long Radius Bends
ASTM A234 WP1, WP5, WP9, WP11, WP12, WP22 and WP91, where applicable to the required material and manufacturing specification.
Nickel Alloy Long Radius Bends
Nickel 200/201, Monel 400/K500, Inconel 600/601/625/800/825, Hastelloy C276 and Alloy 20, according to the applicable material specification and manufacturing requirements.
Copper-Nickel Long Radius Bends
UNS C70600 (90/10 copper-nickel) and C71500 (70/30 copper-nickel), where suitable for the specified bend design and manufacturing route.
Titanium & Specialty Alloy Long Radius Bends
Titanium and other specialty alloys can be supplied according to customer specifications, corrosion requirements, operating conditions and project needs.
Material selection depends on pressure, temperature, process fluid, corrosion conditions, mechanical properties and applicable piping codes.
90° Long Radius Bends
Designed for 90-degree changes in piping direction while providing a smooth flow path for compatible piping systems.
45° Long Radius Bends
Used where a 45-degree directional change is required in process piping, pipeline and industrial installations.
180° Long Radius Bends
Designed for U-shaped flow paths and return piping arrangements, subject to the specified radius and manufacturing requirements.
Seamless Long Radius Bends
Manufactured from seamless pipe or suitable tubular material where required by the applicable product specification.
Welded Long Radius Bends
Produced using suitable welded pipe or fabrication methods, subject to the applicable manufacturing standard and inspection requirements.
Fabricated Long Radius Bends
Available in larger diameters, special radii and project-specific configurations where conventional standard elbows do not meet the design requirements.
Custom-Radius Pipe Bends
Supplied in specified radii, angles, wall thicknesses and materials according to approved drawings and project requirements.
Elite’s manufacturing and quality processes can include:
Long Radius Bends are used in industrial piping systems and engineered process installations, including:
For quotation, please provide:
Pipe Size + Outside Diameter + Wall Thickness + Material Grade + Bend Radius + Bend Angle + Manufacturing Type + Design Standard + Quantity + Inspection Requirements
Example:
6″ NPS Long Radius Pipe Bend, ASTM A234 WPB Carbon Steel, 90° Bend, 1.5D Radius, Butt-Weld Ends, Wall Thickness According to Specified Schedule, ASME B16.9, EN 10204 3.1 Documentation.
