A Flanged Elbow Assembly is a prefabricated piping component consisting of an elbow fitted and welded with flanges at both ends in the factory. The elbow is manufactured in accordance with ASME B16.9, while the flanges are manufactured to ASME B16.5 or ASME B16.47, as applicable. Weld neck flanges are commonly selected based on the required pressure rating and sealing requirements.
The assembly is fitted, welded, inspected by non-destructive testing (NDT), and protected at the flange faces before delivery. On-site installation requires only bolting the assembly to the adjoining flanges. This factory-prefabricated solution reduces field welds and potential leak points, helps ensure flange parallelism and alignment, shortens installation time, and allows easier disassembly for future maintenance and inspection.
| Item | Specification |
|---|---|
|
Product Name |
Flanged Elbow Assembly |
|
Product Type |
90 Degree Elbow, 45 Degree Elbow |
|
Elbow Angle |
45°, 90°, 180° |
|
Nominal Pipe Size |
Customization |
|
Connection Type |
Flanged End |
|
Flange Type |
Weld Neck, Slip-On, Threaded, Socket Weld |
|
Flange Standard |
ASME B16.5; ASME B16.47; |
|
Pressure Class |
Class 150, 300, 400, 600, 900, 1500, 2500 |
|
Facing Type |
RF, FF, RTJ |
|
Elbow Material |
Carbon Steel, Alloy Steel, Stainless Steel |
|
Flange Material |
Carbon Steel, Alloy Steel, Stainless Steel |
|
Manufacturing Process |
Forging, machining, forming |
|
Dimensions |
According to the applicable dimensional standard or approved drawing |
|
Surface Treatment |
Black paint, anti-rust oil, galvanizing or other specified coating |
|
Documentation |
Material Test Certificate (MTC), inspection report and other agreed documents |
| Material Category | ASTM Material Standard | Common Grades | Typical Applications |
|---|---|---|---|
| Carbon Steel | ASTM A234/A234M | WPB, WPC | General industrial piping and moderate- to high-temperature service |
| Low-Temperature Carbon Steel | ASTM A420/A420M | WPL6, WPL3 | Low-temperature piping systems |
| Austenitic Stainless Steel | ASTM A403/A403M | WP304/304L, WP316/316L | Corrosive environments and chemical processing systems |
| High-Strength Ferritic Steel | ASTM A860/A860M | WPHY 42, WPHY 52, WPHY 60, WPHY 65, WPHY 70 | High-pressure oil and gas transmission pipelines |
| Alloy Steel | ASTM A234/A234M | WP5, WP9, WP11, WP22 | High-temperature service and alloy steel piping systems |
Our Flanged Elbow Assemblies are designed and manufactured in accordance with applicable international standards. The flanges comply with ASME B16.5 and ASME B16.47, while the material standards include ASTM A234/A234M, ASTM A105/A105M, and ASTM A403/A403M.
Quality control covers material inspection, dimensional inspection, flange-to-elbow alignment and concentricity checks, and non-destructive testing (NDT), such as radiographic testing (RT) and ultrasonic testing (UT).
Flanged Elbow Assembly can be used in industrial piping systems where directional changes and detachable flanged connections are required. Suitable applications depend on the material, design pressure, operating temperature and fluid characteristics.
1.Oil and Gas: Piping connections in processing facilities, gathering systems and related industrial installations.
2.Petrochemical Plants: Directional changes in process piping carrying compatible fluids.
3.Power Generation: Piping systems designed for the specified pressure and temperature conditions.
4.Water Treatment: Industrial water supply, treatment and distribution systems where the selected material is suitable.
5.General Industrial Piping: Equipment connections, maintenance-accessible piping sections and other systems requiring flanged joints.
Before selection, verify flange compatibility, pressure-temperature ratings, material suitability and applicable project standards. Corrosive, high-temperature or low-temperature services may require specific materials and additional inspection requirements.
What is a Flanged Elbow Assembly?
A Flanged Elbow Assembly is a piping component that changes the direction of flow and uses flanged ends to connect with compatible pipes, valves or equipment. Its design and dimensions depend on the specified piping system.
What elbow angles are available?
Common configurations include 45-degree and 90-degree elbows. Other angles may be available for specific designs or project requirements. Confirm the required angle and end-to-end dimensions before ordering.
What materials are available for Flanged Elbow Assembly?
Depending on the design and manufacturing method, material options may include carbon steel, alloy steel and stainless steel. The selected grade should meet the operating pressure, temperature, corrosion resistance and applicable material specification requirements.
Which standards apply to Flanged Elbow Assembly?
ASME B16.5 and ASME B16.47 may apply to the flange design, depending on size and configuration. Material standards such as ASTM A234/A234M, ASTM A105/A105M and ASTM A403/A403M apply to their respective product forms and material categories. The correct standards must be confirmed for the actual elbow and flange assembly.
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