ASME B16.28 Wrought Steel Elbows
ASME B16.28 Elbows : Specifications | Materials | Dimensions | Weight Chart | Tolerances | FAQ
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We are a leading manufacturer and global supplier of ASME B16.28 Wrought Steel Elbows, offering long and short radius elbows in carbon steel, stainless steel, and alloy steel. Each elbow is precision-engineered to meet stringent ASME standards, ensuring high-pressure, high-temperature, and corrosion-resistant performance.
Our company emphasizes a quality-driven and client-focused approach, with strict inspection at every stage, on-time delivery, and technical support for customized piping solutions. By combining advanced manufacturing, ethical practices, and international compliance, we provide durable and reliable elbows to industries including oil & gas, petrochemical, power, and marine, serving clients worldwide with efficiency and precision.
ASME B16.28 Wrought Elbows are manufactured using high-quality wrought steel to provide enhanced mechanical strength and uniform metallurgical properties. These elbows are designed to handle dynamic stresses, cyclic pressure loads, and thermal expansion in piping systems. The short and long radius designs allow engineers to optimize flow efficiency, minimize turbulence, and reduce vibration in critical pipelines.
These elbows are essential in high-pressure or corrosive environments, offering precise alignment and consistent bend geometry that supports long-term reliability. They are widely applied in industrial sectors such as chemical processing, power generation, offshore platforms, and refinery systems, where strict adherence to ASME B16.28 tolerances ensures safe and efficient fluid transport.
Our manufacturing process integrates state-of-the-art forging, heat treatment, and precision machining to produce elbows that meet exact dimensional and metallurgical specifications. We prioritize material traceability, pressure testing, and surface finish control, ensuring each fitting performs reliably in critical piping systems. With a focus on innovation, sustainability, and global standards compliance, we consistently deliver high-quality elbows that provide long service life and operational safety across demanding industries worldwide.
ASME B16.28 Wrought Elbow Specifications
Wrought Steel Elbows - Materials, Grades & Standards
| Material Type | Common Grades / Specs |
Standards | Typical Applications |
|---|---|---|---|
| Carbon Steel | ASTM A234 WPB, WPC, WPL6 | ASME B16.28, ASTM A234 | Oil & Gas, Power, Water, Chemical |
| Stainless Steel | ASTM A403 WP304, WP304L, WP316, WP316L, WP321 |
ASME B16.28, ASTM A403 | Corrosive environments, Chemical, Marine |
| Alloy Steel | ASTM A234 WP5, WP9, WP11, WP22, WP91 |
ASME B16.28, ASTM A234 | High-temperature, High-pressure systems |
| Nickel & High-Nickel Alloys | ASTM B564 (Inconel, Monel, Hastelloy variants) |
ASME B16.28, ASTM B564 | Extreme corrosion or high-temperature service |
ANSI/ASME B16.28 Wrought Elbows– Size Range & Dimensions
| NPS (inches) |
Outside Diameter (OD, mm) |
Long Radius (LR, mm) |
Short Radius (SR, mm) |
Wall Thickness (t, mm) |
End-to-End (EE, mm) |
Notes |
|---|---|---|---|---|---|---|
| ½″ | 21.3 | 38.1 | 19.1 | As per pipe schedule | 76 | Standard LR & SR |
| ¾″ | 26.7 | 47.6 | 23.8 | As per pipe schedule | 95 | |
| 1″ | 33.4 | 66.7 | 33.4 | As per pipe schedule | 127 | |
| 1½″ | 48.3 | 96.5 | 48.3 | As per pipe schedule | 178 | |
| 2″ | 60.3 | 120.7 | 60.3 | As per pipe schedule | 229 | |
| 3″ | 88.9 | 177.8 | 88.9 | As per pipe schedule | 305 | |
| 4″ | 114.3 | 228.6 | 114.3 | As per pipe schedule | 381 | |
| 6″ | 168.3 | 337.0 | 168.3 | As per pipe schedule | 508 | |
| 8″ | 219.1 | 438.2 | 219.1 | As per pipe schedule | 610 | |
| 10″ | 273.0 | 546.0 | 273.0 | As per pipe schedule | 762 | |
| 12″ | 323.9 | 648.0 | 323.9 | As per pipe schedule | 914 | |
| 14″ | 355.6 | 711.0 | 355.6 | As per pipe schedule | 1000 | |
| 16″ | 406.4 | 813.0 | 406.4 | As per pipe schedule | 1143 | |
| 18″ | 457.2 | 914.0 | 457.2 | As per pipe schedule | 1270 | |
| 20″ | 508.0 | 1016.0 | 508.0 | As per pipe schedule | 1400 | |
| 24″ | 609.6 | 1219.0 | 609.6 | As per pipe schedule | 1524 |
ASME B16.28 Elbows – Weight Chart
| NPS (inches) | Schedule | OD (mm) | Elbow Type | Wall Thickness (mm) | Approx. Weight (kg) |
|---|---|---|---|---|---|
| ½″ | Sch 10 | 21.3 | LR | 2.77 | 0.25 |
| ½″ | Sch 10 | 21.3 | SR | 2.77 | 0.22 |
| ½″ | Sch 40 | 21.3 | LR | 3.91 | 0.35 |
| ½″ | Sch 40 | 21.3 | SR | 3.91 | 0.30 |
| ½″ | Sch 80 | 21.3 | LR | 6.02 | 0.50 |
| ½″ | Sch 80 | 21.3 | SR | 6.02 | 0.45 |
| 1″ | Sch 10 | 33.4 | LR | 2.77 | 0.75 |
| 1″ | Sch 40 | 33.4 | LR | 3.91 | 0.95 |
| 1″ | Sch 80 | 33.4 | LR | 6.02 | 1.40 |
| 2″ | Sch 10 | 60.3 | LR | 2.87 | 2.30 |
| 2″ | Sch 40 | 60.3 | LR | 3.91 | 3.20 |
| 2″ | Sch 80 | 60.3 | LR | 6.02 | 4.70 |
| 4″ | Sch 10 | 114.3 | LR | 3.38 | 7.5 |
| 4″ | Sch 40 | 114.3 | LR | 6.02 | 10.5 |
| 4″ | Sch 80 | 114.3 | LR | 9.27 | 15.0 |
| 6″ | Sch 10 | 168.3 | LR | 3.91 | 16.5 |
| 6″ | Sch 40 | 168.3 | LR | 6.02 | 23.5 |
| 6″ | Sch 80 | 168.3 | LR | 9.27 | 33.0 |
| 8″ | Sch 10 | 219.1 | LR | 4.19 | 28.0 |
| 8″ | Sch 40 | 219.1 | LR | 6.02 | 40.0 |
| 8″ | Sch 80 | 219.1 | LR | 9.27 | 55.0 |
| 12″ | Sch 10 | 323.9 | LR | 4.78 | 63.0 |
| 12″ | Sch 40 | 323.9 | LR | 6.02 | 85.0 |
| 12″ | Sch 80 | 323.9 | LR | 9.27 | 120.0 |
Wrought Elbows - Tolerances as per ASME B16.28
| Parameter | Tolerance | Notes |
|---|---|---|
| Outside Diameter (OD) | ±1.6 mm for NPS ≤ 24″±3.2 mm for NPS > 24″ | Ensures proper fit with corresponding pipe |
| Center-to-End / End-to-End | ±1.6 mm for NPS ≤ 24″±3.2 mm for NPS > 24″ | Applies to both Long Radius (LR) and Short Radius (SR) elbows |
| Wall Thickness (t) | ±12.7% of nominal for small sizes±3.2 mm for larger sizes | As per material and schedule requirements |
| Bend Radius | ±1.6 mm for NPS ≤ 24″±3.2 mm for NPS > 24″ | LR = 1.5 × NPS, SR = 1 × NPS |
| Angle | ±1° | For 45° and 90° elbows |
| End Squareness / Planeness | ±1° / ±1.6 mm | Ensures proper alignment during welding |
| Out-of-Roundness | ≤1.6 mm | Ensures tight fit with mating pipes |
What are ASME B16.28 Wrought Steel Elbows and their types?
- Definition: ASME B16.28 elbows are wrought steel pipe fittings used to change the direction of flow in piping systems.
-
Types:
- Long Radius (LR) Elbows: Radius = 1.5 × NPS; provides smoother flow and reduced pressure drop.
- Short Radius (SR) Elbows: Radius = 1 × NPS; used where space is limited.
- Angles: Commonly available in 45° and 90°, with custom angles possible on request.
- Applications: Oil & gas, petrochemical, power plants, chemical plants, water treatment, and marine systems.
How do B16.28 elbows handle pressure and temperature?
- Pressure and temperature rating is schedule and material dependent.
-
Important Points:
- Higher schedule = thicker wall = higher allowable pressure.
- Pressure classes can range from 150# to 2500#, depending on material and schedule.
- High alloy steels and stainless steels can handle corrosive and high-temperature environments.
- Proper selection ensures minimal stress concentration and leak-free performance.
What are the advantages of using ASME B16.28 elbows?
- Flow Efficiency: Long radius elbows reduce turbulence and pressure drop.
- Space Management: Short radius elbows allow installation in tight piping layouts.
- High Pressure Capability: With proper schedule selection, they handle high-pressure systems safely.
- Durability: Wrought steel ensures consistent mechanical properties and high corrosion resistance when stainless or alloy steel is used.
- Versatility: Suitable for oil & gas, petrochemical, power, and water industries.