Manufacturer of 1.5D Elbow Fittings | ASME/ANSI B16.9, ANSI B16.28, MSS-SP-43
A 1D elbow refers to a pipe fitting that changes the direction of flow by 90 degrees with a bend radius equal to the diameter of the pipe (1D). This type of elbow is commonly used in applications where space constraints require compact fittings, making it ideal for tight installations. The 1D Bend ensures a sharp turn in the pipeline while maintaining efficient flow, though it may introduce higher pressure drops compared to long-radius elbows. These elbows are typically used in systems with lower pressure requirements or where space-saving is a priority, such as in HVAC, plumbing, and certain industrial piping systems.
A 1.5D bend is a pipe fitting that changes the direction of flow by 90 degrees, with a bend radius 1.5 times the pipe's diameter. This type of elbow provides a smoother transition compared to a 1D elbow, reducing flow resistance and pressure drop while maintaining compactness. The 1.5D elbow is commonly used in applications where space is limited, but the system requires a more gradual turn to improve flow efficiency. It strikes a balance between space-saving and performance, making it ideal for use in plumbing, HVAC, chemical, and industrial piping systems where moderate flow control is needed.
Ample Alloys is an ISO 9001:2015, ISO 14001:2015, OHSAS 18000:2007, and PED certified manufacturer and stockist of 1D Elbows. We provide an exceptional customer experience backed by a diverse product portfolio and a dedicated, customer-focused team. Our products are designed for long-term feasibility and advantage. As a leading exporter and supplier, we offer a wide range of ANSI B16.9 1.5D Bends in materials including Stainless Steel, Carbon Steel, Alloy Steel, Duplex Steel, Super Duplex Steel, Nickel Alloy 200, Monel, Copper Nickel, Hastelloy, Alloy 20, and more.
High-Grade 1D Elbows, Stainless Steel, Carbon Steel, and Alloy Steel 1.5D Pipe Fittings, Schedule 10 1D Elbow, A403 Stainless 1.5D Buttweld Elbow, ANSI B16.9 1D Fittings, Premium Quality 1.5D Elbows for Piping Systems.
Butt weld 1.5D Pipe Bend Specifications
Size Range
1/8” NB TO 48” NB. (Seamless & 100% X-Ray Welded, Fabricated)
Wall Thickness
Sch 5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, XS, 100, 120, 140, 160, Sch XXS
Stainless Steel
ASTM A403 WP 304, 304L, 304H, 316, 316L, 316H, 317, 317L, 321, 321H, 310, 310S, 347, 904L, etc.
Standards / Dimension
ASME B16.9, ASME B16.28, MSS SP-43, MSS SP-75, ASTM A234, ASTM A403, DIN 2605, 2615, 2616, 2617, 10253.
Type / Form
Seamless, Welded, Fabricated / 1D, 1.5D Elbow, Bend.
Alloy Steel
ASTM A234, WP1, WP5, WP9, WP11, WP22, WP91, etc.
Bending Radius
R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Carbon Steel
ASTM A234, A420, MSS-SP-75, WPB, WPL3, WPL6, WPHY 42, WPHY 46, WPHY 52, WPHY 56, WPHY 60, WPHY 65, WPHY 70
Duplex & Super Duplex
ASTM A815 / A815M, UNS S31803 / 2205, UNS S32205, UNS S32101 / LDX 2101, UNS S32750 / 2507, UNS S32760, UNS S32550 / Ferralium 255.
1D Elbow Dimensions
| NPS (Inches) | Bend Radius (R) | Centerline Radius (R) | Elbow Length (L) |
|---|---|---|---|
| 1/2" | 0.5" | 0.5" | 1.57" |
| 3/4" | 0.75" | 0.75" | 2.36" |
| 1" | 1" | 1" | 3.14" |
| 1-1/4" | 1.25" | 1.25" | 3.93" |
| 1-1/2" | 1.5" | 1.5" | 4.71" |
| 2" | 2" | 2" | 6.28" |
| 2-1/2" | 2.5" | 2.5" | 7.85" |
| 3" | 3" | 3" | 9.42" |
| 4" | 4" | 4" | 12.57" |
| 6" | 6" | 6" | 18.85" |
| 8" | 8" | 8" | 25.13" |
| 10" | 10" | 10" | 31.42" |
| 12" | 12" | 12" | 37.70" |
| 14" | 14" | 14" | 43.98" |
| 16" | 16" | 16" | 50.27" |
| 18" | 18" | 18" | 56.55" |
| 20" | 20" | 20" | 62.83" |
| 24" | 24" | 24" | 75.40" |
1.5D Elbow Dimensions
| NPS (Inches) | Bend Radius (R) | Centerline Radius (R) | Elbow Length (L) |
|---|---|---|---|
| 1/2" | 0.75" | 0.75" | 2.36" |
| 3/4" | 1.125" | 1.125" | 3.54" |
| 1" | 1.5" | 1.5" | 4.71" |
| 1-1/4" | 1.875" | 1.875" | 5.98" |
| 1-1/2" | 2.25" | 2.25" | 7.07" |
| 2" | 3" | 3" | 9.42" |
| 2-1/2" | 3.75" | 3.75" | 11.78" |
| 3" | 4.5" | 4.5" | 14.13" |
| 4" | 6" | 6" | 18.85" |
| 6" | 9" | 9" | 28.27" |
| 8" | 12" | 12" | 37.70" |
| 10" | 15" | 15" | 47.12" |
| 12" | 18" | 18" | 56.55" |
| 14" | 21" | 21" | 65.98" |
| 16" | 24" | 24" | 75.40" |
| 18" | 27" | 27" | 84.83" |
| 20" | 30" | 30" | 94.25" |
| 24" | 36" | 36" | 112.77" |
Common Buttweld 1D Elbow Standards
A comprehensive list of 1.5D Bend pipe fittings standards commonly used across industries like Oil & Gas, Petrochemical, Chemical, Power, and Water Treatment. These standards specify requirements for dimensions, materials, testing, and quality assurance.
- ASME Standards:
- ASME B16.9: Factory-Made Wrought Buttwelding Fittings.
- ASME B16.25: Buttwelding Ends (preparation of ends for welding).
- ASME Standards: Wrought Steel Buttwelding Short Radius Elbows and Returns.
- ASTM Standards:
- ASTM A234: Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High-Temperature Service.
- ASTM A403: Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings.
- ASTM A815: Standard Specification for Wrought Ferritic, Ferritic/Austenitic (Duplex), and Martensitic Stainless Steel Piping Fittings.
- ASTM A860: Standard Specification for High-Strength Low-Alloy Welded Fittings (commonly used in pipelines with high strength requirements).
- API Standards:
- API 5L: Specification for Line Pipe (not directly for fittings but related to pipe material in oil and gas industries).
- API 6A: Specification for Wellhead and Christmas Tree Equipment (covers piping components but specific to high-pressure environments in oil fields).
- MSS (Manufacturers Standardization Society) Standards:
- MSS SP-43: Wrought and Fabricated Butt-Welding Fittings for Low-Pressure, Corrosion Resistant Applications (commonly used for stainless steel in low-pressure applications).
- MSS SP-75: Specification for High-Strength Wrought, Butt-Welding Fittings (used in oil and gas for high-strength requirements).
- MSS SP-79: Socket-Welding Reducer Inserts.
- MSS SP-83: Carbon Steel Pipe Unions, Socket Welding, and Threaded.
- DIN (Deutsches Institut für Normung) Standards (European):
- DIN 2605: Steel Elbows for Butt Welding (elbows dimensions and tolerances).
- DIN 2615: Tees for Butt Welding.
- DIN 2616: Reducers for Butt Welding.
- DIN 2617: Caps for Butt Welding.
- EN (European Norms) Standards:
- EN 10253-1: Butt-Welding Pipe Fittings Made of Non-Alloy and Alloy Steels.
- EN 10253-2: Butt-Welding Pipe Fittings with Specified Elevated Temperature Properties.
- EN 10253-3: Butt-Welding Pipe Fittings Made of Austenitic and Austenitic-Ferritic (Duplex) Stainless Steel.
- EN 10253-4: Butt-Welding Pipe Fittings for Low-Pressure Applications.
- JIS (Japanese Industrial Standards):
- JIS B2311: Steel Pipe Fittings for Butt-Welding.
- JIS B2312: Cast Iron Pipe Fittings for Butt-Welding.
- JIS B2313: Malleable Iron Pipe Fittings for Butt-Welding.
- ISO (International Standards Organization) Standards:
- ISO 5251: Specifications for Butt-Welding Ends for Steel Pipe Fittings (compatible with ISO pipes and equipment globally).
- ISO 15590: Petroleum and Natural Gas Industries — Induction Bends, Fittings, and Flanges for Pipeline Transportation Systems.
- BS (British Standards):
- BS 1640: Steel Butt-Welding Pipe Fittings for the Petroleum Industry.
- BS 3799: Forged Fittings, Screwed, and Socket-Welding for the Petroleum Industry
Why Ample Alloys for 1D & 1.5D Bends!
Ample Alloys is known for offering high-quality materials suitable for various applications, and its offerings for 1D and 1.5D bends are no exception. The quality of materials and the durability of the bends ensure that they have a longer lifespan, which ultimately reduces maintenance costs over time.
Quality Control System
Ensuring excellence through a rigorous Quality Control System that meets the highest industry standards.
100% Satisfaction Guarantee
Experience peace of mind with our 100% Satisfaction Guarantee, ensuring top-quality products and services that exceed your expectations.
Highly Professional Staff
Backed by a team of highly professional staff, we deliver exceptional service and expertise to meet your industry needs.
Accurate Testing Processes
Utilizing precise and accurate testing processes to ensure the highest quality and compliance with industry standards.
Generally, 1D bends tend to be more cost-effective due to the tighter curvature. However, 1.5D bends may cost slightly more due to the larger radius and smoother flow characteristics, but they often provide better performance and durability in the long run.
1.5D bends are preferred when smoother flow and lower pressure drops are essential. They reduce the risk of damage to the pipe or fluid flow issues by offering a more gradual curve, making them ideal for high-pressure systems or where longer service life is required.
- 1D bends are sharper and have a tighter curve, making them ideal for applications where space constraints require compact bends.
- 1.5D bends have a gentler curve, which helps reduce flow restrictions, pressure loss, and turbulence, leading to more efficient fluid or gas movement.
