Trusted Manufacturers of Seamless Pipe Bend - ASME/ANSI B16.9, ANSI B16.28, MSS-SP-43
A seamless pipe bend is a curved pipe fitting made without any weld seams, offering enhanced strength and durability. It is formed from a single piece of pipe material, ensuring a smooth, uninterrupted flow and minimizing the risk of leaks or weak points. Seamless bends are ideal for applications requiring high pressure and temperature resistance, such as in industries like oil and gas, petrochemical, and power generation. Their seamless design provides excellent structural integrity, making them a preferred choice for critical piping systems.
Ample Alloys is a leading manufacturer and supplier specializing in high-quality piping solutions, including seamless pipe bends, and other critical components for industrial applications. With years of experience in the industry, weae committed to delivering durable and reliable products that meet international standards. Our offerings cater to a wide range of sectors. We pride ourselves on our state-of-the-art manufacturing processes, which ensure precision, quality, and the highest levels of performance. Our dedicated team works closely with clients to provide tailored solutions that meet their specific needs.
High-Quality Seamless Pipe Bend Fittings, Custom Seamless Pipe Bends, Stainless Steel, Carbon Steel and Alloy Steel Seamless Pipe Bend, Pressure Resistant Seamless Pipe Bend, Durable Seamless Pipe Bend Fittings, Seamless 90 Degree Pipe Bend
ASME B16.9 Seamless 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
Pipe Bends.
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.
Seamless Pipe Bend Dimensions
| Nominal Pipe Size (NPS) | Pipe Schedule (Wall Thickness) | Bend Radius | Bend Angle | Outside Diameter |
|---|---|---|---|---|
| 1/2" | Sch 40, Sch 80 | 1.5D - 5D | 90° | 0.84" - 1.05" |
| 1" | Sch 40, Sch 80 | 2D - 6D | 90° | 1.32" - 1.66" |
| 2" | Sch 40, Sch 80 | 3D - 8D | 90° | 2.38" - 2.87" |
| 3" | Sch 40, Sch 80 | 4D - 10D | 90° | 3.50" - 4.00" |
| 4" | Sch 40, Sch 80 | 5D - 12D | 90° | 4.50" - 5.00" |
| 6" | Sch 40, Sch 80 | 6D - 15D | 90° | 6.00" - 7.00" |
| 8" | Sch 40, Sch 80 | 7D - 16D | 90° | 8.00" - 9.00" |
| 10" | Sch 40, Sch 80 | 8D - 18D | 90° | 10.00" - 11.00" |
| 12" | Sch 40, Sch 80 | 9D - 20D | 90° | 12.00" - 13.00" |
ASME B16.9 Seamless Bends Tolerance
| Nominal Pipe Size | Tolerance on Centerline Radius | Tolerance on Bend Angle | Tolerance on Length of Bend |
|---|---|---|---|
| 1/2" | ±1/8" | ±1° | ±1/2" |
| 1" | ±1/8" | ±1° | ±1/2" |
| 2" | ±1/4" | ±1° | ±1/2" |
| 3" | ±1/4" | ±1° | ±1/2" |
| 4" | ±1/4" | ±1° | ±1/2" |
| 6" | ±1/2" | ±1° | ±1/2" |
| 8" | ±1/2" | ±1° | ±1/2" |
| 10" | ±1/2" | ±1° | ±1/2" |
| 12" | ±1/2" | ±1° | ±1/2" |
Standard Specifications for Seamless Bend
The Standard Specifications for Seamless Bends are detailed in industry standards such as ASME B16.9 and ASME B16.49, which outline the material, design, dimensions, tolerances, and testing requirements for seamless pipe bends used in various piping systems.
- 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 Seamless Pipe Bend!
Ample Alloys for seamless pipe bends that combine durability, performance, and expert craftsmanship to meet the demands of various industries, including oil and gas, petrochemical, power generation, and more.
Customer Satisfaction Focus
Our dedicated team is committed to providing technical assistance, exceptional service, and end-to-end support for all your seamless pipe bend requirements.
Competitive Pricing
Ample Alloys combines superior quality with cost-effective solutions, making us a trusted partner for seamless pipe bends at great value.
Timely Deliveries
Our streamlined processes and efficient supply chain guarantee the on-time delivery of seamless pipe bends, keeping your operations on schedule.
Comprehensive Customization
We offer seamless pipe bends in various sizes, materials, and bending radii to meet the specific demands of your project.
Seamless pipe bends are used in various industries, including oil & gas, petrochemical, power generation, water treatment, chemical processing, and HVAC. They are essential for redirecting the flow of fluids and gases in pipelines while maintaining structural integrity.
Seamless pipe bends are available in a wide range of sizes, from small diameters like 1/2" to large diameters of 48" or more. The bend radii are typically expressed in multiples of the pipe's diameter, such as 1.5D, 2D, 3D, etc., where D is the nominal diameter of the pipe.
The primary difference lies in the manufacturing process. Seamless pipe bends are made from a single piece of pipe, which eliminates the potential weaknesses that can arise from welding. This makes seamless pipe bends stronger, more durable, and less prone to failure under pressure compared to welded bends.
