ASME/ANSI B16.9 Buttweld Elbows

RAYOUNG is a leading manufacturer of high-quality ASME B16.9 buttweld elbows. Our elbows are designed to change the direction of fluid flow in piping systems with minimal pressure drop.
Whether you are a distributor stocking for local markets or a contractor working on a high-pressure industrial project, our precision-engineered elbows ensure a perfect fit and long-term durability.

• Compliance: Fully compliant with ASME B16.9, ASTM A234 WPB, and MSS SP-75.
• Traceability: MTC 3.1 certified for every batch. Heat number stamped for full traceability.
• Global Export: Proven track record supplying to Oil & Gas, Power, and Chemical projects worldwide.

ASME/ANSI B16.9 Elbow Specification：

ASME B16.9 Buttweld Pipe Elbow Material Grades

Stainless Steel Elbow; ASTMA403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L
Carbon Steel Elbow: ASTM A234 WPB, WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70.
Alloy Steel Elbow: ASTM/ ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91

Click here to get the difference about stainless steel elbow and carbon steel elbows.

Difference Between Short and Long Radius Elbows

Short Radius Elbow: is small in size, usually less than 1.5 times less than the usual piping diameter
Long Radius Elbow: is very durable and corrosion-resistant. Here, the elbow curvature is around 1.5 times the nominal diameter.

More difference Between Long Radius Elbow And Short Radius Elbow, please click here.

Quality Assurance

• Raw Material Inspection: We use premium steel billets from Tier-1 mills.
• Dimensional Control: Strict tolerance monitoring according to ASME B16.9 (Diameter, Wall Thickness, End-to-End).
• Non-Destructive Testing (NDT): Ultrasonic Testing (UT), Magnetic Particle Inspection (MPI), and X-Ray (for welded elbows) available upon request.
• Third-Party Inspection: We welcome Third-Party inspections before shipment.

Applications

• Oil & Gas Pipelines
• Petrochemical Plants
• Water Supply Systems
• Power Generation Facilities
• General Engineering and Construction

ANSI / ASME B16.9 Buttweld Pipe Fitting

ANSI/ASME B16.9 buttweld pipe Fittings (commonly referred to as “B16.9 Fittings”) denote butt-welded pipe fittings conforming to the ASME B16.9 standard. Beyond elbows, they encompass tees, reducers, pipe caps, and other components, though elbows represent the most widely used type.

“Butt weld” is the core connection method for these fittings. Both ends of the fitting are designed with the same wall thickness as the pipeline. Through welding, they fuse completely with the pipeline to form a continuous sealed structure.

This offers the advantages of high strength and high sealing integrity, enabling them to withstand harsh operating conditions such as high pressure, high temperature, and vibration.

For ASME B16.9 elbow, they not only meet the dimensional and quality requirements of the B16.9 standard but also ensure the overall sealing integrity of the piping system through buttweld connections, effectively preventing medium leakage. This makes them indispensable in fields with extremely high demands for sealing and safety, such as petrochemicals, nuclear power, and aerospace. Furthermore, butt-welded connections offer greater strength than threaded or socket welded joints, reducing stress concentration at pipe-fitting interfaces and extending the service life of piping systems.

FAQ:

Q: Can you provide MTC according to EN 10204 3.1?

A: Yes, every shipment comes with a Mill Test Certificate (MTC) detailing the chemical composition and mechanical properties.

Q: Do you offer custom radius elbows like 3D or 5D?

A: Absolutely. We can manufacture custom bends and elbows to meet specific project requirements beyond standard B16.9 dimensions.

Q: How do you ensure the bevel end quality for welding?

A: All our buttweld elbows are precision-beveled according to ASME B16.25 to ensure smooth on-site welding.