ASME B16.9 Buttweld Pipe Fittings
ASME B16.9 Butt Weld Fittings – Premium Factory Direct Supply for Global Piping Infrastructure
Capacity: Scalable production lines for seamless (up to 24″) and welded (up to 72″) fittings.
Traceability: Every single fitting is hard-stamped with a Heat Number linked to 3.1 MTC.
Standards: Fully compliant with ASME B16.9, MSS SP-75, and DIN/EN standards.
Production Description
We specialize in the manufacturing and bulk export of high-integrity ASME B16.9 butt weld fittings.
We serve as a strategic partner for large-scale stockists and EPC contractors worldwide. Our production facility focuses on high-precision forming, ensuring that every elbow, tee, and reducer exceeds the structural requirements of high-pressure and corrosive environments.
ASME B16.9 Butt Weld Fittings Product Range
We manufacture the full spectrum of butt weld components required for complex piping systems:
Elbows: 45°, 90°, 180° (Long Radius & Short Radius), 3D/5D Bends.
Tees: Equal Tees, Reducing Tees, and Barred Tees for pigging operations.
Reducers: Concentric and Eccentric Reducers (Precision wall thickness transition).
Caps: Ellipsoidal pipe caps for high-pressure vessel endings.
Cross: Available Sizes: ¼” to 32”
Stub Ends:Type A, B, and C for Lap Joint Flange connections.
Technical Specifications & Materials
Manufacturing Standards
| Feature | Details |
| Standard | ASME B16.9, ASME B16.28, MSS SP-43, MSS SP-75 |
| Size (Seamless) | 1/2″ – 24″ (DN15 – DN600) |
| Size (Welded) | 24″ – 72″ (DN600 – DN1800) |
| Wall Thickness | SCH 10S, 20, STD, 40, 80, 160, XS, XXS |
| Surface Treatment | Shot Blasting, Black Phosphating, Transparent Oil, Galvanizing, Pickling |
Material Grades
Carbon Steel: ASTM A234 WPB (Standard), WPC; High-Yield WPHY 42, 52, 60, 65, 70.
Low-Temperature Steel: ASTM A420 WPL6, WPL3.
Stainless Steel: ASTM A403 WP304/304L, WP316/316L, WP321, WP347.
Alloy Steel: ASTM A234 WP5, WP9, WP11, WP22, WP91.
Duplex & Super Duplex: ASTM A815 UNS S31803, S32205, S32750.
Standard Dimension Reference
Note: Typical dimensions for SCH 40 / STD fittings.
| Nominal Pipe Size (NPS) | Outside Diameter (OD) | 90° Elbow Center-to-End (A) | Tee Center-to-End (C) | Reducer Length (H) |
| 2″ | 60.3 mm | 76 mm | 64 mm | 76 mm |
| 4″ | 114.3 mm | 152 mm | 105 mm | 102 mm |
| 8″ | 219.1 mm | 305 mm | 178 mm | 152 mm |
| 12″ | 323.8 mm | 457 mm | 254 mm | 203 mm |
| 24″ | 610.0 mm | 914 mm | 432 mm | 508 mm |
Advanced Production Processes
Our factory utilizes three primary forming methods to ensure grain structure integrity:
Hot Mandrel Forming: Used for carbon steel elbows to ensure uniform wall thickness and smooth curvature.
Cold Pressing: Specialized for stainless steel fittings to maintain corrosion resistance without altering material properties.
Automatic Submerged Arc Welding (SAW): For large-diameter fittings (24″+), ensuring 100% X-ray quality weld seams.
Strict Quality Assurance
To meet the demands of oil, gas, and power industries, RAYOUNG implements a zero-defect quality protocol:
Dimensional Inspection: Verification of outside diameter, end-to-end dimensions, and bevel angle (37.5° ± 2.5°).
Wall Thickness Mapping: Ultrasonic thickness gauges used at multiple points (back, side, and throat of elbows).
Non-Destructive Testing (NDT):
RT (Radiographic Testing): 100% on weld seams of fabricated fittings.
PT/MT: For surface defect detection on alloy and stainless grades.
PMI (Positive Material Identification): Every stainless and alloy fitting is tested before dispatch to verify chemical composition.
Technical FAQ
Q: Can you provide fittings with custom wall thicknesses not listed in ASME B16.9?
A: Yes. We can manufacture fittings to match specific “true” wall thicknesses or custom schedules for high-pressure project requirements.
Q: Do you support third-party inspections (TPI)?
A: Absolutely.
Q: What is the typical lead time for a 20ft container of mixed fittings?
A: For standard WPB carbon steel, lead times are generally 25-30 days. Stainless and alloy grades depend on raw material availability, usually 35-45 days. Please consult our sales team regarding the specific delivery schedule.
Cooperate with Rayoung, you will enjoy the following benefits.
Rayoung–A leading Butt Weld pipe fittings, flanges and steel pipes supplier& factory in China.
We’re here to help with your industry pipe fittings and flange needs. Rayoung has been in the business of industrial pipe fittings since 1983, and we’re confident we can help you find a solution more quickly, affordably, and with greater expertise than the competition.
We’d love to learn more about your project today!
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