At Solitaire Fittings, we are one of the leading manufacturers, stockists, and suppliers of ASTM A234 WPB Carbon Steel Buttweld Fittings. With years of expertise in the piping industry, we provide high-quality buttweld fittings that are widely used in power plants, oil refineries, petrochemical plants, pipelines, and industrial processing systems. Our products are manufactured in strict compliance with ASTM A234 and ASME SA234 standards, ensuring long-lasting performance, dimensional accuracy, and corrosion resistance.
Whether you are looking for an ASME SA 234 Gr WPB Pipe Elbow, ANSI B16.28 ASTM A234 WPB Reducer, or a Carbon Steel A234 WPB Smls Reducer, we have a wide range of fittings available in different sizes, dimensions, and wall thicknesses.
What is ASTM A234 WPB Carbon Steel Buttweld Fittings?
ASTM A234 is the standard specification for piping fittings of wrought carbon steel and alloy steel for moderate and high-temperature services. The grade WPB is the most commonly used carbon steel material under this specification.
- W = Wrought (meaning it is not cast, but formed or fabricated).
- P = Piping applications.
- B = Grade B, the most widely used grade.
These Alloy Steel WP91 Butt weld Pipe Fittings are designed for applications that require durability and long service life under extreme conditions.
Features & Advantages of Alloy Steel ASTM A234 WP91 Buttweld Fittings
- High-Temperature Resistance – With chromium and molybdenum, WP91 fittings perform exceptionally well at elevated temperatures.
- Corrosion Resistance – Protects against oxidation, scaling, and corrosive environments.
- Mechanical Strength – Excellent tensile strength and yield strength make them ideal for power plants and refineries.
- Leak-Proof Connections – Buttweld joints provide a permanent, strong, and seamless connection.
- Dimensional Accuracy – Manufactured as per ANSI, ASME, and MSS standards for perfect fitting.
- Versatility – Available in different shapes like elbows, reducers, tees, stub ends, and collars.
Types of ASTM A234 WP91 Alloy Buttweld Fittings
As a reputed Alloy Steel A234 WP91 Pipe Fittings Manufacturer, we provide a wide range of fittings to meet diverse industrial requirements.
➤ Alloy Steel WP91 Elbows
- Used to change the direction of flow in a pipeline.
- Available in 45°, 90°, and 180° angles.
- Solitaire Fittings is a leading Alloy Steel WP91 Elbow Dealer in India and abroad.
➤ ANSI B16.9 Alloy Steel A234 WP91 Reducer
- Used to connect pipes of different diameters.
- Available as Concentric and Eccentric Reducers.
- Helps maintain a smooth flow of fluids.
➤ Alloy Steel WP91 Tees
- Divides or combines fluid flow in a pipeline.
- Available as Equal Tee and Reducing Tee.
➤ ASME SA234 Grade WP91 Collar
- Provides support and sealing in pipelines.
- Commonly used in flanged connections.
➤ ASME SA A234 WP22 Alloy Steel Long Stub End
- Used with lap joint flanges for easy disassembly of pipes.
- Durable and resistant to mechanical stress.
➤ Cross Fittings
- Used where four pipes meet at a single point.
- Ensures proper distribution of fluids.
➤ Caps & End Caps
- Close the pipe ends securely to prevent leakage.
Material Composition of Chromium Molybdenum A234 WP91 Pipe Fittings
The composition of ASTM A234 WP91 Cr-Mo Pipe Fittings includes chromium and molybdenum as the main strengthening elements.
- Chromium (Cr) – Improves corrosion and oxidation resistance.
- Molybdenum (Mo) – Enhances tensile strength and creep resistance at high temperatures.
- Carbon (C) – Provides hardness and wear resistance.
This combination makes WP91 fittings ideal for critical applications like boilers, heat exchangers, and turbines.
Specifications Chart for ASTM A234 WP91 Pipe Fittings
| Standard / Specification | Description |
|---|---|
| Specification | ASTM A234 / ASME SA234 |
| Grade | WP91 (Cr-Mo Alloy Steel) |
| Type | Seamless / Welded / Fabricated |
| Size Range | ½” to 48” (DN15 to DN1200) |
| Dimensions | ANSI/ASME B16.9, B16.28, MSS-SP-75 |
| End Connection | Butt weld |
| Forms Available | Elbow, Reducer, Tee, Stub End, Cap, Cross, Collar |
| Manufacturing Process | Forged, Heat-Treated, Machined |
| Applications | High-Temperature & Pressure Piping, Refineries, Boilers, Power Plants |
Mechanical Properties of ASTM A234 WP91 Alloy Buttweld
| Property | Value (Typical) | Unit |
|---|---|---|
| Tensile Strength (min) | 585 MPa (85 ksi) | MPa / ksi |
| Yield Strength (min) | 415 MPa (60 ksi) | MPa / ksi |
| Elongation (min) | 20% | – |
| Hardness (HBW) | ≤ 250 | Brinell (HB) |
| Impact Strength | Good at elevated temp | J (Varies) |
Chemical Composition of ASTM A234 WP91 Alloy Buttweld Fittings
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 – 0.12 |
| Manganese (Mn) | 0.30 – 0.60 |
| Phosphorus (P) | ≤ 0.020 |
| Sulfur (S) | ≤ 0.010 |
| Silicon (Si) | 0.20 – 0.50 |
| Chromium (Cr) | 8.00 – 9.50 |
| Molybdenum (Mo) | 0.85 – 1.05 |
| Vanadium (V) | 0.18 – 0.25 |
| Nickel (Ni) | ≤ 0.40 |
| Nitrogen (N) | 0.03 – 0.07 |
| Aluminum (Al) | ≤ 0.02 |
Applications of ASTM A234 WP91 Alloy Steel Buttweld Fittings
Our Chrome Moly Alloy Steel WP91 Seamless Pipe Fittings Traders in India supply to a wide range of industries, including:
- Oil & Gas Industry – For pipelines carrying crude oil, gas, and petroleum products.
- Petrochemical Industry – In refineries and chemical processing plants.
- Power Generation – In thermal power plants, boilers, and superheater tubes.
- Shipbuilding – For high-strength and corrosion-resistant piping systems.
- Nuclear Plants – For high-pressure, high-temperature environments.
- Pharmaceuticals & Food Processing – In hygienic and high-purity systems.
Why Choose Solitaire Fittings for ASTM A234 WP91 Pipe Fittings?
- Global Supplier of A234 Alloy Steel WP91 Butt weld Pipe Fittings with a strong export network.
- Manufacturer of ASTM A234 WP91 Alloy Buttweld Fittings in India with advanced manufacturing facilities.
- Strict Quality Control – Every fitting undergoes testing for durability, hardness, hydro pressure, and dimensional accuracy.
- Custom Solutions – We manufacture fittings as per client requirements and international specifications.
- Competitive Pricing – Offering premium quality at cost-effective rates.
- On-Time Delivery – Fast and reliable shipping across the globe.
Solitaire Fittings – Your Trusted Partner in Alloy Steel WP91 Fittings
At Solitaire Fittings, we are not just a Chrome Moly Alloy Steel WP91 Seamless Pipe Fittings Traders in India but also a trusted exporter worldwide. We supply to countries in the Middle East, Europe, Africa, and Asia.
If you are looking for ANSI B16.9 AS WP91 Buttweld Fittings, Alloy Steel WP91 Elbow Dealer, or ASTM A234 WP91 Cr-Mo Pipe Fittings, contact us today for a free quote.
Request Your Alloy Steel ASTM A234 WP91 Buttweld Fittings Quote Today!
