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Alloy Steel A234 Wp91 Fittings MANUFACTURER
Alloy Steel A234 Gr. WP91 Buttweld Pipe Fittings Stockist, Cr-MO A234 WP91 Welded Fittings Manufacturers in Mumbai, ASTM A234 WP91 Alloy Steel Butt weld Pipe Fittings, Alloy Steel A234 WP91 Seamless Pipe Fittings Exporter, Alloy Steel WP91 Pipe Fittings, ASTM A234 Alloy Steel WP91 Elbow Supplier in India.
Alloy Steel ASTM A234 WP91 Pipe Fittings Content
- ASTM A234 WP91 Pipe Fittings Specifications
- Top Features of Alloy Steel WP91 Pipe Fittings
- Manufacturing Process of WP91 Pipe Fittings
- ASTM A234 WP91 Pipe Fittings Dimensions Chart
- ASTM A234 Alloy Steel WP91 Pipe Fittings Weight Chart
- Why is Alloy Steel A234 WP91 Preferred for Creep-Resistant Applications?
- Types of Alloy Steel A234 WP91 Fittings
- Distributors, Stockist & Suppliers of World's Top 10 Manufacturers of Alloy Steel A234 WP91 Fittings
- Approved Manufacturer Makes of Alloy Steel A234 WP91 Fittings
- Alloy Steel A234 WP91 Fittings Price List
- Application of Alloy Steel A234 WP91 Fittings
- People Searched For Alloy Steel A234 WP91 Fittings
- Export Destinations For Alloy Steel A234 WP91 Fittings
- Domestic Supply For Alloy Steel A234 WP91 Fittings
- FAQs
Rajveer Stainless and Alloys manufactures and supplies ASTM A234 WP91 Alloy Steel Pipe Fittings from Mumbai, India, in custom sizes and specifications built around each client’s project requirements. This ferritic alloy carries added chromium and molybdenum, reaching a yield strength of 205 MPa and a tensile strength of 415 MPa. Chromium blocks oxidation at elevated wall temperatures. Molybdenum adds hardenability, raises the elastic limit, and cuts brittleness under sustained load. That combination makes Alloy Steel WP91 Pipe Fittings the standard choice for high-temperature service across power and process piping circuits.
Rajveer
ANSI B16.9 Alloy Steel WP91 Butt weld Pipe Fittings, Alloy Steel A234 Pipe Cap Exporter, Cr-MO A234 Grade WP91 Pipe Elbow, ASME SA 234 WP91 Alloy Steel Buttweld Equal Tee, A234 WP91 Alloy Steel WP91 A234 Stub End, Cr-MO A234 WP91 Buttweld Pipe Fittings, Alloy Steel A234 WP91 Buttweld Reducer, Cr-MO WP91 A234 Buttweld Cross, Alloy Steel A234 WP91 Butt weld Pipe Bend, ASTM A234 Alloy Steel WP91 Seamless Pipe Fittings Dealers in India.
What are ASTM A234 WP91 Alloy Steel Pipe Fittings?
Alloy Steel A234 WP91 Pipe Fittings are ferritic Cr-Mo parts designed to be used in high-pressure and high-temperature piping circuits. The 9% chromium and 1% molybdenum content is responsible for its 205 MPa yield strength and 415 MPa tensile strength, which remain stable after repeated of thermal cycles.
Chromium resists oxidation and scaling at elevated wall temperatures. Molybdenum adds hardenability and cuts brittleness under sustained load, which is why ASTM A234 WP91 Fittings outperform standard carbon steel grades in creep-prone service.
These fittings connect smoothly with alloy steel buttweld fittings already installed in a circuit, since dimensional standards remain consistent across the WP-series grades.
ASTM A234 WP91 Pipe Fittings Specifications
Every batch leaving our facility is checked against these baseline specification parameters before dispatch.
| Specifications | ASTM A234 / ASME SA234 |
|---|---|
| Size | 1/8” NB TO 48” NB. |
| Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Type | Seamless / Welded / Fabricated |
| Thickness | Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS |
Top Features of Alloy Steel WP91 Pipe Fittings
These fittings earn their place in critical service through a specific set of metallurgical traits.
- Rated for continuous wall temperatures up to 650°C without loss of structural integrity.
- Resists creep deformation under sustained pressure far longer than standard P11 or P22 grades.
- Normalizing and tempering result in a fine-grained structure, which improves the reliability of the weld.
- Resists thermal cycling associated with startup and shutdown sequences at thermal power plants.
- It has a tensile strength of 415 MPa, which is a significant margin above the carbon steel equivalents.
- Accepts fusion welding, flanging, and bending without cracking within recommended parameters.
- Surface treatments, including passivation and phosphating, extend service life in corrosive atmospheres.
The production of the billets begins with a forged billet which is normalized at 1050°C, air-cooled to approximately 200°C and tempered at 760°C, which secures the martensitic structure that gives WP91 its creep resistance.
The fitting is shaped by forming, flanging and bending to final dimensions and where fabricated construction is specified, segments are joined by fusion welding. Surface finishing follows, using shot blasting, oil-dip, or varnish coating. This process gives Alloy Steel WP91 Buttweld Fittings a consistent wall thickness for tight-tolerance piping runs.
ASTM A234 WP91 Pipe Fittings Dimensions Chart
Center-to-end and outside diameter values below follow ASME B16.9 for a 90-degree long radius elbow across common bore sizes.
| NPS (inch) | Outside Diameter (mm) | 90° LR Elbow Center-to-End (mm) |
|---|---|---|
| 1/2 | 21.3 | 38 |
| 3/4 | 26.9 | 48 |
| 1 | 33.7 | 64 |
| 1-1/2 | 48.3 | 86 |
| 2 | 60.3 | 95 |
| 3 | 88.9 | 140 |
| 4 | 114.3 | 190 |
| 6 | 168.3 | 290 |
| 8 | 219.1 | 381 |
| 10 | 273.0 | 478 |
| 12 | 323.9 | 575 |
ASTM A234 Alloy Steel WP91 Pipe Fittings Weight Chart
Weight per piece rises sharply with bore size and wall schedule, so confirming the exact schedule before ordering avoids costly freight miscalculations.
| NPS (inch) | Approx. Weight, Sch 40 LR Elbow (kg) |
|---|---|
| 1/2 | 0.10 |
| 3/4 | 0.15 |
| 1 | 0.25 |
| 1-1/2 | 0.60 |
| 2 | 1.00 |
| 3 | 2.70 |
| 4 | 5.00 |
| 6 | 13.00 |
| 8 | 26.00 |
| 10 | 45.00 |
| 12 | 68.00 |
Why is Alloy Steel A234 WP91 Preferred for Creep-Resistant Applications?
Creep failure happens slowly, as metal deforms under constant stress at high temperature, long before it reaches its rated tensile limit. WP91’s tempered martensitic microstructure resists this gradual deformation far better than ferritic grades like P11 or P22.
At 600°C sustained service, most carbon steel fittings would already show measurable elongation within a few thousand hours. WP91 holds its shape. That stability is precisely why ASTM A234 Grade WP91 Fittings dominate superheater headers, reheat lines, and main steam piping in supercritical boiler circuits, where a single failed joint can shut down an entire generating unit.
How to Select the Right WP91 Pipe Fittings?
Matching the fitting to actual operating conditions prevents premature failure and unnecessary downtime.
- Compare the wall schedule to the design pressure of the piping class listed on the datasheet.
- Determine if the seamless or fabricated method is suitable for the stress concentration needs.
- Use dimensional standards to verify current B16.9 fittings that are already in the circuit.
- Run the mill test before installation to ensure chemical composition and mechanical properties.
Why Are We a Trusted ASTM A234 WP91 Pipe Fittings Supplier?
Rajveer Stainless and Alloys manufactures and supplies companies, with all consignments traceable from the mills and certified. Orders proceed from Mumbai to project sites in the Middle East, South East Asia and to domestic Indian refineries and power stations, along with regular documentation at various stages.
As a manufacturer and supplier of pipes and tubes, we handle custom schedules, non-standard lengths, and mixed-size orders in a single shipment. This reduces the need for clients to coordinate with multiple vendors. Our Alloy Steel WP91 Fittings Supplier desk is also responsible for the export documentation required to ship through Gulf and Southeast Asian ports. Therefore, the procurement team has only one point of contact from quotation to delivery.
Testing, Inspection & Quality Assurance
Each batch undergoes chemical composition analysis, mechanical testing for yield and tensile values and hydrostatic or ultrasonic testing depending on the application. Positive material identification confirms grade accuracy before packing. Third-party inspection agencies verify dimensions against B16.9 and B16.28 tolerances on request, and every shipment travels with mill test certificates matching EN 10204 3.1 format.
Types of Alloy Steel A234 WP91 Pipe Fittings
Fitting geometry changes with the routing, reduction, and branch requirements of a piping layout. Our WP91 Pipe Fittings range covers:
- ASTM A234 Cr-MO WP91 Pipe Fittings Exporter
- Alloy Steel A234 WP91 Stubends Dealer
- Alloy Steel A234 WP91 Pipe Elbow
- ASTM A234 WP91 90deg. LR Elbow Manufacturer
- A234 Alloy Steel WP91 Seamless Pipe Fittings
- ASTM A234 Alloy Steel WP91 3D Elbow
- Alloy Steel ASTM A234 WP91 Welded Pipe Fittings Supplier
- Alloy Steel ASTM A234 WP91 5D Elbow
- Alloy A234 WP91 Short Radius Elbow Stockist
- ASTM A234 Alloy Steel WP91 45 degree Elbow Exporter
- Alloy Steel A234 WP91 Butt weld Fittings Dealer
- Alloy Steel A234 WP91 Stub Ends
- Alloy Steel A234 WP91 Eccentric Reducer Manufacturer
- Alloy Steel A234 WP91 Reducing Cross
- ANSI B16.9 Alloy Steel WP91 Buttweld Fitting
- A234 Alloy Steel WP91 Buttweld Reducer Supplier
- Alloy Steel Gr WP91 Buttweld Tee
- Alloy Steel WP91 Butt-weld Reducing Nipple Stockist
DISTRIBUTORS, STOCKIST & SUPPLIERS OF WORLD'S TOP 10 MANUFACTURERS OF Alloy Steel A234 Wp91 Fittings
Approved Manufacturer Makes of Alloy Steel A234 Wp91 Fittings
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(Qatar)
(Saudi Arabia)
(Qatar)
(Kuwait)
(Kuwait)
(Qatar)
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(Oman)
(Abu Dhabi)
(Saudi Arabia)
(Brazil)
(Malaysia)
(Iran)
(Nigeria)
(Egypt)
Alloy Steel A234 Wp91 Fittings Price List
| Alloy Steel A234 WP91 Butt weld Pipe Elbow | FOB Price: US $0.5-6 / Piece |
| ASTM A234 Alloy Steel Grade WP91 Pipe Elbow | FOB Price: US $1.2-2500 / Piece |
| Alloy Steel WP91 Seamless Pipe Fittings | FOB Price: US $1-5000 / Piece |
| Cr-MO A234 WP91 90deg. LR Elbow | FOB Price: US $0.11-919191 / Piece |
| Type of WP91 Alloy Steel Seamless 90 Degree LR Elbow | FOB Price: US $0.2-50 / Piece |
| Alloy Steel WP91 45deg. Elbow | FOB Price: US $0.2-500 / Piece |
| ASTM A234 WP91 Alloy Steel Buttweld Fitting | FOB Price: US $1.2-2500 / Piece |
| Alloy Steel A234 WP91 Butt weld Pipe Elbow | FOB Price: US $0.11-1 / Piece |
| Alloy Steel A234 WP91 Short Radius | FOB Price: US $8-8000 / Piece |
| Alloy Steel ASTM A234 WP91 180° Elbow | FOB Price: US $500-600 / Piece |
| Alloy Steel ASTM A234 WP91 SR Elbow | FOB Price: US $0.5-500 / Piece |
| Alloy Steel ASTM A234 WP91 End Pipe Cap | FOB Price: US $1000-2000 / Ton |
Application of Alloy Steel A234 Wp91 Fittings
- Petrochemical
- Oil & Gas
- Paper
- Refineries
- Nuclear Power
- Cement
- Sugar
- Power Plant
- Fertilizers
- Breweries
- Chemical
- Petrochemical
- Shipbuilding
- Defence
- Mining
- Steel Plant
- Construction
- Oil Mills
- Paper
- Engineering Co.
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EXPORT DESTINATIONS FOR Alloy Steel A234 Wp91 Fittings
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FAQ
Yes. WP91 handles continuous wall temperatures up to 650°C, making it standard for superheater and reheat piping in thermal power stations.
WP91 contains roughly 9% chromium against WP11’s 1.25%, giving WP91 higher creep strength and better performance above 550°C sustained service.
Both construction types are available. Seamless suits high-pressure headers, while welded and fabricated options cover larger bore, lower-stress routing.
WP91 is a standard choice for supercritical and ultra-supercritical boiler circuits, particularly in main steam lines and reheat headers.
Yes. Rajveer Steel and Alloys provides non-standard lengths, mixed schedules and project-specific dimensional requirements are manufactured on demand with supporting mill documentation.
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