ASTM A234 Gr WP91 Alloy Steel Pipe Fittings

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ASTM A234 Gr WP91 Alloy Steel Pipe Fittings Specification

Yield Strength
415 MPa (minimum)

Bend Radius
1D, 1.5D, 2D, 3D and custom

Diameter
21.3 mm 1219 mm

Connection Type
Butt Weld

Flexibility
Rigid

Temperature Range
-10C to 650C

Tolerance
0.5 mm

Coating Type
Epoxy, Galvanizing, Black Paint

Tensile Strength
660 MPa (minimum)

Sealing Type
Metal to Metal

Product Type
Alloy Steel Pipe Fittings

Material
Alloy Steel

Connection
Welded

Shape
Elbow, Tee, Reducer, Cap, Cross

Standard
ASTM A234

Surface Treatment
Black Painting, Anti-rust Oil, Galvanized

Outer Diameter
1/2 inch 48 inch (21.3 mm 1219 mm)

Section Shape
Round

Length
As per ASME/ANSI B16.9 / B16.28 standard

Thickness
Sch 20 Sch XXS (2 mm 40 mm)

Color
Black

Usage
High temperature and pressure pipelines

Rated Pressure
Class 150 Class 2500

Application
Oil & Gas, Power Industry, Petrochemical, Refineries, Chemical Plants

Material Grade
ASTM A234 Gr WP91

About ASTM A234 Gr WP91 Alloy Steel Pipe Fittings

What Are Specification ASTM A234 Gr WP91 Alloy Steel Pipe Fittings?

Specification :	ASTM A234 / ASME SA234
Dimensions :	ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
WALL THICKNESS :	5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS, Custom Thickness.
Size :	1/8 NB TO 48 NB.
Type :	Seamless / Welded / Fabricated

Chemical Composition Of ASTM A234 Gr WP91 Alloy Steel Pipe Fittings?

Grade	C	Mn	Si	S	P	Cr	Mo
A234 WP22	0.28 max	0.30- 0.90	0.10- 0.50	0.045 max	0.045 max	-	0.044-0.65 max

Mechanical Properties Of ASTM A234 Gr WP91 Alloy Steel Pipe Fittings?

Grade	Tensile Strength (Mpa)	Yield Strength (Mpa)	Elongation %
A234 WP22	220 min	415 min	20

Superior Manufacturing and Quality Standards

Our ASTM A234 Gr WP91 pipe fittings are produced using state-of-the-art seamless and welded manufacturing processes, adhering to strict tolerance (0.5 mm) and the highest industry standards. Each fitting undergoes comprehensive testingincluding hydrostatic, ultrasonic, radiographic, hardness, and impact (Charpy V-Notch) assessmentsto guarantee mechanical strength and operational integrity in severe environments.

Exceptional Corrosion and Pressure Resistance

Designed for sustained durability, these alloy steel fittings exhibit high corrosion resistance with optional epoxy, galvanizing, or black paint coatings. Suitable for ANSI/ASME pressure classes up to 2500 and operating temperatures from -10C to 650C, they deliver reliable sealing and mechanical stability in critical piping systems.

Versatile Applications and Custom Solutions

Available in sizes from 1/2 inch to 48 inch and multiple shapes, our WP91 fittings serve diverse industries, including oil & gas, power plants, petrochemical, and chemical processing. Ready stock and custom fabrication options offer flexible solutions for intricate pipeline designs, with clear marking, robust packaging, and compliance with ASTM and international standards.

FAQs of ASTM A234 Gr WP91 Alloy Steel Pipe Fittings:

Q: How are ASTM A234 Gr WP91 alloy steel pipe fittings manufactured for enhanced durability?

A: These fittings are crafted using both seamless and welded processes, with each component undergoing heat treatment through normalization and tempering. This process ensures uniform strength, improved toughness, and reliable performance in high-temperature and high-pressure applications.

Q: What are the typical applications for these WP91 alloy steel fittings?

A: They are commonly used in high-temperature and pressure pipelines such as those found in oil & gas facilities, power plants, petrochemical complexes, refineries, and chemical processing industries, where durability and resistance to corrosion are paramount.

Q: When should you choose WP91 pipe fittings over other grades?

A: Choose WP91 fittings when your system operates under elevated temperatures (up to 650C) and high pressure (up to Class 2500), and requires robust mechanical properties, superior corrosion resistance, and consistent weldability.

Q: Where are these alloy steel fittings typically exported and used?

A: Our WP91 alloy steel fittings are supplied both domestically and internationally, serving major industries across India and other regions, especially where compliance with rigorous standards like ABS, BV, Lloyds, and SGS is essential.

Q: What tests and quality control measures are performed during the manufacturing process?

A: Each fitting is subject to hydrostatic testing, ultrasonic and radiographic inspections, hardness measurement (max 250 HB), and impact testing (Charpy V-Notch), in line with ASTM requirements. These rigorous checks ensure the fittings meet specified safety and durability standards.

Q: How can these fittings benefit your critical piping projects?

A: Benefits include high tensile (660 MPa min.) and yield strength (415 MPa min.), excellent weldability, tight tolerances, custom fabrication possibilities, and ready stock availability, ensuring timely project completion and dependable long-term performance.

Q: What packing and marking options are available for these fittings?

A: Fittings are packed securely in wooden cases, pallets, or bundles to ensure protection during transit. Each item is clearly marked with size, grade, manufacturer, and standard details for full traceability and compliance.

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