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Carbon Steel A234 WPB pipe and fittings are widely used in industries where high-pressure and high-temperature performance is essential. Manufactured from high-quality carbon steel, these pipes and fittings are designed to withstand extreme conditions while providing excellent durability and reliability. A234 WPB is a standard specification established by ASTM, ensuring consistent quality and mechanical properties suitable for industrial piping systems.
A234 WPB pipes and fittings are made from forged carbon steel, offering superior strength and resistance to corrosion compared to ordinary carbon steel. The material is capable of handling high-stress environments, including steam, water, and oil transport applications. The fittings are available in various shapes such as elbows, tees, reducers, and caps, allowing for flexible system design and easy installation.
A234 WPB Pipe Fittings are available in various types such as elbows (45°, 90°, and 180°), tees, reducers, caps, crosses, and stub ends. Depending on the application, fittings are provided in seamless, welded, or fabricated forms. They are designed to provide secure and leak-proof connections in pressure piping systems and are suitable for use with both seamless and welded carbon steel pipes.
While carbon steel fittings are not inherently corrosion-resistant, A234 WPB fittings can be supplied with protective coatings like black paint, anti-rust oil, or galvanization to enhance corrosion resistance. In addition, these fittings can be lined with corrosion-resistant materials or used with compatible coatings when installed in corrosive environments such as chemical processing plants or offshore installations.

Carbon Steel A234 WPB products exhibit excellent mechanical properties, including high tensile strength, yield strength, and impact resistance. They are suitable for both high and low-temperature operations and maintain structural integrity under heavy loads. The robust performance of WPB fittings ensures safe and long-lasting operation in pipelines subjected to high pressure and thermal variations.
These pipes and fittings are commonly used in power plants, petrochemical industries, oil and gas pipelines, refineries, and water treatment systems. Their versatility makes them ideal for welding, bending, and machining, enabling customized solutions for complex piping networks. Carbon Steel A234 WPB products are also widely preferred for industrial projects that require compliance with international quality standards.
ASTM A234 WPB Pipe Fittings are used in industries such as oil & gas, petrochemical, power generation, shipbuilding, and water treatment. They are suitable for conveying fluids like oil, gas, steam, and water at elevated temperatures and pressures. These fittings are also widely used in boiler systems, process piping, and heat exchangers due to their mechanical strength and thermal stability.
Each Carbon Steel A234 WPB fitting undergoes rigorous testing to ensure superior quality and compliance with standards. Tests include visual inspection, hydrostatic testing, ultrasonic testing, hardness testing, and chemical analysis. Non-destructive examination (NDE) techniques are also used to detect internal flaws. Mill Test Certificates (MTCs) conforming to EN 10204 3.1 or 3.2 are provided for traceability and assurance of material quality.
Specification Table
Material | Carbon Steel ASTM A234 WPB |
Standard | ASTM A234 / ASME SA234 |
Grade | WPB |
Type | Seamless / Welded / Fabricated Butt Weld Pipe Fittings |
Manufacturing Process | Forged, Heat-Treated, and Machined |
Form | Elbow, Tee, Reducer, Cap, Stub End, Cross, Bend, etc. |
Size Range | 1/2” NB to 48” NB (Seamless up to 24” NB, Welded up to 48” NB) |
Wall Thickness | Sch 10S, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS |
Dimensions | ASME B16.9, ASME B16.28, MSS-SP-75 |
End Connections | Beveled Ends (BE), Plain Ends (PE), Flanged Ends (on request) |
Heat Treatment | Normalizing or Stress Relieving as per Specification |
Testing | Hardness Test, Hydrostatic Test, NDT, Visual & Dimensional Inspection |
Certificates | EN 10204 / 3.1 or 3.2 Certified Mill Test Certificates |
Application Industries | Oil & Gas, Power Generation, Petrochemical, Chemical, Refinery, Shipbuilding, and Construction |
Equivalent Standards | ASME SA234 WPB, MSS SP-75 WPHY Grades, BS 1640, DIN 2605, EN 10253-2 |
Chemical Composition (Typical ranges for SSS32760)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
Element | Percentage (%) |
---|---|
Carbon (C) | 0.30 max |
Manganese (Mn) | 1.20 max |
Phosphorus (P) | 0.035 max |
Sulfur (S) | 0.035 max |
Silicon (Si) | 0.10–0.35 |
Mechanical Properties (Typical)
Property | Value |
---|---|
Tensile Strength | Minimum 485 MPa (70,000 psi) |
Yield Strength | Minimum 245 MPa (35,500 psi) |
Elongation | Minimum 20% |
Hardness | Maximum 197 HB (Brinell) |
Impact Resistance | Good at ambient and moderately low temperatures |
Equivalent Grades
Standard | Equivalent Grade |
---|---|
ASTM A234 WPB | ASTM A234 WPB (USA) |
EN | EN 10222-2 P235GH |
DIN | DIN 1629 / 17175 St 35.8 |
JIS | JIS G3454 STPG 38 |
IS (India) | IS 1239 / IS 3589 Grade A |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
Nominal Size (inch) | Outside Diameter (mm) | Schedule 10 Weight (kg/m) | Schedule 40 Weight (kg/m) | Schedule 80 Weight (kg/m) |
---|---|---|---|---|
1/2" | 21.3 | 1.27 | 1.68 | 2.41 |
1" | 33.4 | 2.27 | 3.38 | 4.85 |
2" | 60.3 | 4.88 | 6.54 | 10.0 |
4" | 114.3 | 9.20 | 16.8 | 24.0 |
6" | 168.3 | 14.7 | 25.6 | 38.0 |
8" | 219.1 | 21.6 | 34.0 | 52.0 |
10" | 273.0 | 31.0 | 50.0 | 75.0 |
12" | 323.9 | 39.0 | 65.0 | 95.0 |
Types Of Carbon Steel A234 WPB Pipe & Fittingss and Fittingss

SS S32760 Seamless Pipe

SS S32760 Welded Pipe

SS S32760 ERW Pipe

SS S32760S EFW Pipe

Carbon Steel A234 WPBS Seamless Fittings

S32760H Super Duplex Steel Welded Fittings

S32760 Super Duplex Steel Capillary Fittings

S32760H Super Duplex Steel Heat Exchanger Fittingss
Frequently Asked Questions (FAQ)
Q1: What is Carbon Steel A234 WPB?
A1: Carbon Steel A234 WPB is a standard specification for welded and seamless carbon steel pipe fittings used in high-pressure and high-temperature industrial applications. It ensures high strength, durability, and excellent weldability.
Q2: What types of fittings are available in A234 WPB?
A2: Common types of A234 WPB fittings include elbows, tees, reducers, caps, and couplings. They are available in various sizes, schedules, and end connections like butt welded, socket welded, and threaded.
Q3: What are the typical applications of A234 WPB fittings?
A3: These fittings are widely used in industries such as oil & gas, petrochemical, power plants, refineries, and water treatment plants where high pressure and temperature performance is required.
Q4: What are the mechanical properties of A234 WPB?
A4: A234 WPB fittings have a minimum tensile strength of 485 MPa (70,000 psi), yield strength of 245 MPa (35,500 psi), and minimum elongation of 20%. They are suitable for elevated temperatures up to 425°C (797°F).
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