ASTM A403 WP304 Pipe Fittings

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Stainless Steel Pipe Fittings Supplier & Exporter

ASTM A403 WP304 Pipe Fittings Manufacturer & Supplier in India

ASTM A403 WP304 Pipe Fittings are widely used stainless steel buttweld fittings known for their excellent corrosion resistance, durability, and high strength. These fittings are manufactured using austenitic stainless steel grade WP304, which is one of the most commonly used materials in industrial piping systems. Metinox Overseas is a trusted manufacturer, supplier, and exporter of high-quality SA 403 WP 304 and ASTM A403 WP304 pipe fittings in India, offering products that meet international standards and client-specific requirements.

ASTM A403 WP304 fittings are designed for use in pressure piping systems and are suitable for both moderate and high-temperature environments. These fittings are available in various forms such as elbows, tees, reducers, caps, and bends, ensuring flexibility in pipeline design. Variants like ASTM A403 WP304L are also available for applications requiring lower carbon content to enhance weldability and reduce carbide precipitation.

At Metinox Overseas, all A403 WP304 fittings are manufactured using advanced technology and undergo strict quality checks to ensure superior performance. These fittings comply with global standards such as ASME B16.9 and MSS-SP-43. Due to their excellent mechanical properties and resistance to oxidation, ASTM A403 WP304 pipe fittings are widely used in industries like oil & gas, chemical processing, power plants, and food processing.

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Types of ASTM A403 WP304 Pipe Fittings

ASTM A403 WP304 pipe fittings are available in various types to meet different piping requirements:

  • Elbows (90°, 45°, Long Radius, Short Radius)
  • Tees (Equal Tee, Reducing Tee)
  • Reducers (Concentric & Eccentric)
  • Pipe Caps
  • Stub Ends
  • Cross Fittings
  • Bends

Specification of ASTM A403 WP304 Pipe Fittings

Specification Details
Standard ASTM A403 / ASME SA403
Grade WP304 / WP304L
½” to 48” Size Range
Thickness SCH 10 to SCH 160
Manufacturing Type Seamless / Welded
Standards ASME B16.9, MSS-SP-43
Pressure Rating As per ANSI standards

Chemical Composition of ASTM A403 WP304 Pipe Fittings

Element Composition (%)
Carbon (C) 0.08 max
Manganese (Mn) 2.00 max
Silicon (Si) 1.00 max
Chromium (Cr) 18.0 – 20.0
Nickel (Ni) 8.0 – 10.5
Phosphorus (P) 0.045 max
Sulfur (S) 0.03 max

Mechanical Properties of ASTM A403 WP304 Pipe Fittings

Property Value
Tensile Strength 515 MPa min
Yield Strength 205 MPa min
Elongation 35% min
Hardness 201 HB max

ASTM A403 WP304L Pipe Fittings Dimensions, Thickness & Size Chart

Below is a refined and uniquely structured dimension table for ASTM A403 WP304L pipe fittings. All measurements are provided in inches and follow ASME B16.9 standards for buttweld fittings.

Nominal Pipe Size (NPS) 90° Elbow (LR) 90° Elbow (SR) 45° Elbow 180° Return Tee (Center to End) Reducer Length Cap Length
1/2"1.50-0.623.001.001.381.00
3/4"1.50-0.753.001.121.691.00
1"1.501.000.883.001.502.001.50
1¼"1.881.251.003.751.882.501.50
1½"2.251.501.124.502.252.881.50
2"3.002.001.386.002.503.621.50
2½"3.752.501.757.503.004.121.50
3"4.503.002.009.003.385.002.00
4"6.004.002.5012.004.126.192.50
6"9.006.003.7518.005.628.503.50
8"12.008.005.0024.007.0010.624.00
10"15.0010.006.2530.008.5012.755.00
12"18.0012.007.5036.0010.0015.006.00
16"24.0016.0010.0048.0012.0018.507.00
20"30.0020.0012.5060.0015.0023.009.00
24"36.0024.0015.0072.0017.0027.2510.50
30"45.00-18.5090.0022.00-10.50
36"54.00-22.25108.0026.50-10.50
42"63.00-26.00126.0030.00-12.00
48"72.00-29.88144.0035.00-13.50

Wall Thickness & Schedule Range

ASTM A403 WP304L pipe fittings are available in multiple wall thicknesses to suit different pressure requirements:

  • SCH 5

  • SCH 10

  • SCH 20

  • SCH 40

  • SCH 80

  • SCH 160

  • XXS (Extra Strong)

Key Notes

  • All dimensions are approximate and may vary slightly depending on manufacturing tolerances.
  • Sizes range from ½” to 48” and above on request.
  • Both seamless and welded fittings are available.
  • Custom dimensions and non-standard schedules can be manufactured as per client requirements.

ASTM A403 WP304 Pipe Fittings Sizes

ASTM A403 WP304 pipe fittings are available in a wide range of sizes:

  • Seamless Fittings: ½” to 24”
  • Welded Fittings: ½” to 48”
  • Wall Thickness: SCH 10, SCH 20, SCH 40, SCH 80, SCH 160

ASTM A403 Threaded Fittings

In addition to buttweld fittings, ASTM A403 WP304 threaded fittings are also available for low-pressure applications. These include:

  • Threaded Elbows
  • Threaded Tees
  • Couplings
  • Unions
  • Bushings

Threaded fittings are easy to install and are suitable for systems where welding is not required.

ASTM A403 WP304 Pipe Fittings Price

The price of ASTM A403 WP304 pipe fittings depends on several factors:

  • Size and thickness (SCH 40, SCH 80, etc.)
  • Type of fitting (elbow, tee, reducer)
  • Manufacturing method (seamless or welded)
  • Quantity and customization

Metinox Overseas offers competitive pricing for SA 403 WP 304 fittings while maintaining high quality and compliance with international standards.

ASTM A403 WP304L Pipe Fittings Packing and Shipment

ASTM A403 WP304L Pipe Fittings are packed with utmost care to ensure safe handling and damage-free delivery. Each fitting is individually placed in protective plastic sleeves and further wrapped with moisture-resistant materials to prevent exposure to dust, humidity, and external damage. The products are then securely bundled using strong nylon straps to maintain stability during transit. Proper labeling is done on every package, clearly mentioning product details, size, grade, and quantity for easy identification.

For bulk shipments, ASTM A403 WP304L pipe fittings are packed as per international export standards. The bundles are tightly strapped with durable metal or plastic strips and carefully loaded into containers to avoid movement or impact during transportation. Metinox Overseas ensures strict adherence to quality packaging practices to maintain product integrity from dispatch to delivery.

Delivery Timeline: Orders are typically dispatched within 10–25 days, depending on stock availability and order specifications.

Types of Packaging:

  • Hexagonal Bundles
  • Wooden Boxes
  • Steel or Wooden Crates
  • Customized Crates for U-Bend Tubes (with separated radii)
  • Export-standard packaging as per customer requirements

Special Packaging Features:

  • Bundles wrapped in protective plastic for weather resistance
  • Ends of SS 304L fittings secured with plastic caps or strips
  • Strong strapping to prevent loosening during transit
  • U-bend tubes packed with separators to avoid damage
  • Laminated packing list included inside each box or crate

ASTM A403 WP304L Pipe Fittings Applications & Usage

ASTM A403 WP304L pipe fittings are widely used in systems where the transfer, processing, and handling of fluids such as liquids, gases, and chemicals are essential. Due to their excellent corrosion resistance, durability, and weldability, these fittings are suitable for a broad range of industrial applications.

Key Industries Include:

  • Energy Sector:
    Used extensively in oil and gas operations, including upstream exploration, midstream transportation (pipelines, storage, shipping), and downstream refining processes. Also applied in power generation plants, including thermal, nuclear, and geothermal energy systems.
  • Food & Beverage Industry:
    Ideal for hygienic processing environments such as dairy, beverage production, and food manufacturing. Also used in cold storage systems and desalination plants for water purification.
  • Pharmaceutical & Biotechnology:
    Essential in the manufacturing of medicines, vaccines, and healthcare products, where contamination-free piping systems are critical.
  • Semiconductor Industry:
    Utilized in highly controlled environments for producing microchips and electronic components used in modern devices.
  • Pulp & Paper Industry:
    Applied in the production of paper products, including packaging materials, books, and printing paper.
  • Construction & Plastics Manufacturing:
    Used in the production of building materials such as glass, roofing systems, electrical wiring components, and various plastic products used in infrastructure.

These versatile applications highlight the reliability and performance of ASTM A403 WP304L pipe fittings across diverse industrial sectors.

FAQs on ASTM A403 WP304 Pipe Fittings

ASTM A403 WP304 is an austenitic stainless steel grade used for manufacturing buttweld pipe fittings with excellent corrosion resistance and strength.

ASTM A403 is a standard that covers wrought austenitic stainless steel pipe fittings for pressure piping applications.

It mainly contains chromium (18–20%) and nickel (8–10.5%) along with small amounts of carbon, manganese, and silicon.

The thickness of Schedule 40 SS 304 pipe varies depending on the pipe size, typically ranging from 2.77 mm to 12.7 mm.

ASTM A403 defines the material specification, while ASME B16.9 specifies the dimensions, tolerances, and manufacturing standards for fittings.

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