Welded Fittings

Welded fittings are essential components used to connect and join pipes, valves, and other pipe elements. They provide a strong, leak-proof connection by using welding techniques, ensuring durability and reliability in various industrial applications. Due to their robust structure and high strength, welded fittings are widely used across different sectors such as petrochemical, chemical processing, power generation, and more.

Welded Steel Fittings Specification

View ASTM A403 welded fittings sizes, dimensions and application

ASTM A403 welded fittings are forged and rolled austenitic stainless steel fittings commonly used in pressure piping systems. They are ideal for use in engineering industries, energy transformation plants, and other demanding environments where corrosion resistance and strength are critical.

The ASTM A403 standard includes various grades of austenitic stainless steel. The following table outlines the available dimensions of welded fittings:

Dimensions of Welded Fittings

Welded Pipe Fittings Applications

• Petrochemical
• Chemical processing
• Water treatment
• Power generation
• Oil and gas

Refer various welded fittings standards such as ASME B16.9 and MSS SP-43

Welded fittings manufactured according to ASME B16.9 cover scope, size, material, pressure ratings, etc. Meanwhile, those fabricated under MSS SP-43 are typically used in low-pressure and corrosion-resistant applications.

The following table provides more details about the ASTM standards for seamless and welded fittings, including how they are used and in what form or condition.

Seamless and Welded Fittings Standards

Welded steel pipe fittings are available in beveled and plain ends

Welded pipe fittings with beveled ends are often used by manufacturers manually or through automated processes to ensure stability. This allows for a perfect combination with butt-weld fittings, making the welding process simpler and more efficient.

Welded steel fittings with plain ends are commonly used for creating strong, leak-proof joints. Their ends are smooth and do not have any threaded parts.

HS Code for Welded Pipe Fittings

Welded Carbon Steel Fittings Benefits

• Allow thin thickness (SCH 10 or SCH 10S)
• Various sizes (1/4″ to 24″)
• Many possibilities for twisting and ease of welding
• Butt weld saves more cost than socket weld or threaded

ASME B16.9 Buttweld Elbow Dimension

Welded Buttweld Pipe Fittings can be manufactured in various types and wall thickness

They can be manufactured in several types and wall thicknesses to suit a wide range of applications and environments. Different piping systems operate under varying temperature and pressure conditions, requiring pipe fittings that offer suitable strength and longevity.

Therefore, manufacturers can provide pipe fittings based on the required wall thickness—whether thicker or thinner—ensuring they can withstand certain pressures without damage.

What is welded fittings?

• Components used to connect, direct, or change the direction of pipes
• Provides strong, durable, and leak-proof connections
• suitable for high pressures and harsh environments
• Types: elbows, tees, reducers, stub end, and caps

Welded black iron fittings connect pipes using a weld for a robust connection

Welded black iron fittings connected to pipes create a permanent, leak-proof connection. This type of connection offers resistance against high pressure and temperature applications.

The robust connection involves using heat to melt the welded black iron fitting and joint, resulting in a permanent attachment. This process ensures high strength, leak resistance, and safety for the pipe fitting.

Difference Between Seamless and Welded Fittings

Welded Tee Dimension