Stainless Steel Swage Nipple

A Stainless Steel Butt Weld Swage Nipple is an essential fitting for connecting pipes of different sizes in a durable, leak-proof, and efficient manner. Available in a wide range of grades, sizes, and configurations, it meets the stringent demands of industries worldwide. Whether used in oil and gas pipelines, chemical plants, or high-pressure steam systems, these fittings ensure operational reliability, long service life, and cost-effective performance.

A Stainless Steel Butt Weld Swage Nipple is a critical pipe fitting used in various industries for connecting pipes of different diameters. Known for its durability, corrosion resistance, and smooth flow characteristics, it provides a reliable transition between pipes while maintaining a leak-proof connection. These fittings are extensively used in oil and gas pipelines, chemical plants, water treatment systems, petrochemical refineries, and power generation facilities due to their robust construction and long service life.

Swage nipples are manufactured with a butt-weld end, making them ideal for high-pressure, high-temperature, and corrosive environments, ensuring a secure and permanent connection. With availability in multiple stainless steel grades, sizes, schedules, and end finishes, they are an indispensable component in modern piping systems.

A butt weld swage nipple is a type of reducer fitting that connects two pipes of different sizes. It features a butt-weld end that allows for a seamless, flush connection with the pipe. The smooth internal surface minimizes turbulence and pressure loss, making it ideal for high-velocity flow systems.

Key features include:

• Butt-weld design for a strong, leak-proof joint.
• Tapered or straight configurations to match piping specifications.
• Variety of wall thicknesses (Schedule 10, 20, 40, 80, and more).
• Manufactured as per ASME, ANSI, MSS-SP-95, and DIN standards.

Materials and Grades

Stainless Steel Butt Weld Swage Nipples are produced in a variety of austenitic, martensitic, and duplex stainless steel grades to meet specific industrial needs. Common materials include:

• Austenitic Grades: SS 304, 304L, 304H, 316, 316L, 316Ti, 321, 347
• Martensitic Grades: SS 410, 420, 431
• Duplex and Super Duplex: UNS S31803 (Duplex 2205), UNS S32750/S32760 (Super Duplex)
• Special Grades: SS 309, 310, 317L, 347H for high-temperature applications

These materials provide excellent corrosion resistance, mechanical strength, and durability, ensuring that the swage nipple can withstand aggressive environments, including seawater, acidic media, and high-pressure steam.

Types of Stainless Steel Butt Weld Swage Nipples

Swage nipples come in several configurations to suit different installation requirements:

Concentric Swage Nipple

Maintains the centerline of the pipe.

Used where the flow is uninterrupted and aligned.

Eccentric Swage Nipple

Off-center design to avoid air accumulation or cavitation.

Ideal for horizontal pipe runs where drainage is important.

Reducing Swage Nipple

Connects pipes of differing diameters.

Available in custom sizes for specific flow requirements.

Hex Swage Nipple

Designed with a hexagonal body for easy installation and tightening.

Often used in instrumentation and control piping.

Manufacturing Standards

Stainless Steel Butt Weld Swage Nipples are manufactured according to international standards to ensure precision and reliability:

• ASME B16.9
• ANSI B16.11
• MSS-SP-95
• DIN & JIS Standards

Dimensional accuracy and quality control processes guarantee that each fitting delivers optimal performance and longevity.

End Connections and Finishes

• Swage nipples are typically designed with butt-weld ends that can be welded directly to the pipe, ensuring a smooth bore and reduced pressure drop. Available finishes include:
• Plain ends
• Beveled ends (standard for butt weld)
• Pickled, passivated, or polished surfaces for enhanced corrosion resistance

Applications of Stainless Steel Butt Weld Swage Nipples

These fittings are widely used in industries where reliability and leak-proof performance are critical:

• Oil and Gas Industry – For drilling, production, and transport pipelines
• Chemical and Petrochemical Plants – Handling corrosive chemicals and fluids
• Power Generation – Steam, condensate, and cooling water systems
• Pharmaceutical and Food Processing – Hygienic piping applications
• Water Treatment Facilities – Desalination and purification systems
• Marine and Offshore Industries – Seawater-resistant piping

Advantages of Using Stainless Steel Butt Weld Swage Nipples

• Superior Corrosion Resistance: Suitable for harsh and corrosive environments.
• Leak-Proof Joints: Butt-weld connections provide high structural integrity.
• High-Pressure and High-Temperature Tolerance: Can handle challenging operational conditions.
• Longevity and Low Maintenance: Reduces downtime and operational costs.
• Versatile Sizes and Schedules: Available in a wide range of dimensions to suit various piping systems.
• Compliance with International Standards: Ensures reliability and global compatibility.