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CNC Machining

Union

Unions play a crucial role in gas plant operations, enabling safe and efficient connection of pipelines that handle various gases under pressure. Their design allows for quick disconnection during maintenance, reducing downtime and improving operational safety.
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In thermal, nuclear, and renewable power plants, unions are used to join piping systems that carry steam, water, and other fluids. Their high-temperature and pressure resistance make them essential for ensuring leak-free performance in power generation applications.
The aggressive chemicals handled in processing plants require fittings that can withstand corrosion and reactive environments. Stainless steel and nickel alloy unions offer the required durability and reliability, ensuring continuous operation without risk of contamination or failure.
Unions are vital components in refining operations, where frequent maintenance and high-pressure fluid transport are common. They provide secure connections while allowing for quick access to piping sections during inspection or repair procedures.
In the smelting and refining of metals, piping systems carry hot gases and fluids. Unions built from heat-resistant alloys provide strong, sealed joints that endure extreme temperatures, helping maintain system integrity in challenging conditions.

Key Applications of Nickel Alloy & Stainless Steel Unions

  • Ideal for connecting pipelines in high-pressure gas plants.
  • Used in power plants for safe handling of steam and water flow.
  • Suitable for chemical industries dealing with corrosive substances.
  • Commonly installed in petroleum refineries for quick maintenance access.
  • Reliable choice for metallurgical processes involving high temperatures.
  • Widely used in shipbuilding for marine-grade fluid systems.
Union
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Pipe Union Fittings

Nickel Alloy

Imperial Size: 1/4″ to 2″ NB
Metric Size: 6mm to 50mm

Stainless Steel

Imperial Size: 1/4″ to 2″ NB
Metric Size: 6mm to 50mm

Manufacturing Standard – ASTM
Dimensional Standard – ASME / ANSI B 16.9

Type Grade
Nickel Unions 200 & 201
Monel Unions 400, R-405 & K-500
Inconel Unions 600, 601, 625 & 718
Incoloy Unions 800, 800H, 800HT, 825, 925 & DS
Hastelloy Unions B-2, B-3, C-22, C-276, C-2000 & X
Cupro Nickel Unions Cu Ni 90/10 (C71500), Cu Ni 70/30 (C70600)
Duplex Unions S32205, S31803, S31550, S31254
Super Duplex Unions SAF 2507, Zeron 100, Ferralium 255
Alloy 20 Unions Alloy 20, Carpenter 20
254 SMO Unions 254 SMO
904L Unions SS 904L
Titanium Unions Gr.2, Gr.5
Nitronic Unions Nitronic 30, Nitronic 50, Nitronic 60

High-Performance Unions for Critical Piping Systems

Nickel alloy and stainless steel unions are engineered to ensure tight, secure connections in demanding environments. These fittings are manufactured in compliance with ASTM standards and follow ASME/ANSI B16.9 dimensional specifications, making them ideal for industrial piping systems that require durability, corrosion resistance, and easy maintenance. Their unique design allows for disassembly without cutting or disturbing the piping system, offering a practical solution for systems that require frequent inspection or replacement.
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Trusted Solution Across Multiple Industries

From chemical plants to shipyards, these unions are relied upon for their ability to perform under pressure, resist corrosion, and adapt to various piping configurations. Whether used in high-pressure steam lines, corrosive chemical transport systems, or offshore marine environments, the robust build quality of nickel alloy and stainless steel ensures long-term performance. Their flexibility in size and material options also allows engineers to meet the specific needs of each application with confidence.

As your one-stop manufacturing partner, Sunrise Industries maintains a complete inventory of ready-to-sell raw materials alongside custom parts fabrication and full engineering services. From prototyping to production, we provide everything at a single location—serving all industrial sectors and transforming manufacturing value chains.

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