
Union
At Metrade, we specialize in providing high-quality Forged Unions that deliver reliable, durable, and leak-proof connections for your piping systems. Each union supports smooth assembly and disassembly, allowing you to handle maintenance, repairs, and system modifications with greater efficiency. Our team applies strict quality standards and advanced machining techniques to ensure consistent performance in a wide range of demanding environments.
A typical fitting features three essential parts—the body, nut, and tailpiece—threaded together to form a secure and dependable connection. With their solid, one-piece construction, our forged unions withstand high pressure, extreme temperatures, and harsh operating conditions with ease. Their durability enhances overall system stability, reduces downtime, and helps your operation maintain long-term efficiency across various industrial applications.
Dimensions - 1/4" – 2"
Materials - Carbon Steel
- Low Temperature CS
- Stainless Steel
- Special Stainless Steel
- Alloy Steel
- Nickel Alloy
- Titanium Alloy
Material | Specification | Grades |
|---|---|---|
| Carbon Steel | ASTM A105 | A105 |
| Low Temperature Carbon Steel | ASTM A350 A694 | LF2 and LF3 F52 |
| Stainless Steel and Special Stainless Steel | ASTM A182 | F51, F60, F53, F55, F61, F44, UNS N08367, UNS N08926 |
| Alloy Steel | ASTM A182 ASTM A788 | F5 / 9 / 11 / 22 / 91 AISI 4140 |
| Nickel Alloy 200/201 | B564 | UNS N02200/N02201 |
| Nickel Alloy 276 | B564 | UNS N10276 - Hastelloy C-276 |
| Nickel Alloy 400 | B564 | UNS N04400 - Monel 400 |
| Nickel Alloy 600 | B564 | UNS N06600 - Inconel 600 |
| Nickel Alloy 625 | B564 | UNS N06625 - Inconel 625 |
| Nickel Alloy 800H/800HT | B564 | UNS N08810/N08811 - Incoloy 800H/HT |
| Nickel Alloy 825 | B564 | UNS N08825 - Incoloy 825 |
| Titanium Alloy | B381 | Gr 1 / 2 / 5 / 7 |
A union is a high-pressure pipe fitting used to connect two pipes and allow easy disconnection without causing deformation or damage to the piping system. Made by forging carbon steel, stainless steel, or alloy steel under high pressure, forged unions offer exceptional strength, durability, and resistance to corrosion, temperature, and mechanical stress. They are ideal for applications requiring frequent assembly and disassembly, such as in maintenance operations or equipment connections in industries like oil and gas, petrochemical, power generation, and chemical processing. A standard forged union consists of three parts: a male end, a female end, and a central nut that draws the ends together to form a tight, leak-proof seal. Their compact design, ease of installation, and ability to maintain a strong, reusable joint make forged unions a reliable choice in high-performance piping systems.

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