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Plug fittings are essential mechanical components that help seal the ends of pipes, tubes, or fittings in a piping system. They’re crafted to create a secure, leak-proof closure, making them perfect for situations where you might need to extend or maintain the line later on. You can find plug fittings made from various materials like stainless steel, carbon steel, brass, copper, and special alloys, each tailored to meet different temperature, pressure, and corrosion-resistance needs. Their straightforward yet effective design has made them a go-to choice in industries such as oil and gas, chemical processing, water treatment, hydraulics, and instrumentation.
These fittings come in a range of types, including hex head plugs, square head plugs, round head plugs, and socket weld plugs, catering to different installation requirements. Depending on how they connect, plug fittings can be threaded, welded, or compression-type. For example, stainless steel plug fittings are favored in high-pressure and corrosive settings because of their durability and reliable sealing capabilities. Meanwhile, brass and copper plugs are commonly used in plumbing, HVAC, and low-pressure systems due to their ease of installation and cost-effectiveness.
| Forged Plug Fittings | Specifications |
| Class | 3000#, 6000#,9000# in ANSI B 16.11 |
| Size | 1/2″NB to 4″NB |
| Type | Forged Plugs, Threaded Plugs, Screwed Plugs |
| Grades | |
| Stainless Steel | ASTM A 182 – 304, 304L, 304H, 309, 310, 316, 316Ti, 316H, 316 L, 317, 317L, 321, 347, 904L. |
| Duplex Steel | ASTM A 182- F51, F53,F55. |
| Carbon Steel | ASTM A 105 |
| Alloys Steel | ASTM A 182- F5, F9, F11, F21, F22 & F91 |
| Copper Nickel | C70600(90:10), C71500 (70:30), C71640 |
| Nickel | UNS N02200, N02201 |
| Monel | UNS N04400, N05500, Alloy 20 |
| Inconel | UNS N06600, N06601, N06625, N08800, N08810, N08825 |
| Hastelloy | UNS N10276, N06022, N10665, N06905 |
| Titanium | Gr.1, 2, 3, DTH 3.7035, DTH 3.7055 |
| Brass | C 27000, C 27200, C 28000 |
| Aluminium | 6063, 6061T6/T651, 6082 T6/T651, 5052, 5083, 5086, 7075, 1100, 2014, 2024 |
| SMO 254 | SMO 254 |
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One of the best things about plug fittings is how easy they are to install, remove, and replace, making them suitable for both permanent and temporary sealing tasks. They play a crucial role in system maintenance by allowing sections of piping to be closed off during testing, repairs, or modifications. With their versatility, strength, and leak-tight performance, plug fittings are key to ensuring the safety and efficiency of piping and tubing systems, making them an indispensable part of various industries.
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