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A Stub End is an essential pipe fitting used to join a pipe to a flange, typically in conjunction with a lap joint flange. It is designed to provide a reliable connection for systems where frequent disassembly and reassembly are needed. The stub end features a cylindrical shape that allows it to be welded to the pipe while providing a surface for the flange to connect, ensuring a secure and leak-proof joint.
Stub ends are made from high-strength materials such as stainless steel, carbon steel, alloy steel, and duplex steel, offering excellent corrosion resistance and the ability to withstand high-pressure and high-temperature environments. Available in various wall thicknesses and suitable for both welded and flanged connections, stub ends provide flexibility for a wide range of piping systems, including those in critical industries.
Widely used in industries such as oil & gas, petrochemical, chemical, power generation, and water treatment, stub ends comply with international standards like ASME B16.9, DIN, and ISO. Their precise design ensures tight, leak-proof connections and long-term system integrity, making them indispensable in maintaining the efficiency and reliability of fluid and gas transmission systems.
| Specification | Details |
|---|---|
| Product | Pipe Fitting Stub End (Lap Joint Stub End, Short Stub End) |
| Size Range | 1/2" NB to 48" NB (DN15 to DN1200) – Custom sizes available |
| Types |
Lap Joint Stub End: Designed for use with lap joint flanges, ideal for easy disassembly. Short Stub End: A shorter version of the stub end, used for compact and space-saving applications. |
| Wall Thickness | Sch 10, Sch 20, Sch 40, Sch 80, Sch 160, Sch XXS (As per ASME/ANSI standards) |
| Standards | ASME B16.9, MSS-SP-75, DIN 2616, EN 10253, ISO 3419, JIS B2312 |
| Material Grades |
Stainless Steel: 304, 304L, 316, 316L, 321, 347 Carbon Steel: ASTM A234 WPB / WPC Alloy Steel: ASTM A234 WP1, WP5, WP9, WP11, WP22, WP91 Duplex / Super Duplex: UNS S31803, S32205, S32750, S32760 Nickel Alloys: Inconel, Monel, Hastelloy, Alloy 20 Other Alloys: Titanium, Copper Nickel, Aluminium |
| Manufacturing Process | Seamless, Welded, Buttweld, Forged |
| Ends | Beveled Ends (BE), Plain Ends (PE), Threaded (NPT/BSP) |
| Surface Finish | Black, Pickled, Sand Blasted, Polished, Anti-Rust Coated |
| Testing & Certification | Hydrostatic Test, Non-Destructive Testing (NDT), PMI Test, IBR / Third-Party Inspection |
| Applications | Oil & Gas, Petrochemical, Chemical Processing, Power Plants, Marine, Water Treatment, Construction, Shipbuilding, HVAC, Fertilizer Plants, and General Engineering |
| Special Features | Leak-Proof Connection, High Strength, Excellent Corrosion Resistance, Easy Disassembly, Long Service Life |
| Stub End Design Features |
Flanged Joint Compatibility: Ideal for lap joint flange connections, allowing easy disassembly. Corrosion Resistance: Made from corrosion-resistant materials to withstand harsh environments. Pressure Resistance: Can handle high-pressure systems, ensuring secure and stable connections. Compact Design: Shorter than standard pipe fittings, perfect for space-constrained applications. |
Our Pipe Fitting Stub Ends ensure reliable flange connections, high-pressure performance, and ease of disassembly, making them essential for systems requiring flexibility and strength in industrial piping applications.
Stub ends provide a reliable flanged connection for piping systems, ensuring easy attachment to lap joint flanges without the need for full welding.
Stub ends allow for easy disassembly of piping systems, making them ideal for maintenance or modifications without extensive downtime.
Crafted from durable materials like carbon steel, stainless steel, and alloys, stub ends offer superior resistance to pressure, temperature, and corrosive environments.
Manufactured to meet global standards such as ASME B16.9, DIN 2616, and ISO 3419, ensuring compatibility and long-term performance in critical piping systems.
Available in a variety of end connections like beveled, plain, and threaded, stub ends offer flexibility for a wide range of installation needs.
Stub ends are commonly used in oil & gas, petrochemical, chemical processing, power generation, and other industrial applications requiring reliable and easy-to-maintain piping connections.