Stub Ends are an essential component in piping systems, used in combination with lap joint flanges to provide a cost-effective and reliable solution for pipelines where frequent dismantling or inspection is required. Unlike traditional welded flanges, stub ends are designed with a short piece of pipe that is welded to the pipe, while the flange itself is free to rotate around it. This reduces the overall weight and material cost, especially when expensive alloys are used, since only the stub end requires the specific material while the backing flange can be made from a less costly grade. Neonox Overseas is a trusted manufacturer, supplier, and exporter of high-quality stub ends in a wide range of materials, sizes, and pressure ratings, catering to industries such as oil & gas, petrochemicals, power generation, shipbuilding, pharmaceuticals, food processing, and more.
The most common types of stub ends include Type A (short pattern), Type B (long pattern), and Type C (special design), each suited for different industrial requirements. Type A is widely used in standard lap joint flanges, while Type B is manufactured to match slip-on flanges. Type C is a versatile design that can be used with either lap joint or slip-on flanges, depending on the project specifications. At Neonox Overseas, we manufacture stub ends in accordance with international standards like ASME B16.9, MSS-SP-43, and DIN specifications, ensuring durability, precision, and corrosion resistance.
We offer stub ends in a wide variety of materials, including Stainless Steel (304, 304L, 304H, 316, 316L, 310, 321, 347), Duplex Steel, Super Duplex, Nickel Alloys, Inconel, Monel, Hastelloy, Titanium, Alloy 20, Copper Nickel, and SMO 254. These materials are carefully selected and tested to withstand high pressure, temperature, and corrosive conditions in demanding industries. For example, stainless steel stub ends are ideal for chemical processing and water treatment plants, while nickel alloy and titanium stub ends are highly preferred in marine and aerospace applications.
Stub ends are available in a wide range of dimensions, wall thicknesses, and schedules (SCH 10, SCH 40, SCH 80, SCH 160, and XXS). Their ends are typically beveled or plain, depending on the welding requirements. They are also available in seamless, welded, and fabricated forms. The welding connection of stub ends allows for easy assembly and disassembly without affecting the integrity of the pipe system, which makes them cost-effective for maintenance-intensive industries.
Neonox Overseas takes pride in offering not only standard stub ends but also custom-manufactured ones to meet specific client requirements. Each product undergoes rigorous quality testing, including dimensional checks, hydro testing, mechanical tests, PMI testing, and third-party inspections. With a global supply network, we ensure timely delivery to our clients across Asia, the Middle East, Africa, Europe, and the Americas.
By combining superior quality materials, precise manufacturing, and competitive pricing, Neonox Overseas has established itself as a trusted name for stub ends worldwide. Whether for petrochemical plants, refineries, power projects, or offshore applications, our stub ends deliver performance, reliability, and cost efficiency.
| Specification | Details |
|---|---|
| Product | Stub Ends (Type A, Type B, Type C) |
| Standards | ASME B16.9, MSS-SP-43, DIN, JIS, EN |
| Types | Short Stub End, Long Stub End, Lap Joint Stub End |
| Manufacturing Process | Seamless, Welded, Fabricated |
| Size Range | ½” NB to 48” NB |
| Wall Thickness | SCH 10S, SCH 20, SCH 40S, SCH 80S, SCH 160, SCH XXS |
| Material Grades |
Stainless Steel: 304, 304L, 304H, 316, 316L, 310, 321, 347 Duplex Steel: UNS S31803, S32205 Super Duplex Steel: UNS S32750, S32760 Nickel Alloys: Inconel 600, 625, 800, 825 Monel: 400, K500 Hastelloy: C22, C276, B2 Titanium: Gr. 2, Gr. 5 Alloy 20, Copper Nickel (Cu-Ni 70/30, 90/10), SMO 254 |
| End Connections | Beveled Ends, Plain Ends |
| Corrosion Resistance | Excellent resistance to oxidation, intergranular corrosion, and chloride stress cracking depending on material |
| Applications | Oil & Gas, Petrochemicals, Chemical Processing, Power Plants, Shipbuilding, Water Treatment, Pharmaceuticals, Food Industry |
| Testing | Hydro Test, NDT, PMI, Mechanical Testing, Third-Party Inspection |
