A stainless steel stub end is a type of butt weld pipe fitting used with lap joint flanges to connect piping systems. It is widely applied in industrial pipelines where frequent dismantling, inspection, or maintenance is required.
Senrui supplies high-quality lap joint stub end pipe fittings manufactured according to international standards such as ASME B16.9, MSS SP-43, EN10253 and ASTM A403, suitable for oil & gas, petrochemical, power plant and marine industries.
We provide full size range, multiple materials, and custom manufacturing for global engineering projects.
A stub end is a short pipe fitting that is welded to a pipe and used together with a lap joint flange.
It is designed to:
👉 It is widely used in systems requiring frequent inspection or replacement.
Used with standard lap joint flanges. Most commonly applied in piping systems.
Used with slip-on flanges, suitable for specific engineering designs.
Short pattern stub end, used in compact installation space.
| Parameter | Description |
|---|---|
| Product Name | Stub End / Lap Joint Stub End |
| Types | Type A / B / C |
| Standard | ASME B16.9, MSS SP-43, EN10253, ASTM A403 |
| Material | Stainless Steel / Carbon Steel / Alloy Steel / Duplex |
| Grades | SS304, SS304L, SS316, SS316L, Duplex 2205 |
| Size Range | 1/2” – 48” (DN15 – DN1200) |
| Wall Thickness | SCH10 / SCH20 / SCH40 / SCH80 / SCH160 |
| Connection Type | Butt Weld |
| Surface | Pickled / Polished / Sand Blasted |
| Material | Features | Application |
|---|---|---|
| SS304 | General corrosion resistance | Industrial piping |
| SS316 | Strong corrosion resistance | Chemical & marine |
| SS316L | Low carbon, anti-corrosion | High purity systems |
| Duplex Steel | High strength & corrosion resistance | Offshore & oil & gas |
| Standard | Description |
|---|---|
| ASME B16.9 | Butt weld fitting standard |
| MSS SP-43 | Light wall stub end standard |
| EN10253 | European pipe fitting standard |
| ASTM A403 | Stainless steel material standard |
Stainless steel stub ends are widely used in:
What is a stub end used for?
It is used with lap joint flanges to connect piping systems with easy disassembly.
What is the difference between stub end and flange?
A stub end is welded to pipe, while flange is not welded directly to the pipe.
What are the types of stub end?
Type A, Type B and Type C.
What materials are available?
Stainless steel, carbon steel, alloy steel and duplex steel.
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