Metal Stub End Graphics

Metal Stub End

A Metal Stub End is a short pipe fitting used in conjunction with a lap joint flange to create a piping connection that allows easy dismantling for inspection, maintenance, or replacement. The stub end is inserted into the flange and welded to the pipe, while the lap joint flange slides over it, providing a non-welded bolted connection. Manufactured from high-quality metals such as carbon steel, stainless steel, or alloy steel, stub ends are corrosion-resistant, durable, and capable of handling high-pressure and high-temperature industrial environments. They are commonly used in chemical processing, petrochemical, oil & gas, water treatment, and power generation industries.

Key Features of Metal Stub End

  • Lap Joint Compatible: Designed to be used with lap joint flanges for easy assembly and disassembly.
  • Durable Construction: Made from carbon steel, stainless steel, or alloy steel for long-lasting performance.
  • High Pressure & Temperature Resistance: Suitable for demanding industrial piping systems.
  • Corrosion & Abrasion Resistant: Can handle aggressive chemicals, fluids, and harsh environments.
  • Easy Maintenance: Allows pipelines to be dismantled without cutting or welding.
  • Standard Compliance: Manufactured according to ANSI, ASME, and DIN standards.

Technical Information

Parameter Details
Material Grades
Carbon Steel (ASTM A182, A234 WPB), Stainless Steel (SS304, SS316), Alloy Steel (ASTM A182 F22/F91)
End Connections
Butt Weld (BW) for welding to the pipe; works with lap joint flanges
Dimensions & Standards
ANSI/ASME B16.9, B16.25, DIN 2615
Pressure Rating
Up to 2500 psi (depends on material and schedule)
Temperature Range
-50°C to 450°C (varies with material grade)
Surface Finish
Smooth internal and external surfaces for proper fit and reduced turbulence
Applications
Chemical processing, petrochemical, oil & gas, water treatment, power generation, HVAC systems
Design Type
Stub End (used with lap joint flanges)
Installation Method
Welded to pipe; flange slides over stub end for bolted connection
Special Features
Enables easy dismantling and maintenance; corrosion & abrasion resistant