STUB END Fittings

Benefits

• Simplified Bolt-Hole Alignment: The backing flange rotates freely behind the stub end collar, which completely removes the need to align piping weld joints with fixed flange bolt holes during installation.

• Significant Material Cost Savings: In highly corrosive systems, only the stub end needs to be made of expensive corrosion-resistant alloys, while the loose backing flange can be made of economical carbon steel.

• Quick Assembly and Maintenance: Enables rapid mechanical disconnection and fast re-assembly of pipeline segments, making it highly useful for systems requiring routine cleaning or localized repairs.
  
  

  Applications

  Stub end fittings are widely used in industrial operations where piping systems must be regularly opened for clean-outs or structural adjustments. In chemical processing plants and paper mills, Stainless Steel and High Nickel Alloy stub ends are welded to the pipe runs to transport aggressive reagents, allowing operators to easily separate joints for maintenance without damaging expensive corrosion-proof lines. In municipal wastewater facilities and desalination plants, Carbon Steel and Cupronickel stub ends handle high-volume flow runs, offering a robust flanged connection that resists heavy environmental wear. Within energy generation loops, heavy-walled Alloy Steel stub ends are deployed in steam distribution systems to absorb mechanical stresses and facilitate easier alignment of piping lines near turbines and heavy machinery.