Butt-Welded Stub End Fittings
Butt Weld
Butt-Welded Stub End Fittings
Butt-Welded Stub Ends are precision-engineered piping components used in conjunction with lap joint flanges to create a rotating, non-permanent flange connection. Designed to be welded directly to the pipe, the stub end allows the backing flange to rotate freely, ensuring easy alignment during installation. These fittings are widely used in systems requiring frequent dismantling, inspection, or maintenance.
Manufactured using advanced forging and butt-weld preparation techniques, butt-welded stub ends provide excellent dimensional accuracy, high mechanical strength, and reliable sealing performance in demanding industrial applications.
Features of Butt-Welded Stub Ends
Flangeman Steel Worldwide Pvt Ltd’s Butt-Welded Stub Ends are engineered for strength, flexibility, and ease of installation. Key features include:
Lap joint compatibility: Used with lap joint flanges for easy alignment and bolting.
Rotatable flange connection: Simplifies installation and maintenance.
High strength and durability: Suitable for high-pressure and high-temperature environments.
Smooth bore finish: Ensures efficient flow with minimal turbulence.
Permanent weld connection: Butt-weld end provides a strong and leak-proof joint.
Material versatility: Available in carbon steel, stainless steel (304/316), alloy steel, duplex, and special alloys for corrosion resistance.
Standards compliance: Manufactured as per ASME B16.9, MSS-SP-43, ASTM A234 WPB, and relevant ASTM specifications.
Material Used in Manufacturing
Steel
Carbon Steel
Alloy Steel
Duplex & Super Duplex Stainless Steel
Nickel Based Alloys
Applications
Butt-Welded Stub Ends are widely used in systems where frequent dismantling or alignment flexibility is required:
Oil & Gas pipelines and refineries
Petrochemical and chemical processing plants
Refineries
Power Generation
Boiler Systems
Water Treatment Plants
Industrial Process Piping
Marine & Offshore Projects
Standards and Specification
| Parameter | Specification |
|---|---|
| Product Name | Butt-Welded Stub End |
| Connection Type | Butt-Weld |
| Type | Long Pattern / Short Pattern |
| Size Range | 1/2” to 24” (DN15 – DN600) |
| Pressure Class | ANSI/ASME B16.9 / As per flange rating |
| Material | Carbon Steel, Stainless Steel (304/316), Alloy Steel, Duplex |
| Manufacturing Process | Forged / Formed & Butt-Weld Preparation |
| Design Standard | ASME B16.9, MSS-SP-43, ASTM A234 WPB |
| Testing | Hydrostatic Test, PMI Test, Visual & Dimensional Inspection |
| Surface Finish | Black, Pickled & Passivated, Polished |
Why Choose Flangeman Steel Worldwide Pvt Ltd?
Compact and strong design for tight piping layouts.
High-performance materials for durability and corrosion resistance.
Rigorous quality control including hydrostatic and dimensional testing.
Long service life with minimal maintenance for critical piping systems.
Butt-Welded Stub Ends from Flangeman Steel Worldwide Pvt Ltd provide reliable flow distribution, mechanical strength, and compliance with international standards, making them suitable for demanding industrial and process piping systems.
Lets Get in Touch!
Welcome to Flangeman Steel Worldwide Pvt. Ltd. – Shaping Strength with Precision Our journey, firmly grounded in a legacy of excellence, has evolved into a dynamic new phase of growth and innovation. With a renewed vision and global outlook, we continue to redefine standards in steel solutions, building a stronger and more sustainable future.