Seamless Steel Tee

Introduction
Seamless steel tees are essential for creating branch connections in piping networks, offering uniform wall thickness and superior strength compared to welded alternatives. Hebei Longrun Pipeline Group Company specializes in the production of seamless steel tees that cater to high-pressure and high-temperature applications in sectors such as petrochemicals, power generation, and process engineering.

Seamless Manufacturing Advantages
Seamless tees are formed from a single piece of steel billet, eliminating the risk of weld-related defects and providing consistent mechanical properties throughout. Key benefits include:

• Uniformity: No welded seams means no localized weak points.

• Pressure Integrity: High burst and working pressure capacity.

• Temperature Resistance: Maintains strength at elevated temperatures up to 600 °C and beyond (depending on material grade).

Material Grades and Standards
Our seamless steel tees comply with ASTM A234 WPC, A403 WP304/316, and A420 WPL6 standards. We supply in both standard and low-temperature variants, with material certifications to confirm chemical composition and mechanical performance.

Dimensions and Wall Thickness
Available in nominal sizes from ½″ to 24″ and wall thickness schedules matching ASME B16.5 ranges, seamless tees maintain precise dimensional tolerances:

• O.D. and I.D. Consistency: Ensures seamless integration with mating pipes and fittings.

• Branch Outlet Orientation: 90° branch angle with options for custom orientations on request.

• Butt-Weld Ends: Prepared with beveling per ASME B16.25 for full-penetration welding.

Heat Treatment and Inspection
Post forming, all tees undergo normalization or quenching and tempering to relieve stress and refine grain structure. Non-destructive evaluation includes ultrasonic testing across all four quadrants of the branch area and magnetic particle inspection to detect surface anomalies.

Surface Preparation
Customers can choose from multiple finish options:

• Bead Blasted: Provides a uniform matte surface for painting or coating.

• Black Painted: A factory-applied coating for corrosion inhibition during storage.

• Galvanized: Zinc coating for enhanced outdoor durability.

Applications

1. Chemical Processing Plants: Reliable branch connections for side-stream sampling and reagent injection.

2. Refinery Units: Distribution manifolds for catalysts, gases, and hydraulic fluids.

3. Steam Distribution: Tee fittings in superheated steam lines due to seamless integrity.

4. Cryogenic Systems: Low-temperature tees in liquefied gas transport where embrittlement must be avoided.

5. Fire Protection Networks: Branching sprinkler lines with consistent water flow.

Quality Assurance
Hebei Longrun maintains full traceability through heat number marking and comprehensive documentation. Our facility is audited by major international classification societies, and we provide mill test reports, NDE records, and third-party inspection certificates upon delivery.

Conclusion
With our advanced seamless manufacturing processes, stringent quality checks, and a variety of material and finishing options, Hebei Longrun Pipeline Group Company stands ready to supply seamless steel tees that ensure reliable branching solutions for the world’s most demanding piping systems.