High-Precision Heat Exchanger Tubes: Ultra-Long, Ultra-Clean & Multi-Grade Excellence

At GAOLIN TECH, we push the boundaries of thermal engineering. Our seamless heat exchanger tubes are designed for global industries that demand the highest levels of corrosion resistance, internal cleanliness, and structural continuity.

We specialize in a comprehensive range of Austenitic Stainless Steels and High-Nickel Alloys, offering customized solutions for the most challenging heat transfer environments.

Our Core Competitive Advantages

1. Industry-Leading Length: Up to 35 Meters Seamless

We eliminate the risks associated with intermediate welding. GAOLIN TECH can produce single, continuous seamless tubes with a maximum length of 35 meters.

Minimized Leakage Points: Ideal for large-scale shell and tube heat exchangers and condensers.

Cost Efficiency: Reduces installation time and orbital welding costs for ultra-long thermal units.

2. Advanced Bright Annealing (BA) for Total Inner Cleanliness

To ensure peak thermal efficiency, our tubes undergo Bright Annealing (BA) in a controlled hydrogen atmosphere.

Mirror-Like Internal Surface: This process prevents oxidation and scale formation, resulting in an ultra-smooth ID (Internal Diameter).

Anti-Fouling Performance: Smooth surfaces significantly reduce carbon deposition and scaling, extending maintenance cycles.

High-Purity Ready: Essential for semiconductor, pharmaceutical, and UHP gas applications.

3. Zero-Defect Assurance: 100% Ultrasonic Testing (UT)

Safety in high-pressure systems is non-negotiable. We provide 100% Ultrasonic Testing (UT) as a standard or optional protocol.

Precision Inspection: Detects sub-surface flaws, longitudinal/transverse cracks, and precise wall thickness variations.

Standard Compliance: Fully compliant with ASTM A213, A269, and EN 10216-5.

Comprehensive Material Portfolio (Austenitic & Beyond)

We support a wide array of international grades to match your specific corrosive media and temperature requirements:

●Standard Grades: TP304/304L, TP316/316L (The industry benchmarks).

●Stabilized Grades: TP321/321H, TP347/347H (Excellent for high-temperature service and intergranular corrosion resistance).

●High-Temperature & Oxidation Resistant: TP310S, 310H (Ideal for furnace tubes and extreme heat environments).

●High-Molybdenum Corrosion Resistant: TP317L, 904L (N08904) (Superior resistance to chloride pitting and phosphoric/sulfuric acids).

●Super Austenitic & Duplex: S31254 (254SMO), S31803, S32205, S32750.

●Nickel Alloys: Alloy 600, 625, 800, 825, C276.

Technical Specifications

Applications

●Petrochemical & Refining: Large-scale condensers and pre-heaters.

●Power Generation: Nuclear and supercritical coal-fired plant exchangers.

●Marine & Offshore: Seawater cooled heat exchangers.

●Chemical Processing: Production of acids, fertilizers, and polymers.

Your Trusted Export Partner

GAOLIN TECH offers specialized industrial packaging for 35-meter tubes, utilizing reinforced steel-framed wooden crates to ensure zero bending or damage during international transit. With complete MTR (Material Test Report) documentation and third-party inspection support, we are your reliable link in the global supply chain.

Optimize your thermal systems with the length and precision of GAOLIN TECH.

GAOLIN TECH – Precision in Every Meter. Excellence in Every Grade.