Gnee Steel (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of astm a249 tp316l bright annealed tube for heat exchanger in China. With abundant experience, we warmly welcome you to wholesale customized astm a249 tp316l bright annealed tube for heat exchanger from our factory. For price consultation, contact us.
Are you looking for heat exchanger tubes that sustain long-cycle operation in high-pressure, corrosive environments without the risk of weld failure?Gnee provides premium ASTM A249 TP316L Bright Annealed (BA) welded tubes specifically engineered for the chemical, refining, and desalination industries. Our solutions are designed to solve critical industry challenges such as heat exchanger fouling and localized weld pitting.
Our TP316L stainless steel welded tubes strictly comply with ASTM A249 standards. During production, the weld seams undergo deep cold working, integrated with 1050°C oxygen-free online bright annealing in a pure hydrogen atmosphere. This advanced process ensures that the weld's microstructure is fully consistent with the base metal while effectively eliminating internal stress. Furthermore, 100% of our weld seams pass rigorous Eddy Current or Ultrasonic testing to guarantee a defect-free surface (no cracks or porosity), meeting the stringent safety benchmarks required for high-pressure heat transfer applications.
ASTM A249 TP 316L Small Diameter Tubing
UNS S31603 ERW Tubing
We employ an oxygen-free annealing (BA) treatment on ASTM A249 TP316L heat exchanger tubes to ensure a smooth surface finish (Ra < 0.4-0.8μm), resulting in a smooth inner wall, reduced scaling, improved heat exchange efficiency, and extended cleaning intervals. Oxygen-free annealing guarantees a free surface of oxidation and grease, preventing corrosion and addressing issues such as corrosion and weld cracking, ensuring long-term stable operation.
Whether for standard products or customized needs, we can provide reliable solutions to meet your high standards and specific requirements.
In addition, we also offer TP316L stainless steel U-tubes for heat exchangers, TP316L stainless steel coils tube for heat exchangers, and TP316L stainless steel condenser tubes.
Mill test certificates will be issued according to EN10204.3.
All tubes shall be supplied as per applicable ASTM A249 /A249M Specification.
If you are interested in our products and services, please feel free to contact me. Our team is always ready to provide you with support and assistance!
Each pipe must pass 100% eddy current testing (ET) and hydrostatic testing. All products come with an EN 10204 3.1 quality certificate, recording accurate data on flaring, flattening, and mechanical properties, and all materials are accompanied by ASTM A262 Practice A or E intergranular corrosion test reports.
airtightness test
ASTM A249 TP316L tube PMI
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We possess fully automated high-frequency induction welding production lines and online bright annealing technology, ensuring an internal weld coefficient of 1.0 and achieving industry-leading outer diameter tolerance control within ±0.03mm. GNEE has maintained a 99.7% customer acceptance rate for 10 consecutive years, providing zero-leakage, long-life pipe guarantees for global thermal engineering projects.
Packaging
For global exports, we use specially made high-strength wooden crates and sealed tube ends to ensure that the BA surface is protected from moisture and scratches during sea transport.
Stainless Steel Tubes PE Fabric Bundles
ASTM A249 TP316 wooden case packages
Customer visit and sign the order
GNEE is the most experienced supplier of SA 249 TP316L seamless steel pipes in the Middle East, Oman, Egypt, South Africa, and the United States. They export 1000 tons annually!
