1. Implementation Standard: National Standard GB/T Copper Alloy Seamless Tube for Heat Exchangers;
International Standards ASTM B111, JIS H3300, BS EN 12451, EN 12449, etc.
2. Quality: Clean, bright and smooth surface; burr-free ends; 100% eddy current tested;
3. Condition: Bright annealed soft state
4. Specifications: OD 4mm to OD 65mm; wall thickness 0.35 to 12mm; length <12 meters;
5. Processing Method: Extrusion followed by cold drawing
6. Characteristics: Admiralty brass alloy offers strong corrosion resistance in harsh environments.
Advantages: High strength; excellent corrosion resistance, adequate machinability, and high impact resistance.
7. Applications: Naval brass tubes are used for marine components or other parts in contact with seawater, as well as for heat exchangers such as power plant condensers, desalination evaporators, petrochemical coolers, condensers, evaporators, refinery facilities, ship modifications, marine engineering, shell and tube heat exchangers, and marine air coolers.
why choose us
Professional copper pipe supplier
As a professional enterprise dedicated to global copper product trade since 2008, GNEE Metal Group deeply recognizes the quality and responsibility embodied in the ASTM B111 standard. This standard not only specifies chemical composition and mechanical properties but also represents a comprehensive quality commitment spanning manufacturing processes to testing and verification. GNEE solemnly assures global customers that every ASTM B111-standard condenser tube and copper alloy tubing we supply will strictly adhere to its requirements for seamless manufacturing, annealing treatment, eddy current testing, and various mechanical performance tests.
Contact us today for a quotation：sales@gneesteel.com
Packaging and shipping
GNEE offers professional packaging for exported copper pipes. First, we apply anti-rust oil and plastic film to prevent oxidation. Then, we securely strap with steel straps and add corner protectors. Finally, we place the pipes on wooden pallets and reinforce them with iron or wooden boxes, ensuring they are moisture-proof and impact-resistant during ocean transport, while facilitating easy loading and unloading. All packaging meets export standards.
Customer visits
GNEE participated in the exhibition
