Grade 7 Titanium Tube Suppliers in China - High-Quality Seamless Factory Options for Corrosion Resistance
Specifications
| Product Name | Grade 7 Seamless Titanium Tube |
| Grades | Gr7 Titanium |
| Dimensions & Specifications | OD (Φ6–Φ120mm) × WTH (0.1–20mm) × L (mm), and more sizes are allowed to be customized. |
| Standards | ASTM B338-2017（24）、ASTM B861-24、ASTM B862-23、GB/T3624-2023、GB/T3625-2007、ΓOCT21945-82、ΓOCT22897-86、ΓOCT24890-81、JIS H4631-2018、DIN17861-1990、DIN17866-1990 |
| Example Applications | Chemical industry, marine engineering, heat exchangers, firewater systems, ballast water systems, oil and gas industry, seawater desalination plants, and power stations. |
? Frequently Asked Questions
Q
What is Grade 7 Seamless Titanium Tube, and how does it differ from other titanium grades?
Grade 7 (Gr7) titanium is a palladium-enhanced alloy of commercially pure titanium. The addition of 0.12–0.25% palladium significantly improves its corrosion resistance in reducing and mildly oxidizing environments compared to unalloyed grades such as Gr1 or Gr2. This makes Gr7 seamless titanium tubes especially suitable for aggressive chemical and marine applications.
Q
What dimensional range is available for Grade 7 Seamless Titanium Tubes?
Standard dimensions cover an outer diameter (OD) from Φ6 mm to Φ120 mm, a wall thickness (WTH) from 0.1 mm to 20 mm, with custom lengths available. Additional custom sizes beyond these ranges can also be manufactured upon request to meet specific project requirements.
Q
Which international standards do your Grade 7 Seamless Titanium Tubes comply with?
Our Gr7 seamless titanium tubes comply with a wide range of international standards, including ASTM B338, ASTM B861, ASTM B862 (USA), GB/T3624 and GB/T3625 (China), ΓOCT21945, ΓOCT22897, ΓOCT24890 (Russia), JIS H4631 (Japan), and DIN17861 and DIN17866 (Germany), ensuring global suitability for engineering projects.
Q
What are the main application areas for Grade 7 Seamless Titanium Tubes?
Grade 7 seamless titanium tubes are widely used in industries where corrosion resistance is critical, including the chemical processing industry, marine engineering, heat exchangers, firewater systems, ballast water systems, oil and gas pipelines, seawater desalination plants, and power generation stations.
Q
Why is Grade 7 Titanium preferred for seawater and marine environments?
The palladium content in Gr7 titanium dramatically enhances its resistance to crevice corrosion and pitting in chloride-rich environments such as seawater. Unlike standard stainless steel, Gr7 titanium does not suffer from stress corrosion cracking in marine conditions, making it a long-lasting and cost-effective material choice for offshore and coastal infrastructure.
Q
Can Grade 7 Seamless Titanium Tubes be customized for specific project requirements?
Yes. In addition to the standard dimensional range, custom OD, wall thickness, and length configurations are available. Surface finishes, special tolerances, and third-party inspection or certification services can also be arranged to meet the specific demands of your engineering or industrial project.