China Grade 7 Seamless Titanium Tube Suppliers - High Corrosion Resistance Factory Products
Specifications
Product Name |
Grade 7 Seamless Titanium Tube |
Grades |
Gr7 Titanium Grade 7 |
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) Seamless Titanium Tube is a commercially pure titanium alloy containing a small addition of palladium (0.12–0.25%), which significantly enhances its corrosion resistance — especially in reducing acid environments. Compared to Grade 2 titanium, Gr7 offers superior performance in aggressive chemical and marine conditions while maintaining excellent weldability and formability.
Q
What size range is available for Grade 7 Seamless Titanium Tubes?
The standard size range covers an outer diameter (OD) from Φ6mm to Φ120mm, wall thickness (WTH) from 0.1mm to 20mm, with customizable lengths. Custom dimensions beyond these ranges are also available upon request to meet specific project requirements.
Q
Which international standards does the Grade 7 Seamless Titanium Tube comply with?
Our Grade 7 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), ΓOCT standards (Russia), JIS H4631 (Japan), and DIN17861 / DIN17866 (Germany), ensuring global compatibility and quality assurance.
Q
What are the main application areas for Grade 7 Seamless Titanium Tubes?
Grade 7 Seamless Titanium Tubes are widely used across demanding industries including chemical processing, marine engineering, heat exchangers, firewater systems, ballast water systems, oil and gas, seawater desalination plants, and power generation facilities — all environments where superior corrosion resistance and long service life are critical.
Q
Why is Grade 7 Titanium preferred for seawater and marine applications?
The palladium content in Grade 7 titanium dramatically improves resistance to crevice corrosion and pitting in chloride-rich seawater environments. This makes Gr7 tubes an ideal choice for seawater desalination plants, offshore platforms, ballast water treatment systems, and other marine infrastructure where standard materials would degrade rapidly.
Q
Can Grade 7 Seamless Titanium Tubes be customized for special project requirements?
Yes. In addition to the standard dimensional range, custom sizes, lengths, and surface finishes can be manufactured to meet specific engineering and project needs. We support OEM orders and can provide material certifications, mill test reports, and compliance documentation aligned with the required international standards.