Grade 7 Titanium Tube Suppliers in China - Factory Direct for Acid & Chloride Resistance
Product Name |
Grade 7 Seamless Titanium Tube |
Grades |
Gr7 |
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. |
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What is Grade 7 Titanium (Gr7), and how does it differ from other titanium grades?
Grade 7 titanium is a commercially pure titanium alloy containing 0.12–0.25% palladium. The addition of palladium significantly enhances its corrosion resistance, especially in reducing acid environments, making it superior to Grade 1 and Grade 2 in demanding chemical and marine applications.
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What size range is available for Grade 7 Seamless Titanium Tubes?
The tubes are available with an outer diameter (OD) ranging from Φ6mm to Φ120mm, wall thickness (WTH) from 0.1mm to 20mm, and customizable lengths. Custom dimensions beyond the standard range can also be produced upon request.
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Which international standards do your Grade 7 Seamless Titanium Tubes comply with?
Our tubes comply with multiple international standards, including ASTM B338, ASTM B861, ASTM B862, GB/T3624, GB/T3625, Russian ΓOCT standards (21945-82, 22897-86, 24890-81), Japanese JIS H4631-2018, and German DIN17861 and DIN17866, ensuring broad global acceptance.
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What are the primary industries that use Grade 7 Seamless Titanium Tubes?
Grade 7 Seamless Titanium Tubes are widely used in the chemical industry, marine engineering, heat exchangers, firewater systems, ballast water systems, oil and gas industry, seawater desalination plants, and power stations — all environments that demand superior corrosion resistance and long-term reliability.
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Why is Grade 7 titanium preferred for seawater and marine applications?
The palladium content in Grade 7 titanium provides exceptional resistance to crevice corrosion and pitting in chloride-rich environments such as seawater. This makes it an ideal material for marine engineering components, desalination plants, and offshore structures where long service life is critical.
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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 are available to meet specific engineering or project requirements. Please contact us with your specifications for a tailored solution.