Gr.7 Tubes Titanium Pd Alloy Tubing Acid Resistant Marine Heat Exchanger High

Product Specification

Gr.7 Tubes Titanium Pd Alloy Tubing Acid Resistant Marine Heat Exchanger High Durability

Product Description – Gr.7 Tubes Titanium Alloy Tubing

Gr.7 Tubes are palladium-stabilized titanium tubes designed for superior corrosion resistance in highly aggressive chemical and marine environments. Compared to commercially pure titanium grades, Gr.7 Tubes incorporate a small addition of palladium, significantly enhancing resistance to reducing acids such as hydrochloric and sulfuric acid, as well as crevice corrosion in chloride-rich conditions. This makes Gr.7 Tubes a preferred choice for applications where long-term durability, low maintenance, and consistent performance are critical.

These tubes maintain the inherent advantages of titanium, including high strength-to-weight ratio, excellent weldability, and outstanding resistance to seawater and oxidizing media. Gr.7 Tubes are widely utilized in heat exchangers, desalination systems, flue gas desulfurization units, and chemical processing lines. Their stability at elevated temperatures and resistance to localized corrosion ensure operational reliability in both continuous and cyclic service conditions.

From Southeast Asia’s marine infrastructure to Middle Eastern desalination plants and North American chemical facilities, Gr.7 Tubes deliver consistent performance across diverse industrial environments. Their adaptability to fabrication processes such as bending, welding, and forming further enhances their usability across complex engineering systems.

Gr.7 Tubes Specification Table – Dimensions & Standards

Gr.7 Tubes Chemical Composition (Titanium Grade 7)

Gr.7 Tubes Mechanical Properties

Gr.7 Tubes Physical Properties

Gr.7 Tubes Key Advantages – Titanium Pd Alloy Tubing Performance

• Enhanced corrosion resistance in reducing acid environments
• Excellent resistance to crevice and pitting corrosion
• Stable performance in chloride-rich and marine conditions
• High strength with low density for weight-sensitive systems
• Good weldability and fabrication flexibility
• Long service life with minimal degradation

Gr.7 Tubes Applications – Titanium Grade 7 Tubing Uses

Gr.7 Tubes in Chemical Processing

Used in reactors, piping, and heat exchangers handling acidic and corrosive media.

Gr.7 Tubes for Desalination Systems

Ideal for seawater handling, brine heaters, and evaporators due to chloride resistance.

Gr.7 Tubes in Marine Engineering

Applied in offshore platforms, ship components, and seawater cooling systems.

Gr.7 Tubes for Pollution Control Equipment

Widely used in flue gas desulfurization (FGD) units and scrubbers.

Gr.7 Tubes in Oil & Gas Systems

Suitable for sour service environments and corrosive fluid transport.

Gr.7 Tubes Frequently Asked Questions (FAQ)

Q1 What makes Gr.7 Tubes different from Gr.2 titanium tubes?

Gr.7 Tubes contain palladium, which significantly improves corrosion resistance in reducing acid environments compared to Gr.2.

Q2 Are Gr.7 Tubes suitable for seawater applications?

Yes, Gr.7 Tubes offer excellent resistance to seawater corrosion, including pitting and crevice corrosion.

Q3 Can Gr.7 Tubes be welded easily?

Gr.7 Tubes maintain good weldability similar to commercially pure titanium grades when proper shielding is applied.

Q4 What industries commonly use Gr.7 Tubes?

They are widely used in chemical processing, desalination, marine engineering, and pollution control systems.

Q5 Do Gr.7 Tubes perform well at high temperatures?

Yes, they retain mechanical integrity and corrosion resistance at moderately elevated temperatures.