Industry information
Characteristics and advantages of titanium alloy joints for flexible composite pipes!

1、 Material characteristic advantages

1. High specific strength and lightweight

Titanium alloy has a density of only 60% of steel, but its tensile strength can reach 800 MPa, significantly reducing structural loads while maintaining high strength, especially suitable for fields with strict weight reduction requirements such as aerospace and ships.

The elastic deformation capacity reaches 5%, which can withstand high pressure conditions (such as 10MPa) and also buffer mechanical vibrations through deformation.

2. Excellent corrosion resistance

After plasma surface treatment, it can adapt to extreme corrosive media environments with pH values of 2-12, and its resistance to pitting corrosion and stress corrosion in seawater and acid-base media far exceeds that of stainless steel.

The outer layer of the flexible titanium tube is covered with an anti-static polyethylene shield, which further resists ultraviolet radiation and chemical corrosion, extending its service life.

2、 Structural design and functional characteristics

1. Multi layer composite structure

The inner layer is a thermoplastic sealing tube, the middle layer is a titanium alloy reinforcement layer, and the outer layer is a wear-resistant polyethylene sheath. The layered design balances sealing, mechanical strength, and external protection.

The non bonded process enhances the bending resistance and, combined with the elastic deformation characteristics of titanium alloy, can absorb up to 80% of seismic kinetic energy, making it suitable for seismic connections in buildings.

2. Low temperature and high temperature adaptability

It maintains plasticity at ultra-low temperatures of -253 ℃ and is suitable for the transportation of low-temperature media such as liquefied natural gas (LNG).

Excellent high temperature resistance, with a working temperature range of up to 500 ℃, far exceeding aluminum alloy (200 ℃) and ordinary plastic pipes.

3、 Engineering application advantages

1. Sealing and safety

Titanium alloy joints adopt zero leakage sealing technology to replace traditional flange connections in chemical pipelines, reducing the risk of leakage.

Supporting non-metallic joint technology reduces the risk of electrochemical corrosion and avoids the high cost problem of traditional crimping joints that require the use of 825 nickel based alloys.

2. Convenience of construction and maintenance

Flexible titanium pipes can be coiled and laid, supporting long-distance installation without joints, saving more than 30% of construction time.

Modular design facilitates the repair of old pipelines (such as corroded pipeline connections), reduces replacement costs, and minimizes environmental damage.

4、 Technological innovation and industry breakthroughs

1. Large caliber technological innovation: Chinese enterprises have achieved the coiling and manufacturing of DN250 flexible composite pipes, and improved their resistance to external pressure and negative pressure through titanium alloy reinforcement layers, promoting the demand for updating branch and main pipeline.

2. Nano coating research and development: The new generation of products introduces nano coating technology, which is expected to improve wear resistance by 300% and expand its application scenarios in extreme environments such as high temperature and high pressure.

3. Typical application scenarios: ship propulsion systems (resistant to high temperatures up to 200 ℃), shale gas transmission pipelines (corrosion-resistant), steel structure building expansion joints (seismic buffering), and hydrogen energy storage facilities (resistant to low temperatures).