1. Thames Tunnel Project in the UK: In the construction of the Thames Tunnel, a large number of SSAW Steel Pipes were used as the support structure and waterproof lining of the tunnel. The diameter of the steel pipe is 1200-1500 millimeters, the wall thickness is 16-20 millimeters, and the length is customized according to actual construction needs. These SSAW steel pipes need to withstand the pressure of soil and water around the tunnel, while also having good waterproof performance and corrosion resistance to ensure the safety and stability of the tunnel.

2. Houston Port Expansion Project: In 2018, the Houston Port was expanded and SSAW steel pipes were used for the pile foundation and shore protection structure of the dock. There are various specifications for steel pipes, including a diameter of 800 millimeters, a wall thickness of 12 millimeters, a diameter of 1000 millimeters, and a wall thickness of 14 millimeters, with lengths ranging from 20 to 30 meters. In the harsh environment of the port, SSAW steel pipes have undergone special anti-corrosion treatment, which can resist the corrosion of seawater and the erosion of waves, providing reliable foundation support for the expansion of the port.

3. Sydney Metro Project in Australia: SSAW steel pipes were used in the construction of the Sydney Metro for the ventilation system, water supply and drainage system, and some structural support parts of the subway tunnels. The diameter of the steel pipe is 600-1000 millimeters, and the wall thickness is 10-16 millimeters. These SSAW steel pipes need to have good compressive, deformation, and corrosion resistance in underground environments to ensure the normal operation and long-term use of the subway system.

4. Rio de Janeiro City Water Supply Project: In 2020, the city water supply project in Rio de Janeiro, Brazil used a large number of SSAW steel pipes with diameters ranging from 400-1200 millimeters and wall thicknesses of 8-18 millimeters. These steel pipes are used for the construction of urban water supply networks, transporting water sources to various areas of the city. In the water supply system, SSAW steel pipes need to have good corrosion resistance and hygiene performance to ensure the safety and stability of water quality.

5. Dubai Palm Island Infrastructure Project in the United Arab Emirates: SSAW steel pipes are widely used in the infrastructure construction of Dubai Palm Island's water supply and drainage system, sewage treatment system, and pipeline laying for some landscape projects. The specifications of steel pipes vary according to their different uses, with diameters ranging from 300 millimeters to 1500 millimeters and wall thicknesses of 6-20 millimeters. Under the dual influence of desert and marine environments, SSAW steel pipes undergo strict anti-corrosion treatment and can adapt to harsh conditions such as high temperature and high salinity, providing reliable support for the infrastructure of Palm Island.

6. Mecca Light Rail Transit Project in Saudi Arabia: SSAW steel pipes were used in the construction of the Mecca Light Rail Transit for railway communication, signal system pipeline laying, and some power transmission pipelines. The diameter of the steel pipe is 200-600 millimeters, and the wall thickness is 6-10 millimeters. These SSAW steel pipes need to have good compressive, impact, and corrosion resistance to meet the requirements of railway operating environments and ensure the safe and stable operation of the railway system.

7. Expansion Project of Mumbai International Airport in India: SSAW steel pipes are used for the foundation reinforcement of the airport runway, drainage system, and infrastructure construction of some terminal buildings in the expansion project of Mumbai International Airport. The diameter of the steel pipe is 800-1200 millimeters, and the wall thickness is 10-16 millimeters. In the complex environment of airports, SSAW steel pipes need to withstand the enormous pressure of aircraft takeoff and landing and the influence of various natural factors, thus requiring high strength, toughness, and corrosion resistance.

Here are some other famous SSAW steel pipe engineering cases from abroad:

UK North Sea oil and gas field development project: SSAW steel pipes are widely used in oil and gas pipeline systems during the development of North Sea oil and gas fields in the UK. There are various specifications for steel pipes, with diameters typically ranging from 600-1200 millimeters and wall thicknesses of 12-20 millimeters. The materials used are mostly high-grade steel that meets the API 5L standard. These SSAW steel pipes need to withstand the harsh marine environment of the North Sea, including corrosion from seawater, impact from waves, and changes in seabed geological conditions. By using special anti-corrosion coatings and reinforced pipeline designs, SSAW steel pipes can operate stably in such complex environments for a long time, ensuring the safe transportation of oil and gas from subsea wellheads to onshore processing facilities.

Expansion Project of Marseille Port in France: In 2023, Marseille Port in France will undergo an expansion project, using a large amount of SSAW steel pipes for the port's infrastructure construction. Among them, SSAW steel pipes with a diameter of 800 millimeters and a wall thickness of 14 millimeters are used in the pile foundation engineering of the dock, with a length between 20-30 meters. In the water supply and drainage system of the port, SSAW steel pipes with a diameter of 400-600 millimeters and a wall thickness of 8-10 millimeters are used. These steel pipes have undergone anti-corrosion treatment and are able to resist chemical corrosion in seawater and port environments, providing reliable support and guarantee for the long-term use of the port.

The Alaska crude oil pipeline project in the United States uses large-diameter SSAW steel pipes. The diameter of the steel pipe is generally 1016-1219 millimeters, with a wall thickness of 20-25 millimeters, and the material is a special steel grade suitable for low-temperature environments. Due to the cold climate in Alaska, there are extremely high requirements for the low-temperature toughness and frost resistance of pipelines. After rigorous low-temperature performance testing and special insulation treatment, SSAW steel pipes can safely transport crude oil under extremely cold conditions, ensuring the effective development and transportation of local crude oil resources.

The construction project of the Java Island Ring Road in Indonesia: SSAW steel pipes are used for the drainage system and bridge foundation engineering of the road in the construction of the Java Island Ring Road. In the drainage system, SSAW steel pipes with a diameter of 300-600 millimeters and a wall thickness of 6-8 millimeters are used to effectively drain rainwater from the road surface and prevent damage to the road caused by accumulated water. In bridge foundation engineering, SSAW steel pipes with a diameter of 800-1200 millimeters and a wall thickness of 10-16 millimeters are used as pile foundations to provide stable support for the bridge. These SSAW steel pipes have undergone anti-corrosion and anti-corrosion treatment in the local tropical climate and complex geological conditions, and can function stably for a long time.

Durban Port Container Terminal Expansion Project in South Africa: SSAW steel pipes were used to construct the support structure and wharf of the container terminal expansion project at Durban Port in South Africa. The diameter of the steel pipe is 1000-1500 millimeters, the wall thickness is 16-20 millimeters, and the length is customized according to actual engineering needs. These SSAW steel pipes need to withstand the enormous loads of container terminals and the erosion of waves and sea winds. By using high-strength steel and advanced anti-corrosion technology, SSAW steel pipes can meet the requirements of the port and provide reliable infrastructure support for port operations.

Madinat Al Arab project in Dubai, UAE: In 2012, the project used various specifications of SSAW steel pipes, such as 1232 × 16 × 12000mm, 1032 × 16 × 12000mm, 630 × 9 × 12000mm, etc. These steel pipes are used for infrastructure construction in the coastal area, including water supply and drainage systems, landscape engineering pipeline laying, etc. In the high temperature and high salinity marine environment of Dubai, the steel pipes have undergone special anti-corrosion treatment to resist corrosion, ensuring the smooth progress and long-term use of the project.

The Rotterdam Port Container Terminal Project in the Netherlands: In 2012, SSAW steel pipes with a diameter of 1500mm and a wall thickness of 18mm were selected as pile foundations for the construction of the Rotterdam Port container terminal. The material used was S355 steel, with a usage of over 2500 tons and a length between 25-35 meters. The dock area has a large load and is affected by seawater erosion. SSAW steel pipes, with their high strength and good corrosion resistance, provide stable support for the dock and ensure its normal operation.

The Hedland Port FMG project in Australia: In 2013, two specifications of LSAW (with circumferential welds) steel pipes, 1500 × 16 and 1800 × 16, were used in the dock construction of the Hedland Port FMG project in Australia, with lengths ranging from 18-25 meters. Although LSAW Steel Pipes are mainly mentioned here, SSAW steel pipes are also commonly used in pier pile foundations, revetment structures, and auxiliary systems such as water supply and drainage in similar port construction projects. SSAW steel pipes can be customized according to the specific needs of the project, and can adapt to different engineering environments and load requirements.

The Nacala Port Project in Mozambique: In 2013, a large number of SSAW steel pipes were used in the construction of the port, including 1200 × 12.5 steel pipes with lengths ranging from 29 to 46.5 meters, and 600 × 8 steel pipes with lengths ranging from 25 to 47 meters. The construction of ports needs to take into account factors such as corrosion of the marine environment, the impact of waves, and the load of ship docking. SSAW steel pipes have undergone anti-corrosion treatment and structural optimization, which can meet the long-term requirements of port use and provide reliable infrastructure support for cargo loading, unloading, and transportation in ports.

Chile GNL Quintero project: In 2013, the project used SSAW steel pipes made of ASTM A252 Grade 50 steel, with diameters between 32-48 inches, wall thicknesses between 15-24 millimeters, and lengths between 18-34 meters. The project has strict requirements for the quality and performance of steel pipes. SSAW steel pipes not only ensure strength and toughness, but also have good welding performance and corrosion resistance to meet the project's needs in energy transmission and other aspects.