API 5L LSAW Steel Pipe

Why Is ERW Pipe a Top Choice for Building and Construction?

Building and construction-from skyscrapers to bridges to stadiums-requires pipes that support structural loads, resist fire, and can be fabricated into complex shapes. Electric resistance welded steel pipe's strength-to-weight ratio and versatility make it indispensable, and Huayang's ERW pipe has been used in iconic projects like Beijing Daxing International Airport.

Structural supports are a key application. In high-rise buildings, ERW pipe is used for columns, beams, and trusses-its uniform strength ensures load distribution across the structure. For the Jakarta MRT (Mass Rapid Transit) Phase 3 project (2024), we supplied 12,000 tons of Φ219mm ERW pipe for station structural supports. Our Q345-grade ERW pipe has a yield strength of 345MPa, exceeding the project's 300MPa requirement. The contractor completed the steel structure installation 15 days early, thanks to the pipe's consistent dimensions (reducing on-site adjustments).

Bridges rely on ERW pipe's durability and corrosion resistance, especially in coastal areas. For a 2023 Vietnamese coastal bridge project (connecting Ho Chi Minh City to Vung Tau), we supplied 18,000 tons of hfw steel pipe for the bridge's pile foundations. The HFW pipe's narrow heat-affected zone (2-3mm) reduced corrosion risk, and its 3PE coating withstood the saltwater environment. The bridge's design life is 100 years, and our pipe's 50-year corrosion warranty aligned perfectly with this requirement.

Fire protection systems in buildings use ERW pipe for sprinkler lines and fire mains. These pipes need to withstand high pressure (1.2MPa) and remain intact during fires. Huayang's ERW pipe for fire protection is galvanized and undergoes hydrostatic testing at 1.5x the working pressure. In 2024, we supplied 5,000 tons to the Kuala Lumpur International Airport Terminal 3 project. The pipes met Malaysia's MS 1396 fire safety standard, and the airport's safety consultant noted: "Huayang's ERW pipe is more reliable than galvanized iron pipe-its welds don't leak under fire conditions."