SSAW (Spiral Submerged Arc Welded) Steel Pipe

The expansion of urban pipelines, transmission of energy and water resources, and construction of large-scale infrastructure require decades of stable operation, rather than temporary completion. Under harsh working conditions such as deep burial, high pressure, outdoor exposure and cross-regional laying, conventional steel pipes suffer from obvious drawbacks including easy corrosion, deformation, short service life and high maintenance costs, restricting the long-term operation of large pipe networks and infrastructure projects.

Our long-life SSAW (Spiral Submerged Arc Welded) Steel Pipe breaks the performance limitations of traditional pipes. With innovative spiral forming technology, full-range anti-corrosion treatment and balanced mechanical structure, it upgrades the material standards for large pipe networks and infrastructure construction. Committed to delivering long-term engineering solutions featuring anti-aging, heavy-load resistance, stable pressure resistance and low maintenance, it builds a century-old solid foundation for various large-scale infrastructure and long-distance pipe networks.

✅ Innovative Spiral Mechanical Structure, Higher Pressure Resistance & Longer Service Life

Different from the structural defects of longitudinal welded pipes, the multi-angle balanced forming design of SSAW spiral welds evenly disperses internal pipeline pressure, reducing stress by more than 30% compared with longitudinal pipes of the same wall thickness. It completely avoids cracking and leakage caused by local stress concentration. The weld strength is higher than or equal to the base material, fundamentally improving the pipe's deformation and impact resistance, adapting to medium and high-pressure long-distance transmission conditions and greatly extending the service life.

✅ Precision Manufacturing Technology, Adaptable to All Complex Working Conditions

Adopting automatic continuous spiral forming and double-sided submerged arc welding technology with full digital control, our pipes cover a complete specification range (DN200-DN4000 diameter, 5-35mm wall thickness) with a maximum single pipe length of 35 meters. The ultra-long pipe body minimizes on-site welding joints, effectively reducing leakage risks and construction errors, while shortening the construction period and cutting comprehensive project costs. Compatible with mainstream engineering steels such as Q235B, Q345B and Q355B, it performs stably in complex harsh environments including deep soft soil, outdoor exposure, saline-alkali wetlands and low-temperature cold regions.

✅ Custom Long-Term Anti-Corrosion Technology, Resist Decades of Erosion

Targeting the corrosion pain points of buried pipelines with long-term fluid transmission and alternating dry-wet conditions, we provide customized anti-corrosion solutions including 3PE, FBE, coal tar epoxy and cement mortar lining, complying strictly with SY/T 0447 and AWWA C200 standards. It effectively isolates corrosion caused by soil acid-base, water vapor oxidation and medium scouring, preventing rust, peeling and perforation. The technology realizes decades of stable operation with minimal maintenance and greatly reduces later maintenance and replacement costs.

✅ Strict Quality Inspection System, Full Safety Guarantee for Key Projects

All products comply with international authoritative standards API 5L and ASTM A252. Every pipe undergoes triple full inspections: Ultrasonic Testing (UT), Radiographic Testing (RT) and Hydrostatic Pressure Test, with no weld defects, pinholes or pressure weaknesses. We implement closed-loop quality control from raw material inspection, welding forming and anti-corrosion treatment to finished product delivery, ensuring full compliance with the high safety standards of national large-scale infrastructure and key pipeline projects.

Focusing on high-standard, long-cycle and large-volume engineering scenarios, it accurately meets diverse industry demands:

Energy Transmission Pipeline: Long-distance high-pressure oil and gas transmission pipelines, with stable pressure and anti-leakage performance for cross-regional long-line projects;

Water Conservancy Projects: Large-scale water diversion, irrigation and flood control pipe networks, anti-corrosion and anti-scouring for perennial water transmission;

Municipal Infrastructure: Urban water supply, drainage, gas and heating main pipelines, stabilizing urban lifeline operation;

Heavy Infrastructure: Pile foundation pipes for bridges, ports, offshore platforms and large buildings, with strong load-bearing capacity and stable structure;

Industrial Fluid System: Industrial cooling water, sewage and ventilation pipelines, adapting to long-term continuous operation.

Most conventional pipes only meet short-term delivery standards but ignore the full-cycle project costs. Our long-life SSAW steel pipes deliver core value of one-time high-standard investment and decades of stable operation. They reduce equipment downtime caused by failures, cut long-term maintenance costs, simplify construction procedures via ultra-long pipe design, and avoid rework losses due to unstable quality. It realizes four major advantages: project quality improvement, construction period acceleration, cost reduction and service life extension, serving as the optimal long-term material choice for large-scale infrastructure and long-distance pipe networks.

Stable Quality For Generations | Engineering Trusted Worldwide

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