LSAW Welded Carbon Steel Pipes for Oil, Gas and Structural Projects
LSAW (Longitudinal Submerged Arc Welded) carbon steel pipes are widely used in large-diameter pipeline systems such as oil and gas transmission, offshore structures and industrial processing plants. Due to their excellent mechanical strength and reliable weld performance, LSAW pipes are ideal for high-pressure and heavy-duty engineering applications.
Shaanxi Gold-Stone I/E Co., Ltd. supplies high-quality LSAW welded steel pipes designed for global infrastructure, energy and industrial pipeline projects. Our pipes are manufactured according to international standards such as API 5L, ASTM A53 and ASTM A333, ensuring reliable performance and compliance with international engineering specifications.
With large diameter capabilities and strict quality control, our LSAW pipes are widely used in long-distance pipeline transportation and offshore structural applications.
LSAW Steel Pipe Specifications
| Product Type | Standard / Grade | Size Range |
|---|---|---|
| Carbon Steel Line Pipe | API 5L Gr.B, X42, X52, X60, X65, X70, X80, X90, X100 | 16″ – 64″ |
| Carbon Steel Process Pipe | ASTM A53 / ASTM A333 / ASTM A671 / ASTM A672 / ASTM A691 | 16″ – 64″ |
| Carbon Steel Structural Pipe | API 2W 50 Z35 S1,S2,S5,S7,S8,S9 / API 5L X52 / EN 10225 S355J2+N / S355G2+N | 16″ – 64″ |
Key Features of LSAW Pipes
• Large diameter production capability (up to 64 inches)
• High structural strength for heavy engineering projects
• Excellent weld integrity using submerged arc welding technology
• Suitable for high-pressure oil and gas pipeline systems
• Reliable mechanical performance for offshore and structural applications
LSAW pipes are particularly suitable for projects requiring large diameter pipelines and high strength steel grades.
Surface Treatment Options
To enhance durability and corrosion protection, LSAW pipes can be supplied with various coatings:
- Black painted coating
- Anti-rust oil coating
- Hot-dip galvanized coating
- Fusion Bonded Epoxy (FBE) coating
- 3PE / 3LPE external anti-corrosion coating
These protective layers help extend pipeline service life in harsh environments such as offshore platforms and buried transmission pipelines.
Applications of LSAW Steel Pipes
LSAW welded pipes are widely used in large-scale engineering projects including:
• Oil and gas transmission pipelines
• Petrochemical processing plants
• Offshore platform structures
• Structural steel frameworks
• Water transportation pipelines
• Energy and power plant projects
Because of their large diameter capability and strong weld seam, LSAW pipes are one of the most widely used steel pipe types in long-distance pipeline systems.
About Shaanxi Gold-Stone I/E Co., Ltd.
Shaanxi Gold-Stone I/E Co., Ltd. is a professional supplier and exporter of steel pipes, pipeline fittings and industrial materials. We provide seamless pipes, ERW welded pipes and LSAW large-diameter pipes for global infrastructure, oil and gas and construction industries.
With strict quality inspection, reliable supply chain management and competitive export pricing, we help international clients complete pipeline and structural engineering projects efficiently.