Carbon Steel Welded Pipe
Carbon Steel Welded Pipe
Carbon steel welded pipes are widely used in construction, oil & gas, water systems, and industrial applications due to their cost-effectiveness, strength, and ease of production. Carbon steel has good properties in hardness and strength, and it is less expensive than other steel. Carbon steel welded pipe, commonly identified as standard pipe
- Made by rolling and welding carbon steel coils/sheets into a cylindrical shape.
- Used in low/medium-pressure applications (not for high-pressure like seamless pipes).
Material Composition
Sulfur (S)
≤0.05%
(impurities).
Manganese (Mn)
0.3–1.0%
(improves toughness).
Silicon (Si)
≤0.4%
(deoxidizer).
Carbon (C)
0.1–0.3%
(controls strength)
Common Grades:
API 5L
Oil/gas pipelines, structural use.
ASTM A53
Plumbing, low-pressure systems.
ASTM A106
High-temperature service.
ASTM A252
Piling (foundation support).
Common Applications
- Oil & Gas: Pipelines (API 5L), casing (low-pressure wells).
- Construction: Scaffolding, structural supports (ASTM A53).
- Water Systems: Plumbing, drainage (ASTM A135).
- Piling: Foundation piles (ASTM A252).
Types of Welded Pipes :
- ERW Pipe:Thin-wall, precise dimensions (e.g., ASTM A53).
- LSAW Pipe: Longitudinal submerged arc welding (thick, large diameter).
- Spiral Welded: Helical weld for large-diameter pipes (water transmission).