Longitudinally Welded Steel Pipe

Longitudinally Welded Steel Pipe is manufactured by forming steel plates or coils into a cylindrical shape and joining them with a longitudinal weld. Advanced forming and welding processes provide reliable weld integrity, dimensional accuracy and structural strength, making the pipe suitable for pressure-bearing and large-scale engineering applications. With flexible options for steel grade, diameter, wall thickness, length and corrosion protection, longitudinally welded steel pipe can be tailored to different pipeline and infrastructure requirements.

Key Advantages

• Reliable Longitudinal Weld — Controlled welding processes and NDT help ensure weld integrity.

• High Strength & Pressure Resistance — Suitable for pressure pipelines and demanding engineering conditions.

• Excellent Dimensional Accuracy — Controlled forming and welding provide stable pipe geometry.

• Large-Diameter Capability — Suitable for large-diameter water transmission and infrastructure pipelines.

• Flexible Specifications — Steel grade, diameter, wall thickness, length and coating can be customized.

• Comprehensive Corrosion Protection — FBE, 3PE/3LPE, epoxy and other coating systems are available.

• Full-Process Quality Control — Includes raw material inspection, welding inspection, NDT, hydrostatic testing, dimensional inspection and final inspection.

Applications

Water Transmission · Oil & Gas Pipelines · Municipal Water Supply · Industrial Process Piping · Power & Energy · Mining · Chemical Industry · Infrastructure Projects