Hebei Huayang Steel Pipe Co., Ltd is one of the leading manufacturers and suppliers of lsaw steel pipe pipe for water,oil & gas transmission dn100-d n450 in China. Please feel free to buy cheap lsaw steel pipe pipe for water,oil & gas transmission dn100-d n450 from our factory. All customized products are with high quality and low price.
Product Overview and Technical Specifications
| Item | Specification |
|---|---|
| Product Name | LSAW Steel Pipe for Water, Oil & Gas Transmission |
| Nominal Diameter | DN100 – DN450 |
| Manufacturing Process | LSAW (Longitudinal Submerged Arc Welding) |
| Steel Grade | API 5L Gr.B / X42 / L245 |
| Wall Thickness | 4.5 mm – 16 mm |
| Length | 6 m – 12 m |
Huayang supplies DN100–DN450 LSAW pipes designed for integrated water, oil, and gas transmission systems, ensuring stable mechanical strength and reliable weld performance.
Material Characteristics and Manufacturing Control
For multi-medium transmission pipelines, commonly applied grades such as API 5L Gr.B and L245 provide a minimum yield strength of 245 MPa and tensile strength between 415–655 MPa, depending on specification. Chemical composition is carefully controlled, with carbon generally ≤0.26% and low phosphorus and sulfur content to maintain weldability and fracture resistance. For higher pressure oil or gas lines, X42 with minimum yield strength of 290 MPa can be selected.
Huayang utilizes precision JCOE forming and double-sided submerged arc welding to ensure uniform wall thickness and accurate roundness across DN100–DN450 sizes. Each pipe undergoes ultrasonic weld seam inspection and hydrostatic testing to verify pressure-bearing capacity. Optional internal epoxy or external 3LPE coating systems are available to enhance corrosion resistance, ensuring long-term operational reliability in municipal water networks and energy transmission projects.
Our Certificate
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