Core Compliance & Technical Scope of EN 10217-1

• EN 10217-1 specifically applies to non-alloy carbon steel welded tubes for pressure service under room temperature conditions, distinguishing itself from other EN 10217 series standards (high-temperature, low-temperature, fine-grain steel grades). Its core execution specifications are as follows:
  • Applicable Scenario: Pressure pipeline systems working at normal/room temperature, suitable for non-corrosive and weakly corrosive fluid transmission
  • Certified Welding Process: Longitudinal Submerged Arc Welding (LSAW) & Electric Resistance Welding (ERW); our products adopt premium LSAW welding process for higher structural safety
  • Certified Steel Grades: P195TR1, P235TR1, P265TR1, P195TR2, P235TR2, P265TR2 (standard non-alloy pressure steel grades for European engineering)
  • Mandatory Inspection Rules: Dimensional tolerance check, tensile test, flattening test, bending test, hydraulic pressure test, and non-destructive weld testing (NDT)
  • Market Validity: Fully recognized by EU member states, widely accepted for industrial plant piping, water supply systems, and general pressure equipment projects

Standard Physical & Mechanical Properties

• All our EN 10217-1 LSAW pipes strictly follow standard mechanical property indicators at room temperature, with stable and uniform performance, fully meeting EU pressure equipment safety requirements:
  • Mechanical Performance Parameters (Standard Compliance)
    • P195 Grade: Yield Strength ≥ 195MPa; Tensile Strength: 315–440MPa; Elongation ≥ 27% - Excellent ductility, suitable for low-pressure conventional fluid pipelines
    • P235 Grade: Yield Strength ≥ 235MPa; Tensile Strength: 360–500MPa; Elongation ≥ 26% - Balanced strength and toughness, the most widely used grade for European general industrial piping
    • P265 Grade: Yield Strength ≥ 265MPa; Tensile Strength: 410–570MPa; Elongation ≥ 24% - High structural strength, applicable for medium-pressure industrial pressure pipeline systems
  • Dimensional & Structural Performance
    • Size Range: Outer diameter 406mm–1500mm, wall thickness 6mm–60mm, supporting customized non-standard sizes
    • Dimensional Tolerance: Strictly compliant with EN 10217-1 tolerance requirements, precise roundness and straightness, uniform wall thickness, ensuring accurate on-site assembly
    • Weld Seam Performance: Full penetration double-sided submerged arc welding, dense weld structure, no porosity, cracks or inclusions, excellent air tightness and water tightness
    • Pressure Resistance: Pass standard hydraulic pressure test, stable bearing capacity for long-term room-temperature pressure operation

Product Core Advantages & Market Competitiveness

• Compared with conventional ERW pipes and SSAW spiral welded pipes compliant with the same standard, our EN 10217-1 LSAW pipes have prominent competitive advantages in European and global high-standard pressure piping markets:
  • Higher Welding Reliability: Different from ERW's local high-frequency welding, LSAW adopts full-length double-sided submerged arc full penetration welding. The weld seam has consistent mechanical properties with the pipe body, avoiding weld brittle fracture risks, fully meeting EN 10217-1's strict pressure safety standards.
  • Superior Structural Stability: Straight longitudinal weld with uniform stress distribution, no oblique stress concentration of SSAW spiral welds. Ultra-low residual stress after professional shaping treatment, no deformation or cracking during long-term pressure service.
  • Thick-Wall & Medium-Pressure Adaptability: Breaking the thin-wall limitation of ERW pipes, supporting ultra-thick wall production. It is the optimal choice for medium-pressure and large-diameter pipeline projects specified in EN 10217-1, filling the performance gap of ordinary welded pipes.
  • Full Standard Compliance & Easy Market Access: 100% compliant with EN 10217-1:2019 standard, with complete factory test reports, material certificates and NDT inspection documents, supporting EU local project bidding, customs clearance and engineering acceptance.
  • Strong Environmental Adaptability at Room Temperature: Stable ductility and toughness under normal temperature working conditions, good resistance to cyclic pressure impact, long service life, low maintenance cost for industrial and municipal pipeline systems.
  • High Construction Compatibility: Precise dimensional accuracy and smooth inner and outer pipe walls reduce fluid transmission resistance, lower pipeline operation energy consumption, and improve overall engineering efficiency.

Product Advantages (Core Market Competitiveness)

• Compared with SSAW spiral welded pipes and ERW resistance welded pipes, LSAW pipes have irreplaceable core advantages in high-end and high-demand engineering markets, which are the key reasons for their wide recognition in the global market:
  • Superior Weld Quality & Structural Integrity: Single straight longitudinal weld with full penetration double-sided welding. The weld seam is parallel to the pipe axis with uniform stress bearing, avoiding the oblique stress defect of SSAW spiral welds. The overall structural stability is stronger, with extremely low failure risk under extreme pressure and load.
  • Ultra-Thick Wall & High-Pressure Resistance: Made of integral thick steel plates, the maximum wall thickness can reach 60mm, breaking the thickness limit (≤25mm) of SSAW coil raw materials. It is the preferred pipe for ultra-high pressure long-distance transmission and heavy-load structural engineering.
  • Low Residual Stress & Strong Fatigue Resistance: Uniform welding heat input and professional post-weld shaping treatment make residual stress far lower than spiral welded pipes. It can resist long-term alternating pressure impact, with stable performance and longer service life in cyclic working conditions.
  • Excellent Low-Temperature & Harsh Environment Adaptability: High weld toughness and low-temperature impact resistance, suitable for cold regions, offshore platforms and high-sulfur corrosive environments, meeting the strict environmental adaptation requirements of international high-end projects.
  • High Dimensional Accuracy & Easy Construction: Precise pipe roundness, straightness and wall thickness size, good pipe fitting consistency, reducing on-site assembly difficulty and construction cost, improving engineering installation efficiency.
  • Wide Standard Coverage & High Versatility: Fully compliant with API, ISO, EN, AWWA and other global standards, covering oil & gas, municipal, marine, chemical and structural fields, meeting multi-scenario global engineering procurement needs.

Global Application Scenarios

• Relying on EN 10217-1 EU standard certification and stable performance, our LSAW pipes are widely exported to Europe, Southeast Asia, the Middle East and other regions, serving multiple core scenarios:
  • Industrial plant room-temperature pressure fluid transmission pipelines
  • Urban municipal water supply, drainage and pressurized water delivery systems
  • General petrochemical non-high-temperature medium transmission pipelines
  • Pressure matching pipelines for pressure vessels and supporting equipment
  • Large-diameter structural pressure-bearing pipelines for civil engineering

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