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High Precision E355+N Seamless Steel Tubes | EN 10305-1
  • High Precision E355+N Seamless Steel Tubes | EN 10305-1
  • High Precision E355+N Seamless Steel Tubes | EN 10305-1
  • High Precision E355+N Seamless Steel Tubes | EN 10305-1
  • High Precision E355+N Seamless Steel Tubes | EN 10305-1
High Precision E355+N Seamless Steel Tubes | EN 10305-1

High Precision E355+N Seamless Steel Tubes | EN 10305-1

Herkunftsort China
Markenname JOYRUNS
Zertifizierung ISO9001
Modellnummer 6 mm bis 140 mm
Produkt-Details
Lieferzustand:
+N, +NBK+,C+,BKS+,GBK
Wandstärke:
0.1mm-25mm
Anwendung:
Präzisionsanwendungen
Toleranz:
±0,01 mm bis ±0,05 mm
Material:
Kohlenstoffstahl / Legierstahl
Herstellungsprozess:
Kaltwalzen / Kaltziehen
Außendurchmesserbereich:
6 mm bis 140 mm
Schlüsselwörter:
Nahtloses Präzisionsrohr aus Stahl, Automobilrohr
Standard:
mit einer Breite von nicht mehr als 15 mm
Stahlsorte:
E235, E355, ST37.0, ST44.0, ST52.0
Produkt-Beschreibung

High Precision E355+N Seamless Steel Tubes | EN 10305-1 Compliant

 
Delivering uncompromising precision, mechanical performance and reliability for critical automotive, hydraulic and precision engineering applications. Our EN 10305-1 standard E355+N seamless tubes, available in outer diameters from 3mm to 120mm, are engineered to meet the most stringent requirements of global manufacturers.
 
Core Product Specifications
Parameter Specification Details
Compliance Standard Fully aligned with EN 10305-1 European standard for precision seamless steel tubes for mechanical and general engineering purposes
Material Grade E355+N (Normalized carbon steel, optimized for uniform metallographic structure and consistent mechanical properties)
Outer Diameter Range 3 mm to 120 mm
Wall Thickness Fully customizable to match your application requirements
Tolerance Control Strict adherence to EN 10305-1 precision tolerance classes, with minimal eccentricity and dimensional deviation
Delivery Condition Normalized (+N), with full batch traceability and complete material test reports (MTR)

 

Guaranteed Chemical Composition (Melting Analysis)

 
Fully compliant with the requirements of EN 10305-1 for E355 grade steel, with strict batch-to-batch consistency verified by spectrometric analysis. All values are expressed in mass percentage (%).
Element Guaranteed Limit
Carbon (C) ≤ 0.22
Silicon (Si) ≤ 0.55
Manganese (Mn) 0.40 – 1.60
Phosphorus (P) ≤ 0.030 (max residual)
Sulfur (S) ≤ 0.025 (max residual)
Chromium (Cr) ≤ 0.30 (residual)
Nickel (Ni) ≤ 0.30 (residual)
Molybdenum (Mo) ≤ 0.10 (residual)
Copper (Cu) ≤ 0.30 (residual)
Total Residual Elements (Cr+Ni+Mo+Cu) ≤ 0.70

 

Guaranteed Mechanical Properties (As-Delivered Normalized (+N) Condition)

 
All mechanical properties are tested and verified in accordance with EN 10305-1 standards, at room temperature, covering the full dimensional range of our tubes.
Property Test Standard Guaranteed Requirement Typical Production Range
Upper Yield Strength (ReH) EN ISO 6892-1 ≥ 355 MPa 360 – 390 MPa
Tensile Strength (Rm) EN ISO 6892-1 490 – 630 MPa 510 – 580 MPa
Elongation After Fracture (A) EN ISO 6892-1 (L₀=5.65√S₀) ≥ 22 % 24 – 28 %
Charpy V-Notch Impact Energy (KV) EN ISO 148-1 (Longitudinal, Room Temperature) ≥ 27 J 30 – 45 J

 

Unmatched Features & Competitive Advantages

 
Our E355+N seamless steel tubes are purpose-built to solve core challenges in high-stakes industrial and automotive applications, delivering tangible benefits to your production and end products:
 

1. Full EN 10305-1 Compliance for Global Supply Chain Access

 
We strictly follow the full technical and quality requirements of the EN 10305-1 European standard, the global benchmark for precision steel tubes in automotive and hydraulic sectors. This compliance guarantees seamless acceptance in European, North American and global automotive supply chains, eliminating regulatory barriers and qualification risks for your components.
 

2. Superior E355+N Normalized Material for Exceptional Mechanical Performance

 
Delivered in a fully normalized (+N) condition, our E355+N tubes feature a refined, uniform metallographic structure that delivers guaranteed mechanical performance per the above specifications:
 
  • High tensile strength and stable yield strength for heavy-load and high-pressure working conditions
  • Outstanding impact toughness and fatigue resistance under dynamic load cycles, critical for long-service-life automotive and hydraulic components
  • Consistent mechanical properties across the full tube length and every production batch, minimizing performance variability in your manufacturing process
 

3. Ultra-High Dimensional Precision & Premium Surface Finish

 
Engineered for precision-critical applications, our tubes set the bar for dimensional accuracy:
 
  • Tight tolerance control on outer diameter, inner diameter and wall thickness, with extremely low eccentricity
  • Smooth, defect-free inner and outer surface finish, which reduces fluid flow resistance in oil and fuel lines, minimizes wear in bushing and sleeve applications, and eliminates costly secondary finishing operations
  • Excellent formability for bending, flaring, expanding and welding processes, without cracking or deformation, streamlining your component fabrication workflow
 

4. Excellent Pressure Resistance & Durability in Harsh Environments

 
Our tubes are designed to perform reliably in extreme working conditions:
 
  • Superior burst pressure and long-term hydrostatic stability, ideal for high-pressure hydraulic cylinder and fluid transmission systems
  • Consistent performance in fluctuating temperatures and dynamic load cycles, ensuring stable operation in automotive powertrain, brake and fuel system applications
  • Good machinability and compatibility with common surface treatment processes, for enhanced corrosion resistance in harsh service environments
 

5. Comprehensive Size Range & Customization Flexibility

 
With an outer diameter range spanning 3mm to 120mm, our product line covers the full spectrum of your application needs — from ultra-precision miniature automotive oil lines to heavy-duty hydraulic cylinder tubes. We offer full customization of wall thickness, tolerance classes, cut length and delivery conditions, to perfectly match your unique design and production requirements, enabling one-stop procurement and simplified supply chain management.
 

6. Rigorous Quality Control & Full Batch Traceability

 
Quality is embedded in every step of our production process:
 
  • Strict incoming inspection of raw materials, with verified chemical composition and mechanical properties
  • Real-time in-process monitoring of all production stages, to ensure 100% compliance with EN 10305-1 standards
  • Comprehensive final inspection, including dimensional verification, non-destructive testing (NDT), mechanical property testing and surface quality inspection
  • Complete traceability for every batch, with full material test reports provided, meeting the strictest quality management requirements of the automotive industry (aligned with IATF 16949 standards)
 
 

Typical Industry Applications

 
Our EN 10305-1 E355+N precision seamless tubes are the preferred choice for a wide range of high-demand applications, including:
 
  • Automotive Industry: Fuel injection lines, engine oil circuits, brake system components, power steering tubes, and structural bushing parts
  • Hydraulic & Pneumatic Systems: Precision hydraulic cylinder barrels, piston rods, fluid transmission pipes, and pneumatic actuator components
  • General Precision Engineering: Machinery sleeves and bushings, shaft components, fastener raw materials, and high-precision mechanical structural parts
  • Fluid Control Equipment: Valves, pumps, and instrumentation tubing for industrial fluid handling systems
 
 

Partner with Us for Your Precision Tube Needs

 
Whether you need standard off-the-shelf tubes or fully customized solutions for your critical applications, our team of technical and sales experts is ready to support you. We are committed to delivering high-quality, consistent products that optimize your production efficiency and enhance the performance of your end products.
 
Contact us today to request a quote, order samples, or discuss your specific project requirements.

Umbauten:

Polierstahlrohr,

Präzisionsstahlrohr,

Nahtloses galvanisiertes Stahlrohr

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