EN 10305-3 specifies technical delivery conditions for welded cold sized steel tubes used for precision applications. The tubes are characterized by closely controlled dimensional tolerances and specified surface quality. The standard covers circular tubes and, in its newer edition, also square and rectangular sections for precision applications. Ladhani Metal Corporation is a manufacturer, supplier, and exporter of EN 10305-3 Welded Cold Sized Steel Tubes, available in different grades, sizes, wall thicknesses, lengths, and delivery conditions. Tubes can be supplied with mill test certificates and strict quality inspection as per international standards. Forms of Supply • Welded Cold Sized Tubes | Precision Steel Tubes | Cold Sized Tubes | ERW Precision Tubes | Mechanical Tubes | Automotive Tubes | Hydraulic Tubes | Pneumatic Tubes | Round Tubes | Square Tubes | Rectangular Tubes | Cut-to-Length Tubes Available Grades E155 | E190 | E195 | E220 | E235 | E260 | E275 Steel Types • Low-Strength Precision Steel | E155 | E190 | E195 | E220 • Medium-Strength Precision Steel | E235 | E260 | E275 Chemical Composition – Example Grade E355 • Carbon (C): Max. 0.22% • Silicon (Si): Max. 0.55% • Manganese (Mn): Max. 1.60% • Phosphorus (P): Max. 0.025% • Sulfur (S): Max. 0.025% • Aluminium (Al): Min. 0.020% These are the cast-analysis limits listed for E355 in EN 10305-3. Mechanical Properties • E155: Tensile strength 270–410 MPa | Minimum yield strength 155 MPa | Minimum elongation 28% • E195: Tensile strength 300–440 MPa | Minimum yield strength 195 MPa | Minimum elongation 28% • E235: Tensile strength 340–480 MPa | Minimum yield strength 235 MPa | Minimum elongation 25% • E275: Tensile strength 410–550 MPa | Minimum yield strength 275 MPa | Minimum elongation 22% The listed mechanical values apply to the specified delivery condition and can vary with grade, tube dimensions, and delivery condition. Delivery Conditions • +CR1 – Cold Rolled / Cold Sized Condition • +A – Annealed Condition • +N – Normalized Condition The mechanical properties are specified according to the applicable delivery condition. Key Features • Welded construction • Cold sized finish • Excellent dimensional accuracy • Closely controlled tolerances • Controlled surface roughness • Good surface finish • Consistent wall thickness • Good concentricity • Reliable mechanical properties • Suitable for precision machining • Available in different steel grades • Suitable for automotive and engineering components Material Characteristics EN 10305-3 tubes combine welded tube production with cold sizing to achieve precise dimensions and controlled surface quality. Cold sizing improves dimensional consistency and allows tubes to be supplied for applications where accurate outside dimensions, wall thickness, and surface condition are important. Applications • Automotive Components • Vehicle Components • Mechanical Engineering • General Engineering • Furniture Components • Precision Machinery • Hydraulic Components • Pneumatic Components • Machine Parts • Precision Fabrication • Structural Machinery Components • Tubular Engineering Components The standard identifies vehicle, furniture, and general engineering among the typical application fields for these precision tubes. Conclusion EN 10305-3 Welded Cold Sized Steel Tubes provide precision-engineered solutions requiring accurate dimensions, controlled tolerances, and specified surface quality. The range includes conventional E-series precision steels along with higher-strength and advanced steel grades for demanding engineering requirements. To place an order or make an enquiry for EN 10305-3 Welded Cold Sized Steel Tubes, contact Ladhani Metal Corporation for your required grade, size, wall thickness, length, and delivery condition. #EN10305.3 #EN10305.3SteelTubes #EN10305.3Tubes #EN10305.3WeldedTubes #EN10305.3PrecisionTubes #EN10305.3SteelTubeSupplier #EN10305.3SteelTubeManufacturer #EN10305.3SteelTubeExporter #WeldedPrecisionTubes #PrecisionSteelTubes #ColdSizedSteelTubes #ColdFinishedTubes #WeldedSteelTubes #MechanicalTubes #EngineeringSteelTubes #CarbonSteelTubes #PrecisionTubes #AutomotiveSteelTubes #HydraulicTubes #PneumaticTubes #MachineTubes #IndustrialSteelTubes #SteelTubeSupplier #SteelTubeManufacturer #SteelTubeExporter #PrecisionTubeSupplier #EuropeanSteelStandard #ENSteelStandard #Mumbai #Delhi #Chennai #Kolkata #Bengaluru #Hyderabad #Ahmedabad #Pune #Surat #Jaipur #Lucknow #Kanpur #Nagpur #Indore #Srinagar #Aurangabad #Dhanbad #Amritsar #NaviMumbai #Allahabad