ISO 9330-5:2000 specifies technical delivery conditions for submerged arc-welded (SAW) circular steel tubes made from unalloyed and alloyed steels with specified low-temperature properties. These tubes are intended for pressure purposes where the material is also used in low-temperature piping systems. ISO confirms ISO 9330-5:2000 as the current published edition; it was last reviewed and confirmed in 2012 and is currently under review. Ladhani Metal Corporation is a manufacturer, supplier, and exporter of ISO 9330-5 Welded Steel Tubes, supplied in required grades, outside diameters, wall thicknesses, lengths, and delivery conditions. Products can be supplied with mill test certificates and strict quality inspection as per international standards. Available Grades PL 21 | PL 23 | PL 25 | PL 26 | 11MnNi5-3 | 13MnNi6-3 | 12Ni14 | X12Ni5 | X10Ni9 Forms of Supply • Submerged Arc Welded Tubes | SAW Steel Tubes | Longitudinally Welded Tubes | Helically Welded Tubes | Pressure Tubes | Low-Temperature Tubes | Circular Steel Tubes | Hot-Finished Tubes | Cold-Finished Tubes | Cut-to-Length Tubes Steel Types • Unalloyed Low-Temperature Steel | PL 21 | PL 23 | PL 25 | PL 26 • Manganese-Nickel Alloy Steel | 11MnNi5-3 | 13MnNi6-3 • Nickel Alloy Steel | 12Ni14 | X12Ni5 | X10Ni9 Chemical Composition – Example Grade X10Ni9 • Carbon (C): Max. 0.13% • Silicon (Si): Max. 0.35% • Manganese (Mn): 0.30–0.80% • Phosphorus (P): Max. 0.025% • Sulfur (S): Max. 0.020% • Aluminium (Al): Min. 0.020% • Nickel (Ni): 8.50–9.50% • Molybdenum (Mo): Max. 0.10% • Vanadium (V): Max. 0.05% The standard specifies fully killed steels and controlled chemical composition for the listed grades. Mechanical Properties • PL 21: Tensile strength 360–480 MPa | Yield strength min. 215 MPa • PL 23: Tensile strength 410–530 MPa | Yield strength min. 235 MPa • PL 25: Tensile strength 360–490 MPa | Yield strength min. 255 MPa • PL 26: Tensile strength 480–580 MPa | Yield strength min. 265 MPa • 11MnNi5-3: Tensile strength 410–530 MPa | Yield strength min. 285 MPa • 13MnNi6-3: Tensile strength 490–610 MPa | Yield strength min. 355 MPa • 12Ni14: Tensile strength 440–590 MPa | Yield strength min. 245 MPa • X12Ni5: Tensile strength 510–710 MPa | Yield strength min. 390 MPa • X10Ni9: Tensile strength 690–840 MPa | Yield strength min. 510 MPa Low-Temperature Properties The grades are specified with Charpy V-notch impact requirements at low temperatures. X10Ni9, for example, is intended for particularly demanding low-temperature service, while the other grades have specified impact requirements according to grade and test temperature. Key Features • Submerged arc welded construction • Suitable for pressure applications • Excellent low-temperature toughness • Good weldability • High mechanical strength • Controlled chemical composition • Full-length heat treatment • Longitudinal or helical welding options • Hot-finished and cold-finished options • Suitable for low-temperature piping systems Material Characteristics ISO 9330-5 steels are designed to maintain suitable strength and toughness at low temperatures. Nickel and manganese-nickel alloy grades provide enhanced low-temperature performance, while the unalloyed grades offer economical solutions for applicable pressure and piping requirements. Applications • Low-Temperature Piping • Pressure Piping Systems • Oil and Gas Equipment • Petrochemical Plants • Chemical Processing • Refrigeration Systems • Cryogenic-Related Equipment • Storage and Process Facilities • Industrial Piping • Low-Temperature Pressure Equipment Conclusion ISO 9330-5 Welded Steel Tubes provide reliable solutions for pressure applications and low-temperature piping systems requiring submerged arc-welded construction, controlled mechanical properties, and specified impact toughness. The standard covers unalloyed and alloyed grades including PL 21, PL 23, PL 25, PL 26, 11MnNi5-3, 13MnNi6-3, 12Ni14, X12Ni5 and X10Ni9. To place an order or make an enquiry for ISO 9330-5 Welded Steel Tubes, contact Ladhani Metal Corporation for your required grade, outside diameter, wall thickness, length, delivery condition, and quantity. #ISO9330-5 #ISO9330 #ISO9330-5SteelTubes #ISO9330-5Steel #ISO9330-5Standard #WeldedSteelTubes #SteelTubes #WeldedSteelPipe #PressureSteelTubes #PressurePurposeSteel #CarbonSteelTubes #AlloySteelTubes #SteelTubeManufacturer #SteelTubeSupplier #SteelTubeExporter #WeldedTubeManufacturer #WeldedTubeSupplier #WeldedTubeExporter #IndustrialSteel #EngineeringSteel #SteelProducts #SteelStockist #SteelDistributor #SteelManufacturer #SteelSupplier #SteelExporter #IndustrialMaterials #InternationalSteelStandards #PressureVesselSteel #LadhaniMetalCorporation #Mumbai #Delhi #Chennai #Kolkata #Bengaluru #Hyderabad #Ahmedabad #Pune #Surat #Jaipur #Lucknow #Kanpur #Nagpur #Indore #Srinagar
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