Hajji Welding Supplies, based in Tunisia, Tunis, is a trusted manufacturer and supplier specializing in high-quality welding consumables. Renowned for their expertise in Duplex and Super Duplex Steel Flux Core Wire, they cater to demanding industries such as oil and gas, petrochemical, and marine applications. Committed to excellence, Hajji ensures that each product meets stringent international standards, providing superior corrosion resistance, strength, and durability. With a strong focus on customer satisfaction, innovation, and technical support, Hajji Welding Supplies has established itself as a reliable partner for businesses seeking premium welding solutions in Tunis and beyond.
Duplex and Super Duplex Steel Flux Core Wires are engineered for superior strength and corrosion resistance. Composition typically includes 22–25% chromium, 3–5% nickel, 0.3–0.7% molybdenum, with additions of nitrogen and manganese to enhance toughness and duplex microstructure. Mechanical properties feature high yield strength (≥450 MPa for Duplex, ≥550 MPa for Super Duplex) and tensile strength (≈620–750 MPa), combined with excellent elongation (25–30%) and impact toughness. These wires offer exceptional resistance to pitting, crevice, and stress corrosion cracking, making them ideal for demanding environments such as oil, gas, chemical, and marine industries.
Hajji Welding Supplies Tunis
| Classification | Duplex/Super Duplex Steel Flux Core |
| Form | Welding Flux Core Wire |
| Type Of Welding | Gas Shielded |
| Diameters | .045”, 1/16” |
| Shielding Gas | 100% CO2, 75-80% Ar/ balance CO2, 35-50 cfh |
| Welding Positions | All positions |
| Duplex/Super Duplex Steel Flux Core Application & uses |
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At Hajji Welding Supplies, we take pride in being one of Tunis’s trusted suppliers of high-quality welding consumables. Our expertise lies in Duplex & Super Duplex Steel Flux Core Wire, engineered for precision, durability, and resistance to corrosion. With a strong commitment to quality and customer satisfaction, we provide welding solutions that support industries across construction, energy, shipbuilding, and manufacturing.
Duplex and Super Duplex Steel Flux Core Wires are widely used in industries requiring high strength and corrosion resistance. They are ideal for welding components in oil and gas pipelines, offshore platforms, chemical processing plants, and desalination equipment. Their exceptional resistance to pitting, crevice, and stress corrosion cracking makes them suitable for marine structures, pressure vessels, and heat exchangers exposed to harsh chloride environments. Additionally, they are employed in petrochemical, power generation, and wastewater treatment applications, where durability under extreme conditions is critical. These wires ensure long-lasting, reliable welds in demanding, corrosive, and high-temperature environments.
The Hajji Industries Server is built to deliver reliability, speed, and scalability for mission-critical operations. Designed for modern industrial environments, it ensures seamless performance in manufacturing, engineering, energy, and automation sectors.