Welding Engineers NZ Ltd is the Authorised Distributor of flux and metal cored welding wires produced by NIPPON STEEL WELDING & ENGINEERING., LTD. (NSWE), in New Zealand and Australia. NSWE is a subsidiary company of NIPPON STEEL CORPORATION (NSC), the largest steel manufacturer in Japan and one of the top three in the world.

Welding Engineers NZ Ltd is also the Authorised Distributor for Nippon Steel Corporation's Speciality Steels, including Advanced Coastal Weathering Steels NAW-TEN and CORSPACE, and High Performance Bridge Steels, SBHS Series.

 NSWE's welding materials are developed in concert with their steel products to meet the developing needs of their customers worldwide, this is a strong factor in the premium quality of the Nippon Steel welding consumables and also very important when matching filler metals to speciality steels with specific chemical compositions.

Unlike many wire manufacturers, NSWE have access to the very best base metal at a cost effective price, in this case the virgin 'A' grade steel produced by NIPPON STEEL.

NIPPON  wires are filled with flux longitudinally rather than vertically to ensure an even spread of flux ingredients, dried, sealed and double copper coated.

They have typically have a very low hydrogen content and are virtually impervious to moisture during shipping and storage, so minimal risk of cold cracking and perfect for use when low diffusible hydrogen is particularly important.

Superb Japanese engineering ensures the wires are perfectly round in cross-section so there is no spiralling or pig-tailing when run.

Perhaps best known of the NIPPON wires sold by Welding Engineers in New Zealand is the SF-1E, a seismic grade, seamless flux-cored wire with very low hydrogen content.

In Australia, where the use of mixed gases is more common, SF-1A is the equivalent. For shipbuiling and structures requiring impact testing at -40 deg., SF-3A is often the recommended fluxcored wire.

Latest technology is represented by SM-3A metal cored wire. For extremely efficient welding with maximum deposition and travel speed, minimal to nil spatter, low fumes AND the capability to be welded in all positions, this wire is outstanding. Productivity gains of 30%  are not only possible but can be achieved easily by all welders. Also ideal for robotic welding.

 NSWE (NSSW) flux cored welding wires in vertical up welding

NSWE (NSSW) metal cored wire in horizontal welding

Cold Cracking - Low Hydrogen

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  • Coastal Weathering Steel

    Nippon Steel has developed two types of corrosion-resistant, weathering steels which can be used in New Zealand in C4-C5 corrosion zones; NAW-TEN (Nickel added) and CORSPACE (Tin added).

  • Nippon SF-1

    AWS : A5.20 E71T-1C

    Nippon SF-1 is an all-positional, seamless flux cored wire with a high deposition rate, easy and clean to weld.

    Suitable for welding mild steel and 490MPa high tensile strength steel for machinery, non-seismic structures,

  • Nippon SF-1E

    AWS : A5.36 E71T1-C1A2-CS1     

    EN ISO : 17632-A: T42 2 Z P C 1 H5

    Nippon SF-1e is an all-positional, seamless, copper-coated flux cored welding wire manufactured in Japan by Nippon Steel Welding & Engineering Co. Ltd to

  • Nippon SF-309L

    AWS : A5.22 E309LT 0-1     

    SF-309LP is a seamless cored welding wire for welding of stainless steel and dissimilar metals manufactured by Nippon Steel Welding & Engineering Co. Ltd.

    Can be used with CO2 or mixed gas with more than

  • Nippon SF-309LP

    AWS : A5.22 E309LT 1-1     

    Nippon SF-309LP is an all-positional, seamless cored welding wire for welding of low -C 22%Cr 12Ni stainless steel and dissimilar metals.

    Only available in 1.2mm.

  • Nippon SF-3A

    AWS : A5.36 E71T1-M21A4-CS1  

    EN SO 17632-A: T 46 4 Z P M 1 H5

    Often referred to as Nippon SF-3A, this is a seamless, all-positional, rutile flux cored wire designed for welding of steel with impact requirements down to -40 °C such as

  • Nippon SF-3AM

    AWS : A5.36 E81T1-M21A8-Ni1-H4   

    EN ISO : 17632-A: T 46 4 Z P M 2 H5

    Nippon SF-3AM is a seamless, all-positional, rutile flux cored wire for welding low temperature steels in applications such as off-shore structures.


  • Nippon SF-50WN

    AWS: A5.36 E71T1-C1A0-G

    SF-50WN is an all-positional, seamless, copper-coated flux cored welding wire manufactured by Nippon Steel Welding & Engineering Co. Ltd specifically for use welding Nippon Steel Corporation's 3% Ni-Added Coastal Weathering Steel,

  • Nippon SM-3A Metal Cored

    AWS : A5.36 E71T15-M21A4-CS1

    EN ISO : 17632-A T42 4 Z M M 1 H5

    Nippon Steel's SM-3A is a copper coated, seamless, Seismic Grade 3 metal cored wire with exceptional arc stability and smooth running.

    Very low hydrogen

  • Nippon Steel Coastal Weathering Steels

    Weathering steels have been used for structural buildings and bridges since the 1960s and widely used for building bridges in the US, UK, Japan, and Europe, etc. Kiwirail built the first weathering steel bridge structure in NZ as four replacement rail under-bridges in

  • Nippon Steel Speciality Steels

    Nippon Steel Corporation is the third largest steel producer in the world. They invest heavily in R & D and have developed a number of speciality steels for specific needs.

    As Japan is very similar geographically and seismically to New Zealand, Nippon Steel speciality steels often

  • Steel for Bridge High Performance Structures (SBHS)

    SBHS (Steel for Bridge High Performance Structures) are high-performance, high-tensile strength steels developed to reduce the construction costs of steel bridges.