Thai Special Wire Co.,Ltd Products : Piano Wire, Spring Wire

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Piano wires : Piano Wires is known as Music spring wire, a steel material for spring that using high quality/grade of high carbon steel wire rods which its manufactured with special heat treatment, cold drawing process, the process is similar as Hard Drawn Steel Wire but more politely and under strictly quality control from raw-material until finished product.

      TSW Piano Wires or Music spring wire is used for various application that not only for the spring of piano or guitar but also many kind of springs such as automobil, motorcycle and home appliances which needed high reliability, high durability, high ductility and stable strength.


Hard drawn steel wires : A steel wire material for springs which is made by high quality of high carbon steel wire rod and cold drawing process. The usage of hard drawn steel wires is for the spring of wide general purpose.


Oil Tempered Wires for Suspension Springs: A new TSW’s product that obtained the reliable technology transfer from parent company “NSSG” Japan, aiming to support the country and regional Automobile and Motorcycle industries. It’s started commercial manufacturing since 2016 which as the first facility investment in Thailand.


Low Carbon Steel wires: A group of TSW’s high quality, round cross section ordinary low carbon products for general purpose application which the good appearance is preferred also available.



Oil tempered wires is material for the spring which is given the continuous quench and temper heat-treatment. Its clean surface over length overall has been providing both of high speed coiling ability and good productivity for the sake of each customer.
Almost 60 years-long-experience and competitive dominance of Oil Tempered Wires production enable high quality with skillful technology.

Shaped wire is produced in a wider selection of shapes tailored to diverse needs. Their applications include oil gauges, window blinds and power spring for automotive seat belts.