The Siam Industrial Wire Company Limited (SIW) is a member of NatSteel Holdings and a wholly owned subsidiary of Tata Steel group. With an annual production of 200,000 tonnes, SIW is one of ASEAN's largest manufacturers of pre-stressed concrete steel products. It manufactures pre-stressed concrete strand, PE unbounded strand, pre-stressed concrete wire, cold drawn wire, hard drawn wire and welded wire mesh and distributes these quality products throughout Europe, Oceania, Middle East, America, Africa and Asia. The Siam Industrial Wire is one of the world’s leading steel wire makers. We are relentless in our pursuit for excellence in product quality and innovation. We take pride in being able to anticipate your needs and provide tailored solutions for each of your requirements. We strive to exceed expectations.