PT Tri Sinar Purnama, established in 1983, is one of the leading manufacturers of malleable iron pipe fittings in Indonesia. Based in Semarang, the company specializes in the production and export of iron pipe fittings, serving markets in over 20 countries, including the USA, Europe, and Asia. The company is committed to providing high-quality products and adheres to international standards such as ISO and UL certifications.