PT Steel Pipe Industry of Indonesia Tbk (ISSP) or Spindo, was founded in 1971 in Surabaya. The company manufactures a variety of steel pipes/tubes, such as structural pipes, water pipes, oil and gas pipes, stainless steel pipes, galvanic pipes, steel poles, and mechanical tubes, as well as other related products. It has approximately 1,000 workers in six modern factories, located in Surabaya, Pasuruan, Karawang, and Sidoarjo. The head office is located on Kalibutuh Street 189-191, Surabaya, East Java, with a representative office on Gedung Baja 7th floor, Pangeran Jayakarta Street 55, Jakarta.