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Jakarta Kyoei Steel Works Tbk

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Who is Jakarta Kyoei Steel Works Tbk?

Jakarta Kyoei Steel Works Tbk (JKS) is an Indonesian steel manufacturer that focuses on producing reinforcing bars and other steel products for construction and infrastructure projects.

  • Production of reinforcing steel bars and related construction steel products for domestic markets.
  • Supply of steel materials for infrastructure, commercial, and residential construction projects.
  • Operation of steel manufacturing and rolling mill facilities in Indonesia.
  • Distribution of steel products through industrial, construction, and dealer channels.
  • Engagement in quality control and standards compliance for construction-grade steel.
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More About

Jakarta Kyoei Steel Works Tbk (JKS) operates as a producer of construction-grade steel, with a primary focus on reinforcing bars used in concrete structures for buildings, bridges, and other civil works in Indonesia.

The company’s offerings fall into the construction materials and basic steel products category, with reinforcing bars and related long products serving contractors, developers, and infrastructure project owners that require materials compliant with Indonesian and international building standards.

Its manufacturing operations typically involve billet processing, reheating, and rolling mill lines that shape steel into deformed bars and other profiles, with processes aligned to metallurgical and mechanical property requirements such as yield strength, tensile strength, and ductility for reinforced concrete applications.

In enterprise and institutional environments, Jakarta Kyoei Steel Works Tbk products are used within structural designs that follow established engineering codes and standards for reinforced concrete, where steel reinforcement works in combination with concrete to handle tensile and shear loads.

From a technology and process standpoint, the company’s role aligns with the broader steel value chain that includes raw material sourcing, steelmaking, rolling, testing, and logistics, with emphasis on quality control procedures such as chemical composition analysis and mechanical testing to meet specification sheets for construction tenders.

Compared with other categories in the construction ecosystem, Jakarta Kyoei Steel Works Tbk is positioned in primary material supply rather than downstream construction services or engineering consulting, making its products part of the Bill of Materials (BOM) for Evolved Packet Core (EPC) firms, contractors, precast concrete manufacturers, and building system integrators.

For directory and taxonomy purposes, Jakarta Kyoei Steel Works Tbk is best classified under materials and construction materials, specifically steel reinforcing products for the construction and infrastructure sector, serving as a base input to structural, civil engineering, and property development projects.

Our description of Jakarta Kyoei Steel Works Tbk. Updated February 2026.

Market segments

  • Materials / Metals & Mining

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