Krakatau Steel

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PT Krakatau Steel (in Indonesian)
Krakatau Steel Company Limited (in English)
Government-owned corporation
Traded asIDXKRAS
IndustryThe Indonesia's leading integrated steel company
Founded31 August 1970
Area served
Key people
Mas Wigrantoro Roes Setiyadi, (CEO), Binsar Simanjuntak, (President Commissioner)
ProductsHot rolled coil
Cold rolled coil
Galvanized steel
Wire rod
Granulated slag
Power Plant
Industrial Estate
Water Supply
Production output
7.15 Million Tons (2018)
RevenueIncrease Rp 18.11 trillion (2016)
Decrease Rp 2.32 trillion (2016)
Decrease Rp 59.4 billion (2016)
Total assetsIncrease Rp 53.2 trillion (2016)
Total equityIncrease Rp 24.9 trillion (2016)
Number of employees
7,039 (2016)
SubsidiariesPT. KHI Pipe Industry
PT. Krakatau Wajatama
PT. Krakatau Engineering
PT. Pelat Timah Nusantara
PT. Krakatau Information Technology
PT. Krakatau Daya Listrik
PT. Krakatau Tirta Industri
PT. Krakatau Industrial Estate Cilegon
PT. Krakatau Bandar Samudra
PT. Krakatau Medika
PT Krakatau Industrial Estate Cilegon
PT Krakatau National Resources
PT Meratus Jaya Iron & Steel
WebsiteKrakatau Steel

PT Krakatau Steel (Persero) (English: Krakatau Steel Company Limited) is the largest steel maker in Indonesia, headquartered in Cilegon, Banten.[1] The factory location is set on a 700-acre in the western end of Banten and adjacent to the Sunda Strait, and where the Krakatoa volcano and island from which the company takes its name are located.

Production facilities[edit]

Krakatau Steel has 6 (six) production plants making the company as the only integrated steel plant in the country. These plants produce many kinds of downstream products from upstream raw materials.

Production processes of steel products in Krakatau Steel starts from Direct Reduction Plant. This plant processes iron ore pellets into irons using natural gas and water.

The irons are then fed into electric arc furnaces in Slab Steel Plant and Billet Steel Plant. In these furnaces, the irons are mixed with scrap, hot bricket iron, and other additional materials to produce two kinds of steels, namely slab steels and billet steels.

Slab steels are then reheated and rolled in Hot Strip Mill becoming hot rolled coils and plates. The outcomes of this mill are widely used for ship buildings, pipes, buildings, general structures, and other applications. Furthermore, hot rolled coils could be processed, re-rolled, and chemically treated in Cold Rolling Mill becoming cold rolled coils and sheets. The results are generally used to manufacture car bodies, cans, cooking wares, and other applications.

Billet steels are rolled in Wire Rod Mill to fabricate wire rods which are commonly used for piano wires, bolts and nuts, steel cords, springs, and other applications.[2]

Latest, PT Krakatau Nippon Steel Sumikin (KNSS) start operating its galvanized steel plant in Cilegon, Banten, in September 2017. KNSS, established in 2012, is a joint venture between NSSMC and state-owned steel maker PT Krakatau Steel to manufacture and market cold-rolled steel and hot-dipped galvanized steel products for Indonesia’s automotive industry.


In addition to its subsidiaries, Krakatau Steel also has several joint ventures or affiliations, such as:

1. PT Kerismas Witikco Makmur
2. PT Pelat Timah NusantaraTbk
3. PT Krakatau Blue Water
4. PT Krakatau DaeDong Machinery
5. PT Krakatau Argo Logistics
6. PT Krakatau Posco (Capacity: 3 million tons/year)
7. PT Krakatau Posco Chemtech Calcination
8. PT Indo Japan Steel Center (Capacity: 120,000 tons/year)
9. PT Krakatau Poschem DongSuh Chemical
10. PT Krakatau Semen Indonesia
11. PT Krakatau Wajatama Osaka Steel Marketing
12. PT Krakatau Osaka Steel (Capacity: 500,000 tons/year)
13. PT Krakatau Nippon Steel Sumikin (Capacity: 500,000 tons/year)
14. PT Wijaya Karya Krakatau Beton
15. PT Krakatau Samator
16. PT IndoJapan Steel Center


  1. ^ " Steel company profile". April 1, 2014.
  2. ^ "Welcome to Krakatau Steel". Retrieved 2012-05-22.