| ANS Steel Tubes Limited. |
Manufacturing and sales of electric resistance welded (ERW) pipes for automobiles and motorcycles |
India |
| Arkansas Steel Associates, LLC |
Steel mini mill (Manufacturing of railroad tie plates) |
U.S.A. |
| Calamba Steel Center Inc. |
Steel service center (processing and sales) |
Philippines |
| CS Metal Co., Ltd. |
Steel service center (processing and sales) |
Thailand |
| Gerdau Summit Acos Fundidos e Forjados S.A. |
Manufacture and sales of forging and casting products for industries |
Brazil |
| Hanoi Steel Center Co., Ltd. |
Steel service center (processing and sales) |
Vietnam |
| Kimura Foundry Amercia, Inc. |
Manufacture of prototype casting using 3D printing technology |
U.S.A. |
| Mactan Steel Center Inc. |
Steel service center (processing and sales) |
Philippines |
| Mason Metal Industry Co., Ltd. |
Steel service center (processing and sales) |
Taiwan |
| Mukand Sumi Metal Processing Limited |
Manufacturing and sale of secondary processed specialty steel and stainless steel products |
India |
| Mukand Sumi Special Steel Limited |
Manufacturing and sale of specialty rolled steel |
India |
| Nippon Steel Pipe America, Inc. |
Manufacturing and sale of welded steel pipes for automobiles |
U.S.A. |
| PT. Super Steel Karawang |
Steel service center (processing and sales) |
Indonesia |
| S & L Consulting SA |
Consulting and Engineering for OCTG |
Switzerland |
| Saigon Steel Service & Processing Co., Ltd. |
Steel service center (processing and sales) |
Vietnam |
| S and L Consulting USA, Inc. |
Consulting and Engineering for OCTG |
U.S.A. |
| SC Metal Pty Ltd |
Investment in aluminum smelting operation in Australia |
Australia |
| Servilamina Summit Mexicana S.A. de C.V. |
Steel service center (Steel process and sales) |
Mexico |
| Steel Center Europe, S.R.O. |
Shearing, slitting, and sale of steel sheets |
Czech |
| Steel Centre (M) Sdn. Bhd. |
Steel service centre (processing and sales), production and sales of steel products of construction |
Malaysia |
| Steelsummit Holdings, Inc. |
Steel Service Center & Import of Flat Rolled Steel |
U.S.A. |
| Steelsummit International Trading (Canada) Inc. |
Steel Trading |
Canada |
| Strohm Holding B.V. |
Manufacture and sale of Thermoplastic Composite Pipes (TCP) |
Netherlands |
| Sumiputeh Steel Centre Sdn. Bhd. |
Steel service center (processing and sales) |
Malaysia |
| Sumisho Metal (Thailand) Co., Ltd. |
Steel service center (processing and sales) |
Thailand |
| Thai Special Wire |
Manufacture and sales of PC steel wires and spring wires |
Thailand |
| Thai Steel Pipe Industry Co., Ltd. |
Manufacture and sales of welded steel tubes |
Thailand |
| Vietnam Nippon Steel Pipe Company Limited |
Manufacture and sales of mechanical steel tubes mainly for motorcycles |
Vietnam |
| 住商鋼鐵製品（香港）有限公司 |
Shearing, slitting, and sale of steel sheets |
China |
| 上海頂鋒金属製品有限公司 |
Shearing, slitting, and sale of steel sheets |
China |
| 中山市野村鋼材製品有限公司 |
Steel service center (processing and sales) |
China |
| 天津華住金属制品有限公司 |
Shearing, slitting, and sale of steel sheets |
China |
| 無錫頂鋒日嘉金属制品有限公司 |
Manufacture, processing and sales of tool steel and semi-finished molds |
China |
| 鈴木住電鋼綫制品（廣州）有限公司 |
Manufacture and sales of stainless steel wires |
China |
| 佛山頂鋒日嘉模具有限公司 |
Stock, sale, and processing of tool steel |
China |
| 广州日鉄鋼管有限公司 |
Manufacture and sales of tubular products for automobiles, construction equipment and motorcycles |
China |
