| Symbol | Name | Country | Exchange |
|---|---|---|---|
| 005010 | Husteel | KR | KO |
| 008730 | Youlchon Chem | KR | KO |
| 058650 | Seah Holdings | KR | KO |
| TRG | Tubos Reunidos S.A | ES | MC |
| TUB | Tubacex S.A | ES | MC |
| 100090 | Samkang M&T Co.Ltd | KR | KQ |
| ALDEL | Delfingen | FR | PA |
| 002318 | Zhejiang JIULI Hi-tech Metals Co Ltd | CN | SHE |
| 601609 | Ningbo Jintian Copper Group Co Ltd | CN | SHG |
| 002478 | Jiangsu Changbao Steeltube Co Ltd | CN | SHE |
| ZWM | Zwahlen et Mayr SA | CH | SW |
| 2030 | Froch Enterprise Co Ltd | TW | TW |
| MCHIF | Maruichi Steel Tube Ltd | US | OTC |