Raw Material Suppliers
| Material Grade | Raw Material Origin | Raw Materials Source |
|---|---|---|
| CARBON STEEL | Korea (POSCO, SeAh BESTEEL, HYUNDAI STEEL) |
   |
| ALLOY STEEL | KOREA (POSCO, KOREA IRON & STEEL, SeAh BESTEEL, HYUNDAI STEEL) |
 |
| JAPAN (JEF, HIROSHIMA METAL & MACHINERY CO., LTD) |
  |
|
| STAINLESS STEEL | KOREA (POSCO, DAEKYUNG CORP) |
 |
| EUROPE (SANDVIK, OUTO KUMPU,ARCELORMITTAL) |
   |
|
| DSS, SDSS | KOREA (POSCO) |
|
| EUROPE (SANDVIK, OUTO KUMPU, ARCELORMITTAL ) |
|
|
| HIGH ALLOY | EUROPE (SANDVIK, ARCELORMITTAL) |
|
| KOREA (HVM, KPCM) |
  |
Sub Vendor Lists
| ITEM | COMPANY | CATEGORY | REMARK |
|---|---|---|---|
| NDE Inspection | KNDE | Radiographic Testing, Ultrasonic Testing, Magnetic Particle Testing, Penetration Testing, etc |
ISO 9001 / ASME / KEPIC |
| Machine | SB ENG. | Machining Center CNC Machine CNC Milling Machine |
ISO 9001 / TS 16949 |
| Forging | TAEHEUNG Forging Co., Ltd | Press Ring Mill Machine |
ISO 9001 / ISO 14001 |
| Heat Treatment | TAEYEONG TOTAL HEAT TREATMENT DAE CHANG METAL HEAT TREATMENT |
Gas Carburizing Quenching & Tempering Annealing & Solution, etc. |
QS 9001 / ISO 9001 |
| Overaly | DAE DONG | Overlay Spectacle, etc. |
ISO 9001 |