Heat treatment in South Korea
Preparing a part? Read the design rules and checklist for Heat treatment before you request quotes.
Hardening, annealing and tempering that change the strength and wear resistance of metal parts.
As of 2026-10-05, 16 heat treatment manufacturers in South Korea are listed here, compiled from open data and each company's own website. The most listings are in 안산시 (2), 부산 (1), 김해시 (1). 6% state that they take prototype or one-off orders. 6% mention ISO 9001.
| ORDER SIZE | QUOTE | FILES | CERTIFICATIONS | LINKS | STATUS | |||
|---|---|---|---|---|---|---|---|---|
| 동서열처리 Busan · South Korea | Strong match | ContactSource | 2026-10-04 | Claim › | ||||
| 세아베스틸 군산시 · South Korea · steel Serves: automotive, marine | Strong match | IATF 16949ISO 14001ISO 45001ISO 9001 | ContactSource | 2026-10-04 | Claim › | |||
| D-I Industrial Co., Ltd. Jinju · South Korea | Possible | Source | 2026-10-04 | Claim › | ||||
| JAB Co.,Ltd. Siheung · South Korea · steel | Possible | PortfolioContactSource | 2026-10-04 | Claim › | ||||
| 금성다이아몬드 논현고잔동 · South Korea · steel | Possible | Source | 2026-10-04 | Claim › | ||||
| 금오캐스트 달서구 · South Korea | Possible | Source | 2026-10-04 | Claim › | ||||
| 나우산업 김해시 · South Korea | Possible | Source | 2026-10-04 | Claim › | ||||
| 대동기어주식회사 사천시 · South Korea Serves: automotive | Possible | ContactSource | 2026-10-04 | Claim › | ||||
| 동양특수금속 평택시 · South Korea | Possible | Source | 2026-10-04 | Claim › | ||||
| 비아트론 권선구 · South Korea | Possible | Source | 2026-10-04 | Claim › | ||||
| 서한 ENP 경주시 · South Korea | Possible | ContactSource | 2026-10-04 | Claim › | ||||
| 승림카본금속 안산시 · South Korea Serves: aerospace, automotive, energy, medical | Possible | Source | 2026-10-04 | Claim › | ||||
| 신영유니크 아산시 · South Korea | Possible | Source | 2026-10-04 | Claim › | ||||
| 엔피씨 안산시 · South Korea | Possible | ContactSource | 2026-10-04 | Claim › | ||||
| 주식회사 인스톨컴퍼니 서구 · South Korea · stainless-steel, steel, titanium | Possible | Prototype | ContactSourceAgent-ready | 2026-10-04 | Claim › | |||
| 태웅 부산 · South Korea · steel | Possible | Source | 2026-10-04 | Claim › |
No manufacturers match these filters.
Frequently asked questions
How many heat treatment manufacturers are listed in South Korea?
16 as of 2026-10-05. The list is compiled automatically from open data and company websites and is refreshed regularly, so it is a starting point to verify with each manufacturer, not a complete register.
Which cities in South Korea have the most heat treatment manufacturers?
안산시 (2), 부산 (1), 김해시 (1), 권선구 (1), 달서구 (1), based on the addresses in the listings.
How do I choose a heat treatment manufacturer in South Korea?
Check which processes are offered (case hardening, vacuum hardening, annealing), maximum part size and weight, and whether hardness testing and certificates are included.
Can I order a prototype or a single part?
6% of the listed companies state prototype or one-off orders and 0% state small batches on their websites; 0% mention series production. Confirm minimum quantities with the manufacturer.
Which certifications do these manufacturers state?
IATF 16949 (6%), ISO 14001 (6%), ISO 45001 (6%) are the most common among the listed companies. Certifications are detected from website text and should be confirmed by certificate.
How do I get a quote?
Use the Studio or the quote request on this site to describe the part once; we introduce suitable manufacturers. You can also contact the listed companies directly through their websites.
Other processes in South Korea
Welding and fabrication (31), Injection molding (20), Casting and foundry (12), Forging (11), CNC machining (10), Die casting (6)
Capabilities are detected automatically from each company's own website and may be incomplete or out of date; confirm details with the manufacturer. Data as of 2026-10-05. How we compile this directory. Is your company listed incorrectly? Claim or remove a listing. Contains data from OpenStreetMap contributors (ODbL), Overture Maps Foundation (CDLA Permissive 2.0) and Wikidata (CC0), U.S. government open data from SAM.gov (public entity registrations), INEGI Mexico (Directorio Estadístico Nacional de Unidades Económicas, DENUE), plus information from the companies own websites.