ILJIN Steel: seamless pipes, precision-drawn tubes and specialty tubular products
Public official-source review (2026-10-11); works-specific approvals require re-verification
Last verified:
ILJIN Steel is a separate Korean tube producer with hot seamless and precision cold-drawn capabilities.
| At a glance | Detail |
|---|---|
| Country | South Korea |
| Producer | ILJIN Steel |
| Main focus | Seamless OCTG/line pipe, cold-drawn mechanical tubes, stainless tubes, precision shapes |
| Production identity | Seamless production begun in 2012, according to company; check exact works |
| Last verified | 2026-10-11 |
Identity and company background
Founded in 1982, ILJIN Steel expanded from precision tube and cold-drawing operations into integrated seamless pipe production in 2012. Publicly listed end uses include OCTG, power generation, line pipe, hydraulic cylinder/mechanical tubes, automotive and stainless-tube applications. Its line-pipe description gives NPS 1–6 in and cites API 5L, EN and DNV-related standards; product dimensions and certification status are not universal.
Products and manufacturing footprint
Primary portfolio: Seamless OCTG/line pipe, cold-drawn mechanical tubes, stainless tubes, precision shapes.
Manufacturer/site check: Seamless production begun in 2012, according to company; check exact works. A group marketing brochure may aggregate multiple sites, processes or affiliates; it is not a substitute for a works-specific production list.
Certifications and project approvals
Do not infer a current works-specific API, ISO, EN/CE, class-society or end-customer AVL approval from an historic brochure or another subsidiary's certificate. Request valid documents that identify the legal entity, physical works, specific product, grades, diameter/thickness range and expiration date. Where no such current scope was independently corroborated, this article makes no approval claim.
Procurement takeaway
ILJIN is especially relevant where seamless small-diameter line pipe, mechanical seamless tube and cold drawing are needed. Verify the distinction between hot-finished seamless and subsequent cold-drawn tubing; specify NDT, pressure tests, tolerances, condition of supply and MTC scope.
What to reverify before an RFQ or PO
- Exact legal manufacturer, works location and MTC issuer.
- Current parent/subsidiary relationship, particularly after restructuring.
- Product grade, dimensional standard, process route and size availability.
- Manufacturing-site certification, license number, approved thickness/size and validity dates.
- End-customer and EPC approved-vendor status for the specific project.
- Seller/trader versus producer; traceable heat and coil/plate origin.
References and verification sources
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ILJIN Steel: seamless pipes, precision-drawn tubes and specialty tubular products
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