DEEP RESEARCH · Dongbang Ship Machinery

Dongbang Ship Machinery: ship-equipment turnaround and environmental-equipment mix shift

A review of PIPE SPOOL stability and environmental-equipment growth

Published: 2025-12-25 · Company research · Original Naver Blog post

You are responsible for your own investment decisions. This material is research, not a recommendation to buy or sell.

0. Bottom line first

Dongbang is moving from a pipe supplier to a broader equipment company with environmental products.

Official fact: Cumulative Q3 2025 PIPE SPOOL sales were KRW 21.143 billion, 73.3% of sales, while environmental-equipment sales were KRW 6.359 billion, 22.0%. Environmental equipment rose 6.4 percentage points from 15.6% in 2024.

Interpretation: A rising finished-equipment mix is the key to margin improvement.

PIPE

73.3%

Stable cash generator

Environmental

22.0%

Higher-margin growth pillar

Debt ratio

35.4%

Low financial burden

1. Ownership and business

Sejin Heavy value chainVertical integration structure

Sejin HeavyDeck house and LPG tanks

IlsungScrubbers and STP

DongbangPipe spools and environmental equipment

Joint purchasing and shared sales channels create synergy.

Ilsung owns 20.00%, and Sejin Heavy owns 7.79%. Founded in 1994 and listed on KOSDAQ in 2009, Dongbang supplies major yards including Hyundai Heavy, Samsung Heavy, and Hanwha Ocean.

2. Segment analysis

Segment	Number	Meaning
PIPE SPOOL	KRW 21.143bn	Benefits from piping outsourcing
Environmental equipment	KRW 6.359bn	STP/FWG mix improvement
Utilization	100,507 EA / 144,000 EA, about 70%	Stable production level

3. Financials and CAPEX

Liabilities were KRW 16.08482 billion and equity was KRW 45.47968 billion. Q3 2025 tangible-asset investment was KRW 164.76 million: buildings/structures KRW 71.48 million, machinery KRW 52.19 million, vehicles KRW 25.39 million, and other KRW 15.70 million.

4. Industry and risks

The shipbuilding supercycle and IMO regulation support demand for both pipe spools and STP/FWG. Risks are steel prices and shipbuilding dependence, buffered by group purchasing and escalation clauses.

Sources

원문: https://m.blog.naver.com/PostView.naver?blogId=star_of_self&logNo=224122538809
데일리인베스트: http://www.dailyinvest.kr/news/articleView.html?idxno=43015
네이버 리서치 PDF: https://ssl.pstatic.net/imgstock/upload/research/company/1648691299594.pdf
Uniasen: https://uniasen.com/ko/blog/%ED%8C%8C%EC%9D%B4%ED%94%84-%EC%8A%A4%ED%92%80%EC%9D%B4%EB%9E%80-%EB%AC%B4%EC%97%87%EC%9D%B8%EA%B0%80%EC%9A%94/
기후솔루션: https://forourclimate.org/ko/newsroom/1066
Stock research PDF: https://stock.pstatic.net/stock-research/company/74/20241004_company_736154000.pdf

Naver original