SHINAGAWA REFRA CO.,LTD.
5351・Prime Market・Glass & Ceramics Products
Business
Shinagawa Refractories Co., Ltd. (formerly Shinagawa Refractories) was founded in 1875 and marked its 150th anniversary in 2025 as a comprehensive manufacturer built on ceramics technology. The company operates under a four-sector structure led by its core Refractories segment (net sales of ¥110,803 million), followed by Insulation Materials (¥16,418 million), Advanced Equipment & Materials (¥4,098 million), and Engineering (¥45,856 million). Its major customers are in the domestic steel industry (net sales to JFE Steel of ¥53,059 million and to Kobe Steel of ¥14,200 million), and it forms a global group comprising 42 subsidiaries and 6 affiliated companies in Japan and overseas.
Business Model
The company combines product sales (Refractories, Insulation Materials, Fine Ceramics Products) with construction services (Furnace Construction, Industrial Kiln/Furnace Design & Construction) to provide steel and industrial furnace customers with an integrated offering from material supply through construction. The structure aims to maintain profitability through expanded sales of high value-added products (Mold Powder for Continuous Casting, functional Refractories, etc.) and price optimization, while pursuing scale expansion through M&A-driven expansion of its global network.
Company Strengths
In a short span, the company acquired stakes in overseas bases across Europe, South America, and North America in quick succession: full acquisition of Netherlands-based Gouda Refractories Group B.V. in October 2024 (goodwill of ¥19,838 million), a 60% stake in Brazil-based Reframax Engenharia S.A. in May 2025, and a 51% stake in US-based Dynamix Casting Fluxes, LLC in March 2026 (goodwill of ¥5,476 million). This has built a group structure comprising 42 subsidiaries and 6 affiliated companies.
The company has a structure capable of providing an integrated offering of refractories manufacturing and sales together with furnace construction and kiln/furnace engineering work, and maintains long-term business relationships with major steel customers, including ¥53,059 million with JFE Steel and ¥14,200 million with Kobe Steel. The Engineering order backlog has increased substantially to ¥43,254 million (up 1,181.5% year on year), providing high visibility into future revenue.
Building on Refractories and Fine Ceramics technologies accumulated over the company's 150-year history, R&D activities continue at two locations: the company's own Technical Research Institute and the Isolite Insulating Products technical research institute. In FY2026 (ending March 2026), R&D expenses amounted to ¥1,700 million (Refractories & Advanced Equipment & Materials: ¥1,338 million; Insulation Materials: ¥362 million), supporting customer-needs-driven product development and expansion into new fields.
ENVALITH's Perspective
Performance Trend
Revenue expanded on a five-consecutive-period growth trend, from ¥110,784 million in FY2022 (ended March 2022) to ¥177,738 million in FY2026 (ending March 2026) (FY2025 (ended March 2025) was temporarily flat, down 0.1% year on year). In FY2026 (ending March 2026), growth accelerated to 23.4% due to the contribution from the newly consolidated Gouda, Reframax, and Dynamix companies. Meanwhile, operating income increased only slightly to ¥13,609 million (up 2.5% year on year), and the operating margin declined to 7.7% (from 9.2% in the prior period). An increase in goodwill amortization (from ¥428 million to ¥1,393 million) and expansion of SG&A expenses (from ¥21,865 million to ¥29,380 million) are pressuring the margin. The large increase in net income (from ¥9,778 million to ¥26,071 million) was due to a one-off factor: a ¥37,245 million gain on sale of fixed assets. As an external environment factor, the decline in domestic crude steel production (down 3.2% year on year) is exerting downward pressure on refractories sales volume, and the company presents a conservative outlook for FY2027 (ending March 2027) of ¥189,000 million in revenue, ¥13,000 million in operating income, and ¥10,000 million in net income.
Growth Strategy
In the final year of the 6th Medium-Term Management Plan, the company is pursuing sustainable growth through M&A, global expansion, recovery in Advanced Equipment & Materials, and a DOE-based progressive dividend policy
Through the consolidation of Gouda (European refractories), Reframax (South American engineering), and Dynamix (North American mold powder), the company has built a global network covering four continents. Overseas sales in FY2026 (ending March 2026) expanded to ¥76,318 million (43% of total sales). Expansion of refractories and insulation materials sales in South America through Reframax is also being promoted.
From FY2026, in addition to the mold flux business, Liaoning Shinagawa Hefeng Metallurgical Materials Co., Ltd. will launch a functional refractories business for continuous casting. The aim is to expand business in the Chinese market and strengthen global sales of high value-added products.
Due to changes in the timing of investment related to logic semiconductors and foundries, as well as the impact of customer inventory adjustments, the segment recorded a loss of ¥115 million in FY2026 (ending March 2026). The policy is to bring the new plant into stable operation and reliably capture demand for semiconductor manufacturing equipment-related products as demand recovery is expected. Expansion into new fields such as aerospace and energy is also being promoted.
From FY2027 (ending March 2026), the dividend policy will change from a 40% payout ratio standard to a progressive dividend policy based on a DOE of 4% or more. The annual dividend forecast for FY2027 (ending March 2026) is ¥95 (up from ¥90 in the previous period), planning a dividend increase. The company aims to further promote management with an awareness of the cost of shareholders' equity and to realize stable and sustainable shareholder returns.
Due to land acquisition by the Western Australian state government, the Kwinana plant will be relocated to Orion Industrial Park. Compensation of approximately ¥3,897 million has been received, and a gain on sale of fixed assets of approximately ¥3,712 million is expected to be recorded in the first quarter of FY2027 (ending March 2026). The new plant is scheduled to commence operations around September 2028, with the current plant continuing operations during the relocation period.
Last updated: July 19, 2026

