Who are we?
Specialists in industrial base metals, we have established a know-how of metals from collection to manufacture and processing, and are expanding a wide variety of business.


Head Office / Factory
12-2 Nagonoe, Imizu-city,
Toyama 934-8501
Tel: +81-(0)766-84-0001
Fax: +81-(0)766-84-2000

Tokyo Branch
1-15-15 Uchikanda, Chiyoda-ku Tokyo 101-0047
Tel: +81-(0)3-3292-0511
Fax: +81-(0)3-3295-6777

Nonferrous Sales Department Niigata Business Section
1-542, Shimokido,
Niigata 950-0885
Tel: +81-(0)25-273-0001
Fax: +81-(0)25-273-0119


TOP > Kurotani’s Business > Ingot Manufacturing

Ingot Manufacturing

We have an overwhelming market share in the supply of brass ingots for marine propellers, which proves the superiority of high technology.

We collect copper scraps and copper alloy scraps from all over Japan and the world. After the sorting, compounding and melting processes, these scraps are recycled into copper alloy ingots which meet each customers’ requirements of shape, size and quality.
Our products satisfy a wide range of industrial needs such as marine propellers, plumbing hardware, valves and industrial machinery parts. For good example, we have the world's leading market share for “Aluminum bronze” which is used as a raw material of marine propellers. That is, our products are sailing the seven seas every day with most of luxury liners in the world such as "Asuka" and "Crystal Harmony".
Our products are invisible but always being with you in your everyday life. Our technology is being utilized in some of your belongings that are familiar to you.

The manufacturing of High-value products is strongly supported by sophisticated analysis techniques and systems

インゴット製造Continuing to meet the diverse and ever growing needs of our customers, our most important mission is to provide a stable supply of high quality products at reasonable prices.
Essential to this mission are advanced technology, persistent research and development, and the analytical techniques that support this research and development. At Kurotani Corporation, based on the ISO9000 series of international standard for quality system and our own high in-house standard, we pursue high quality that reflects our customer satisfaction with accurate analysis.
Through developments such as the introduction of state-of-the-art analytical equipment and facilities, and the establishment of a quality control system, we continue to strive for improvements in productivity and quality.

Ingot ManufacturingIngot ManufacturingIngot Manufacturing


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