High quality produced by the consistent control system cooperative of Nippon Steel & Sumitomo Metal Cooperation

  In cooperation with Nippon Steel & Sumitomo Metal Corporation, we Hamanaka Chain Mfg.Co., Ltd.
established a series of unique chain production system from its raw material to the final products with highly consistent quality.

Bar Rolling

Manufacturing Processes of Rolled Bar for Chain (Nippon Steel & Sumitomo Metal Corporation)

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Basic-Oxygen Furnace


Continuous Casting

Ultrasonic Flaw Detector

Magnaflux Flaw Detector



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