株式会社ヤマヨ

World leading expertise in Straightening and Black Oxide Coating

Straightening

We are skillful at straightening titanium, duralumin, high alloy, and other difficult-to-handle materials. In general, curves after straightening are 3mm per 1 meter, whereas our straightening attains 0.5–0.05mm precision.

Black Oxide Coating

If you are looking for black oxide coating following international industrial standards, we are here to help you. We are capable of fully meeting the DIN, MIL, ISO11408, and NDS standards upon request. We will provide the best-quality coating and will not let you down for choosing us.

Black Oxide Coating

What’s New?

About Us

About Us

For 25 years since the launch, we strived to continue developing our straightening and black oxide coating expertise. Hence, our quality and precision has been highly appreciated by many of our clients. To respond to borderless manufacturing, we have reinforced the application to international industrial standards (such as DIN and MIL). We are also thorough in quality assurance, such as ISO9001, to meet our client’s stringent requirements. We promise to constantly improve our technology so that we can further increase our customer’s satisfaction.

MS JAB CM012
MS JAB CM012
SGS ISO 9001
SGS ISO 9001
SGS ISO 14001
SGS ISO 14001
Yokohama Chizai Mirai Enterprise
Yokohama City CerGfied,
Enterprise in excellence
Yokohama Chiiki Koken Enterprise
Yokohama IDEC CerGfied,
Enterprise in excellence

Yokohama Factory
278-1 Orimoto Yokohama  
Kanagawa 224-0043 Japan
TEL : 045-471-3303  / 
FAX : 045-471-3452
Office Hours : 8:00〜16:30  / 
Closed on Sat, Sun and all national holidays

Saitama Factory
2-4-16 Atago Kazo  
Saitama 347-0057 Japan
TEL : 0480-62-7970  / 
FAX : 0480-62-5855
Office Hours : 8:00〜17:00  / 
Closed on Sat, Sun and all national holidays