Qualifications|KYOSEI, suppliers of gas and water piping materials, including pipes, valves, and governors

Qualifications

* Scroll the page right or left to view the complete table.

All operation sites 1986 Gained full membership of Japan Water Steel Pipe Association (WSP)
2007 Obtained ISO14001 certification
All operation sites
(excluding the administration
division and some sales divisions)
2009 Obtained ISO9001 certification
Narita Shibayama Plant 1998 Obtained ISO9002 certification
2004 Obtained ISO9001 certification
2011 Registered by Japan Water Works Association (JWWA) as a certified inspection plant for steel pipe with its outer surface coated with rigid PVC
Hashimoto Plant 2008 Registered by JWWA as a plant certified for quality of flexible pipe HF
2009 Obtain ISO9001 certification
Harima Plant 1998 Registered by JWWA as a plant certified to conduct in-house quality confirmation of flexible pipe HF
2007 Obtained ISO9001 certification
2007 Registered as a Green Partner under the Green Partner Initiative of Osaka Gas Co., Ltd.
Nagano Plant 1992 Became a certified welding facility
2007 Obtained ISO9001 certification
2007 Registered as a Green Partner under the Green Partner Initiative of Osaka Gas Co., Ltd.