SP Koken is a company with skills in fire making, free forging, and special steel welding in a cold industrial park in Nishi-ku, Sapporo. 2015/01/28 Recruitment 2010/09/24 Would you like to give shape to your design? (Wrought iron) By processing iron by free forging, the shape you drew becomes a product. It is a unique item only for you. 2010/04/01 Thanks to you, we will celebrate the 70th anniversary of our founding on November 14, 2010. 2010/03/01 A snow fence registered with the Ministry of Land, Infrastructure, Transport and Tourism NETIS has been installed in Aomori Prefecture. Past news SP Koken Co., Ltd. Nishi-ku, Sapporo-shi, Hokkaido Hassamu 17 Jo 14-1-38 Telephone (Representative): 011-662-4131 Fax: 011-665-4447 © SPkoken Co., Ltd. All rights reserved.