National University Science Park, West Third Ring Road, Zhengzhou, Henan, China National University Science Park, West Third Ring Road, Zhengzhou, Henan, China
Application1、face To Face Is According To Din3352 F42、flange Drilled Is According To Bs4504/en1091-23、nominal Pressure Pn10/pn16testdiameter:dn40-dn1200connection:flangeworking ...