Application1?face To Face Is According To Bs51632?flange Drilled Is According To Bs4504/en1091-23?nominal Pressure Pn10/pn16testdiameter?dn40-dn1200connection?flangeworking ...
National University Science Park, West Third Ring Road, Zhengzhou, Henan, China National University Science Park, West Third Ring Road, Zhengzhou, Henan, China
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