... Size:DN1000-DN8000 Material:carbon,stainless ,alloy Hebei Hongshuo Pipe Fitting Co.,LtdProduct name WN SO SW TH BL FLANGESizeDN1000--DN8000 and ... , PN 10, PN16, PN25, PN40 and PN64Applications rangesuch as oil industry,chemical industry, water conservancy, electric power, boiler, machinery, metallurgy, sanitary construction ...