5K Flange Forging Flange JIS Flang SOP Flange

Flat welding flange in high voltage equipment and pipelines, using 10 copper, aluminum, steel, stainless steel type lens or other shaped metal gasket. High pressure of large flange gaskets and sealing surface contact width is very narrow (line contact), processing with gasket sealing surface roughness is higher. High pressure flat welding flange connection steel gate valve product structure features: 1, high-pressure flat welding flange connection steel gate valves conform to the requirements of domestic and international advanced standard, reliable sealing, excellent performance, beautiful appearance. 2, disc and seat sealing surface with iron base alloy welding or department too stand (stellite) cobalt-based hard alloy surfacing and become, wear-resisting, high temperature resistance, corrosion resistance, good abrasion resistance, long service life. 3, high pressure flat welding flange valve stem after quenched and tempered and surface nitriding treatment, has the good corrosion resistance and abrasion resistance. 4, gate using wedge flexible disc structure, large diameter set the rolling bearing, friction small, easy opening and closing. 5, can be used in a variety of piping flange standard