Supply welded flange, WP22 WP11 alloy welded flange the Hongyuan tube industry production: alloy flanges, welded flange with a diameter flange. (Contact: Ma Yuanyuan phone: 18,732,703,585 QQ: 619 688 609) company mainly engaged in a variety of materials pipe: 304,304 L, 316,316 L, 321,310 S ,18-8, 16Mn, 20 #, 20G, 12Cr1MoVG, P91, 10CrMo910, 15CrMo F51 welded flange sealing surface forms: raised face (RF), the concave (FM), convex (M), the tenon surface (T), the groove surface (G), the whole plane (FF). With neck flat welding flange diameter range: DN10 ~ DN600 Scope: PN Series PN2.5 ~~ PN40; Class Series Class150 ~ Class1500 flange material: carbon steel, Luo molybdenum steel 304,316,304 L, 316L, 321,347, CF8C. Manufacturing process: forging. Advantages: with neck flat welding flanges are welded flange, because there is a short-necked, thereby increasing the strength of the flange improved flange bearing efforts. It can be used in higher pressure pipelines. Disadvantages: higher cost, compared with the plate welded flange in transit due to the characteristics of its shape more easily bump