Mengcun supply welded flange the PL plate flat welding flange, 304 stainless steel pipe flanges, Hongyuan tube industry professional (Contact: Feng Hongmei Contact: 15,932,713,817, QQ: 1,763,757,819) product quality: has passed ISO9001 international certification, pressure vessel manufacturing license. 2 Finish: rust-proof black paint, anti-rust varnish, transparent anti-rust oil, hot-dip galvanizing, cold galvanizing, 3PE coating, epoxy coating. Pressure range of welding flange, flat welding flange the welded flange purposes GD87-0506, welded flange pressure PN1.0 PN0.6 PN0.25 welded flange sealing surface form: raised face ( RF), the concave (FM), the convex surface (M), the tongue and the 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: more plate welded flange higher cost, due to the characteristics of shape easier in transit to bump I produced flange most professional, all products have quality assurance.