... ,cast 3.size:1/2''-100' 4.standard: DIN, BS, USS, JIS 5.ISO certified TypesSlip-On, Welding Neck ... Screwed Boss Flange, etc. Applicable standard GB, ASME , ANSI, MSS ,JIS , DIN , EN, BS, and customers' drawings for special use;Material Carbon ... steel, alloy steel, stainless steelPressure RatingsClass 150, 300, 600, 900, 1500 and 2500PN ...