... :carbon steel 2.Size:2.5" 3.Standard:DIN 4.lots stock of carbon steel flange ... Material:carbon steel 2.Size:2.5" 3.Standard:DIN4.Place of Origin: Henan China (Mainland) ... SW flange and Threaded flangeSize1/2'' ~240 (DN15~DN600)Pressure class150-2500lbsMaterialcarbon steel, A694 F42, F46, F48, F50 ... 304L,316, 316L ANSI B16.5 / ASME B16.47 Standard: 150LBS, 300LBS, 600LBS, 900LBS, 1500LBS. Welding Neck ...