... : Alloy steel 3.Cert:ISO9001:2008,TUV2010, PED2010 ANSI Alloy steel PL LB25001. Type: WN, SO, SW, LJ, BL, TH, PL,LWN, Orifice Flanges and ... Non-Standard flanges 2. Material: carbon steel, stainless steel and alloy steel flange3. Standard: ANSI, JIS, BS, DIN, UNI ...