... PL,BL,SW 2. Standard :ANSI,ASME,ASTM 3. Size:3/8"-96" High quality carbon steel forged flange ... Manufacturer 1. Types:SO,WN,PL,BL,SW 2. Standard :ANSI, ... 4. Pressure Class: PN0.25Mpa-PN2.5Mpa 5. Standard:a) ISO9000-2008b) Customers' drawings for special use 6 ... can supply: WN, SO, BL, plate, thread, socket and other special shapes 7. Painting: Black,oil,zinic ...