1.Size:1/2" to 60" 2.Pressure:150LB, 300LB, 400LB, 600LB, etc 3.Kinds material with different standards 4.Type:SO,PL,WN,RF,SW Product NameWN Stainless Steel FlangesStandardASTM,AISI,SUS,GB,DIN,ENMaterial304, 304L, 310S, 309S, 316, 316L, 317, 317L, 321,201, 202, etc.Sizes1/2" to 60" (DN8 to DN1500)Pressure Class150LB, 300LB, 400LB, 600LB, 900LB,1500LB, etc.TypeWelded Neck, Blind,Threaded, Lap ...