... WN, SO, PL, SW, LJ, BL Slip On Flanges - ANSI B16.5 Stainless Steel 304L,316L ect. Standard Chinese Flange ... 347RangeSORF, BLRF, SWRF, WNRF,SCREWED.Class150,300,600, 900, 1200, 1500,2500.Size1/4" to 48" Carbon ... , BLRF, SWRF, WNRF, SCREWED.Class150,300,600,900,1200, 1500,2500.Size1/4" to 48" Alloy ... , SWRF, WNRF, SCREWED.Class150, 300, 600, 900, 1200, 1500,2500.Size1/4" to 48" Stainless Steel WN Flange