... , WN ,SW--Methodby forging ,forged flange--Pressure Ratingclass 150 300 600 900 1500 2500PN 6 PN10 PN16 PN25 PN40 PN64JIS 5K ... Range½” (15 NB) to 64” (1200NB) in 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150, ASA 300, PN 6,10,16 ...