Size 1/8'' to 24'' Pressure 150LB, 300LB, 600LB, 900LB, 1500LB, 2500LB Connection Butt Weld & Socket ... neck flanges, welding neck flanges are normally used for high-pressure, cold or hot temperature. We specialize these flanges in different ... .S : BS4504 , BS4504, BS1560, BS10 Stainless Steel Blind Flange,Slip on Flange,ANSI B16.5