... ISO14001 OHSAS1800 Blind Flanges, Slip on Flanges, Socket Welding Flanges, Lap joint Flanges, Threaded Flanges, Weld Neck Flanges These flanges are manufactured ... tube is very small and working pressure is very high.Lap joint FlangesSpecifications : ANSI B 16.5 from 1/2" to 24 ... the purpose. Blind Flanges, Slip on Flanges, Socket Welding Flanges, Lap joint Flanges, Threaded Flanges, Weld Neck Flanges