1.Type:Swivel ring flange 2.Std:ASME 3.Size:2"-36" 4.Class: ... 6A FLANGESTypeWeld Neck, Slip-On, Blind, Socket,Orifice Flange,Swivel Ring Flange,Anchor flange.Size1/4” - 72”Class150#,300#,400#,600 ... ,3000PSI,5000 PSI,10000 PSIStandrdANSI B16.5 ; ANSI B16.47 Series A ; Series B ;ANSI B16.48,ANSI B16.36; API 6ASpecificationCarbon SteelASTM ...