... Flange 1.Material: Stainless Steel,Carbon Steel ,Alloy Steel 2.Size :1/8''-64'' 3.Standard:ANSI. ... ,KS4.Specification SIZESTANDARDSERIESPRESSURE11/2''-64''ASTM ANSI B16.5, ASA, API-605,etc..slip-on, welding neck, blind, threaded, lap ... 2631, 2576, 2632,2633, 2543, 2544, etcplate, slip-on, welding neck, blind, threaded etc.Class150,300,600, ... to contact us. Carbon Steel Flange (Plate/Slip-On/Welding Neck)