sell ring flanges Offering all kind of flanges with following specifications:- Dim : ansi b16.5, din standards. - Class : 150, 300, 600, 900, 1500 & 2500 lbs - Size : 1/2"nb to 24"nb - Range : welding neck, slip-on, blind, socket weld, lap joint, screwed, long welding neck ring flanges