type, flange standard, ASTM. BS, JIS, DIN, GB Size, 1/2"-48" Detailed Product Description Pipe Flange/carbon steel flange/ pipe steel flange Standard; ASTM A182 ... 1500 2500 Standard BS10; Welding neck flange, plate slip-on flange, screwed boss flange, slip on boss flange., blind flange. Type Table, D E F H ...