Steel Angles and Channels Steel Channels Size JIS Channels 75x40 -- 380x100UPN 40 -- UPN 400PFC 100x50 -- 430x100 Standard GB/T 706:2008, JISG3192:2006, EN10279:2000, UNE-EN10025:1994 Steel Grade Q2358, Q3458, SS400, S235JR/ST37-2, S355JR/ST52-3 Steel Angles Size 20mmx20mm-250mmx250mm Standard GB/T 9787/88, JIS G 3192-2006 EN 10056 Steel Grade Q235B, Q345B, SS400, SS490, S235JR/ST37-2, S355JR/ST52-3 Steel Unequal Angles Size 65mmx50mm-200mmx150mm Standard GB/T 9787/88, JIS G 3192-2006 EN 10056 Steel Grade Q235B, Q345B, SS400, SS490, S235JR/ST37-2, S355JR/ST52-3