... 400 seriesStandard:ASTM A276, AISI,GB/T 1220, JIS G4303, Size &Length: as customer's requirementsSurface: pickled&sand blasting&bright,we ... us should you have any question.Here is the common size we produce,for other size, we can manufacture according to ustomer demand ... and for the big size angle bar, we offer the welded angle bar with good finish process ...