... . Standard:Strictly follow the ASTM A 554 and others.Application for Decoration:1) Material of stainless steel: grade: AISI 201, 202, 301,304, 304L ... ) Applied field: construction upholstery, and industry instruments (fencing, railing,safe doors / windows, gate fittings, inside staircases, balcony balustrades,furniture, sanitary wares, kitchen ...