... ASTM A 554 and others.Features:1) Material of stainless steel: grade: AISI 201, 304 4302) Applied field: construction upholstery, ... staircases, balcony balustrades,furniture, sanitary wares, kitchen wares)Specifications:1) Round pipes - Outside diameter(mm) :8,9.5,11,12, 12 ... manufactured according to customers' requirements AISI 201 304 430 stainless steel series round/ square /Rectangular tube/pipes