... : 201, 202, 301,304, 304L, 316.etc. ASTM A554 stainless steel pipe1) Material of stainless steel: grade: AISI 201, 202, 301,304, 304L, 316 ... : construction upholstery, and industry instruments (fencing, railing,safe doors / windows, gate fittings, inside staircases, balcony balustrades,furniture, sanitary wares, kitchen wares ...