... 1.Welded stainless steel square tube for stair rail,safety window, guard door etc 2. Material: 201, 304, 316, 430, etc Welded Stainless Steel Square ... ASTM A554; JIS G3446; DIN EN10296-2Application: Mainly applied for machinery, medical fitness equipment, electroplating, dyeing, trains, cars ... smooth welding line, and especially suitable for bending and further fabrication. Stainless Steel Square Tube