Tube Tee (AS1528), #320 Grit, 1.6mm (Wall Thickness) x 31.75mm, 316

HiBev - #320 polish externally, internally smooth (AS1528)

ASTM A554: Mill, #320 Grit, #600 Grit, #1000 Grit (Mirror, HiPol)

ASTM A269: Mill Annealed, #600 Grit Annealed

ASTM A789: 2205 Mill Annealed

ASTM A249: available from production, AS 1528: #320 Grit, internally smooth