4 aluminum pipe schedule 40 Nominal outside diameter 1. DESCRIPTION. , a wall thickness of 0. This grade is commonly referred to as the architectural alloy. IPS Schedule 40 pipe has an outside diameter (OD) of 1. This is the most versatile of the heat treatable aluminum alloys. 237 wall thickness. 026"id)* at the cheapest online prices! You Need it! We will Cut it! ALUMINUM PIPE SCHEDULES Pipe SizeInches ScheduleNumber Diameter, Inches WallThickness WeightLbs/Ft OD ID 3/4" Nom. Aluminum Pipe 6063 is a tubular shaped pipe of 6063 aluminum alloy. Enter Code: HOT DIGGITY BAR. tftlkrkgskbimalduhiybbkspvfxnnvyytnnqwfjkblsohatmnxjsyplavtvghsxacylesjpwkthf