USA Industrials - Aluminum Pipe Fittings; Material Grade: Class 150 - 28845006 - MSC Industrial Supply
Amazon.com: Structural Pipe Fitting, DIY Outdoor, Use Imagination -1-1/2"Tee-E Short, 3T-8, Aluminum Magnesium, Note: ID of fitting is 1.925, to take nominal 1-1/2" steel pipe which all have an OD of 1.9". :
Aluminum Pipe Fittings Manufacturers and Suppliers in the USA
Aluminium Pipe Fittings
ALUMINUM PIPE FITTINGS HOME - ALUMINUM PIPE FITTINGS
Aluminum Internal Sleeves for Schedule 40 Pipe
Aluminum Alloy 32mm ID Round Tube Rack Pipe Fittings Connector Pack of 2 - Amazon.com
Aluminum Pipe Elbow
USA Industrials - Aluminum Pipe Fittings; Material Grade: Class 150 - 28831733 - MSC Industrial Supply
Elbow, 1 1/4 in For Pipe Size, Structural Pipe Fitting - 54WK14|3-7 - Grainger
Aluminum Pipe Fittings | Latrobe Foundry Machine & Supply Company