L.G. Pipes and Tubes is manufacturer, stockiest & supplier of 321 Stainless Steel Welded Tubes. Huge stock of SS Pipe tube is in ready stock @ best price ISO 9001:2008 Certified321 Stainless Steel Tube 321 Stainless 321 stainless bar321 stainless steel tubing seamless321 stainless tubing suppliers321 ss bar321 stainless steel pipe321 sheet321 ss tubing321 stainless pipe321 Stainless Steel Mandrel Bends - Race Mufflers10 per page 20 per page 40 per page 60 per page 100 per page. Page of 3. 1 5/8" 45 Degree 2.5 CLR 321 Stainless Bend. Our Price $43.99. What makes our mandrel bends different is the tubing we start off with. Made from an American made 321 stainless and bent in the U.S., they are the best mandrel bends on the market.