Exhaust Rain Caps : K4 Innovations. weld on half couplings

3/8 inch forged 304 stainless steel socket weld half coupling

3/8 inch class 3000 forged 304 stainless steel socket weld half coupling - socket weld X butt weld

$18.32

4 inch 304 Stainless Steel Class 150 Half Coupling

$62.89

5 inch 304 Stainless Steel Half Coupling Class 150

$455.00

6 inch NPT threaded class 150 A351 304 Stainless Steel Half Coupling, Internal Thread X Butt Weld

$386.35