Aluminum Part B Weld On Socket weld to O.D. tubing. Butt weld to schedule 40 pipes. SELECT QUANTITY Stock # Description Price Qty BWALB300 3" Alum. Part B Butt Weld On 28.99 BWALB400 4" Alum. Part B Butt Weld On 39.40 BWALB600 6" Alum. Part B Butt Weld On 70.69 Related Products Aluminum Part F Weld OnCamlock GasketsAluminum Part F Camlock (FAL)