The difference between SW and BW in pipelines | ASTM A234 butt weld pipe fittings,A182 forged pipe fittings,B16.5 weld neck flange,API 5L seamless pipes
BW-SW Adapter, 316SS, 1/2in. NB Pipe Butt Weld x 1/4in. OD Tube Socket Weld - BW-SW Adapter, 316SS, 1/2in. NB Pipe Butt Weld x 1/4in. OD Tube Socket Weld