Acute pancreatitis is usually caused by a gallstone getting stuck in the bile duct on its way from the gallbladder into the small intestine. Since the bile duct shares the same opening with the pancreatic duct, a sudden obstruction of the pancreatic opening will cause pancreatic juices to back up into the pancreas.
A welder or welder operator is a tradesperson who specializes in welding materials together. The term welder refers to the operator, the machine is referred to as the welding power supply. The materials to be joined can be metals (such as steel, aluminum, brass, stainless steel etc.) or varieties of plastic or polymer.his article is about welding as a trade. For the machine used to power arc welding procedures, see Welding power supply. For the album by Elizabeth Cook, see Welder (album) .
Welding On Exhaust. I know there are different types of welding, but I don't know any of the differences. I want to learn to weld, mainly so I can do my exhaust on my own. But I first need to know what type of welding and what type of welder I should buy. If anyone could suggest the type of welder I would appreciate it.