Pacific Gas and Electric Co. knew in fall 2009 that an inspection crew had stumbled onto cracks and defective welds on the San Bruno gas transmission line near where the pipe ruptured at a similarly ...

SAN FRANCISCO-- Pacific Gas and Electric Co. knew that the major natural-gas line that failed in a test near Bakersfield last week had ruptured nearly 40 years ago because of a flawed seam weld, but ...

First US use of a steel compression sleeve for pipeline repair confirmed nearly 7 years of Canadian and Mexican experience that the method can permanently repair longitudinal defects on an operating ...

On March 29, a split opened along 22 feet of longitudinal seam in Exxon Mobil’s 20-inch Pegasus pipe line in Mayflower’s Northwoods subdivision, according to federal accident and investigative reports ...

Our longitudinal seam welder’s unique design is easy to use and provides precise welds with each use. This automatic welder is suitable for MIG, TIG, Plasma, and Laser welding. The mandrel is designed ...