This kind of welding process creates a bond stronger ... Regular-bodied for pipes and fittings up to 4 inches in diameter, medium for up to 6 inches, and heavy for up to 12 inches.

Welded steel pipes "now pose more of a risk to us for failure ... The authority is, for example, working on a $282 million, 96-inch main replacement project in Macomb County, Coffey said.

The faulty weld in a fitting girth connecting two sections of pipe "was completed at a fabrication ... The leak in the 36-inch diameter pipeline spilled down a hill and into a creek, prompting ...

Indeed, they take welding very seriously at Local 572 ... Precision is crucial — you might have to make a 3.5-inch pipe fit inside a wall that’s 3.75 inches thick, for example.

The Arizona pipeline featuring steel pipe with a 30-inch diameter was installed in 1986 ... coalesced on the outside of the pipe near a seam weld. Spiral wrap tape is more vulnerable to the ...