The ruling, which is preliminary, comes in response to a complaint in February by American Cast Iron Pipe Co. and other U.S. producers, accusing the Japanese of selling the steel at unfairly low ...

Q. What’s the best way to repair and maintain the cast-iron pipes in my 134-year-old house? We have had multiple waste water pipe leaks and are dealing with one now. Most of the plumbers we have ...

The 833 miles of cast-iron pipes make up 7.5 percent of the company's main gas lines, which is three times the 2.5 percent national average. Despite the need to replace these aging pipes ...