TOKYO—The quality scandal at Kobe Steel Ltd. deepened Friday after the company said one of its copper plants was under investigation for breaching Japan’s industrial standards. Inspectors Japan’s Quality Assurance Organization took issue with copper pipes produced at a Kobe Steel plant in Hadano, a city west of Tokyo, the company said. The pipes are used in plumbing and air-conditioning systems. The nonprofit certifies adherence to both Japanese and international standards, according to its website.

Source: Wall Street Journal October 20, 2017 11:13 UTC