On August 6, Heilongjiang Province-based Chinese steel producer Jianlong Corp.'s new oil casing products, i.e., N80-1 177.8 mm x 10.36 mm and J55 177.8 mm x 10.36 mm, successfully passed authentication tests.
On July 1, the company carried out its first trial rolling of N80-1 oil casing. On July 25, it succeeded in rolling 100 mt of N80-1 177.8 mm x 10.36 mm and J55 177.8 mm x 10.36 mm oil casings.