Technical standards (national standard GB, German standard DIN, American standard UNF) high-strength grade 8.8, Grade 10.9, and grade 12.9.U.S.-made grades: Grade 5, Grade 8, and Grade 10.Surface treatment: galvanized, blackened, dacromet, hot-dip galvanized.
Products are widely used in large-scale key engineering construction, machinery manufacturing, construction, ships, bridges, petrochemical, metallurgy, high-speed rail, roads, railways, petroleum, industrial and mining, pipelines, wind power and infrastructure construction and other industries.