GB/T 32289-2015

This standard specifies the classification and designation of high-quality carbon structural steel and alloy structural steel for large forgings, the content of orders, dimensions, shapes, weights, and allowable deviations, technical requirements, test methods, inspection rules, packaging, marking, and quality certificates. This standard applies to forged round steel with a nominal diameter of more than 250 mm to 1,500 mm, forged square steel with an edge length of more than 250 mm to 1,300 mm, and forged flat steel with a thickness of more than 250 mm to 1,000 mm and a width of more than 250 mm to 1,700 mm for general purposes (hereinafter referred to as forgings).