... 25mm-2000mm 5.Finish:zinc plate, hot galvanized. Features:A193-B7 Stud Bolt 1.Material:plain carbon steel, Alloy steel, 304 stainless ... , GB/T 153893.Grade: G2, G5, G8,4.Surface Finish: B7 zinc plated, hot dip galvanized, black oxide and etc.5 ...