... : Low carbon steel, middle carbon steel, alloy steel, stainless steel 304, 316, 201 stainless stee alll threaded rodMaterial: Lowcarbon steel, middle carbon steel, alloy steel, stainless steel 304, 316, 201Class: 4.8, 5 ... : Zinc plated(yellow, black, green), black oxide chrome plated, Cr+3, hot dip galvanized Packing: 1) Bulk packing: about 20-25kgs ...