bolts and nuts 1.experienced manufacturer 2.high qulity material ... with 12 product lines of machining, welding, heat treatment, assembly, painting, casting ect.,3. bolts and nuts(1)Grade: 4 ... plain, zinc plated, hot dip galvanized, dacroment(4)Material:Carbon steel, stainless steel(5)Packing: Standard export packing or ... According to customer's requirement high quality sorts of plow bolts and hex nuts