We already have received the certification of "ISO9001".
The coverage of ‘ISO9001’ include (not limited to) the process from products-inquiry (by external clients) to order acceptance, design, manufacturing and delivery. The products include (not limited to) tie rod, rod for buildings, D-type lifting steel bar, caisson lifting steel bar, anchor bolt.
The whole process at iron and steel manufacturers includes the purchase of raw materials and manufacturing of materials (circle steel) with electric furnace, continuous casting machine, and rolling mill machine. At our company, we implement the upset-process with the materials, and proceed with the comprehensive manufacturing process of tapping-process, hole-light processing, test/examination, and surface treating.
■Operations from the raw materials to tie rod