Plate, screw steel manufacturers | Dingding cold-rolled (certified) | plate, screw steel provided by Ding Ding Industrial Co., Ltd., Henan Province. Ding Ding Industrial Co., Ltd., Henan Province (www.hnddsy.com) is a professional enterprise, "cold-rolled ribbed steel CRB550", the company of "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Liu. Cold-rolled ribbed steel bars in the middle floor of strong substitution Ⅰ grade steel, the original design of the cracks if they meet the requirements, then after substitution certainly can meet the requirements, do not go checking, of course, this other strong substitution must meet the minimum reinforcement ratio requirements. Floor slab, roof and distribution of reinforcement bars. Steel plate, screw diameter is generally 5─10mm steel stock, due to generally higher floor slab stiffness, strong substitution terms of cold-rolled ribbed steel substitution Ⅰ grade steel plate, screw steel when wholesale, generally only etc., do not make The width of crack. Reinforced by rolling contour points: smooth steel: I grade steel (Q300 steel rebar) are rolled steel plate, screw for smooth circular cross-section factory, supply in the form of a disk circle diameter of not more than 10mm, length of 6m ~ 12m. Ribbed steel: a spiral-shaped, herringbone and crescent are three general Ⅱ, Ⅲ grade steel rolling herringbone, Ⅳ grade steel rolled into a spiral and crescent. Steel wire (min two kinds of low carbon steel and carbon steel) and the Strand. Cold-rolled and twisted bars: cold-rolled and cold-twisted shape.