5.5mm cold rolled steel manufacturers _ Ding Ding cold-rolled steel cold-rolled _5.5mm 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 nominal diameter range: CRB550 steel nominal diameter range of 4mm ~ 12mm. CRB650 above grade steel and a nominal diameter of 4mm, 5mm, 6mm. Cold-rolled ribbed steel length of steel is usually delivered by 5.5mm cold-rolled steel coil, CRB550 steel can also be straight delivery. When reinforced by 5.5mm cold-rolled steel delivered straight manufacturer, its length and tolerance by both parties through consultation. Reinforced by rolling contour points: smooth steel: I grade steel (Q300 steel rebar) are rolling as smooth circular section, the supply in the form of a disk circle diameter of not more than 10mm 5.5mm cold-rolled steel stock, 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.