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 coiled length of steel is usually delivered by cold-rolled ribbed steel wire rod, CRB550 steel can also be straight delivery. When reinforced by straight delivery, its length and tolerance by both parties through consultation. Cold-rolled ribbed steel: manufacture of steel wire rod should be consistent with GB / T 701, GB / T 4354 or other relevant standards. Delivery status reinforced by the cold state of delivery. Cryogenic tempering process allows cold rolling. Cold-rolled ribbed steel surface quality: the steel surface without cracks, folds, scars, oil and other effects of the use of the defects. Steel surface may have rust, but should not rust leather and visual visible corrosion pits or the like. Cold-rolled ribbed steel plant, Henan cold-rolled ribbed steel bars, cold-rolled by Ding Ding Ding Ding Industrial Co., Ltd., Henan Province. Ding Ding Industrial Co., Ltd., Henan Province (www.hnddsy.com) strong, credible, and other industries in other Anyang accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Dingding cold rolling and you hand into the brilliant, for a better future!