The new cold-finished production line equipment went into operation in 2008 in Anyang, the corresponding national standard GB13788-2008 also released at this time. Unlike the new cold-rolled ribbed steel cold-rolled ribbed steel cold rolling past ribbed steel manufacturers, the new production line has tempered steel cold rolled ribbed steel production, product strength, ductility and yield point have increased. The new production line factory steel, its strength has reached 550MPa. Cold-rolled ribbed steel bars and application performance results are as follows: China's national standard "rolled ribbed" GB13788─2000 in LL550 grade mechanical properties are developed with reference to international standards and standard-setting, tensile strength 550Mpa cold rolled ribbed steel plant, according to standardized elongation Germany, from two indicators contrast, the standard of cold-rolled ribbed steel bar is not lower than the international standard. Ribbed steel cold rolling processing of raw materials, cold-rolled ribbed steel Henan, Henan Province, Ding Ding Ding Ding Industrial Co., Ltd. provided by. Ding Ding Industrial Co., Ltd., Henan Province (www.hnddsy.com) strong, credible, in other industries in Henan accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Dingding Industrial and you hand into the brilliant, for a better future!