Cold-rolled ribbed steel base material: cold-rolled ribbed steel bars should give priority to high-speed control without twisting wire. Studies have shown that 7.5mm cold-rolled steel straight purchase, Q235 base metal in the cross-sectional reduction rate of 20-30%, the strength and elongation index requirements can LL550 cold-rolled ribbed steel bars. In addition to cold-rolled ribbed steel wire rod rolling ФR7 Ф8 appropriate, the remaining section meet the specifications of the compression rate is too large, resulting in high product strength, and elongation of less than 8%. Cold-rolled ribbed steel Environmental requirements: steel test is generally within the temperature range of 10 ~ 35 ℃ were straight 7.5mm cold-rolled steel prices, there are strict requirements of the test cold-rolled strip steel straight, the temperature was 23 ± 5 ℃. Determination of tensile strength Rm: Look steel surface quality, reinforcement should be no harmful surface defects. Mark, the application of small marks, fine scribe or ink line mark the original gauge the distance, but not with the cause of premature rupture of the notch mark. The ratio of the sample to calculate the value of the original gauge rounded to the nearest multiple of 5mm, the middle value to the larger party rounding. The original gauge length shall be marked accurately to ± 1%. 7.5mm cold rolled steel straight wholesale, Jiangsu cold rolled straight rebar, cold-Ding Ding Ding Ding Industrial Co., Ltd., Henan Province by. 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!