What is the difference between cold rolled threaded steel and regular threaded steel?

Cold-rolled rebar vs. standard rebar: The main difference is in strength and chemical composition, as cold-rolled rebar is primarily used for higher strength applications.

Specifications Differences:

Cold-rolled rebars, commonly available in sizes 15MM, 25MM, 32MM, 36MM, and 40MM; no 15MM size for plain rebars. No 12 size for cold-rolled rebars; manufacturers offer sizes 14, 16, 28.

Appearance Difference: The appearance of cold-rolled rebars differs slightly from that of standard rebars. Cold-rolled rebars lack longitudinal ribs, allowing for direct connection of the nuts.

Rebar is a common name for hot-rolled ribbed steel bars. The grade of ordinary hot-rolled rebars is composed of the HRB prefix and the minimum yield point value of the grade. H, R, and B stand for the first letters of Hotrolled, Ribbed, and Bars, respectively.

Rebar with ribs, hot-rolled, is available in three grades: HRB335 (old grade number 20MnSi), HRB400 (old grades include 20MnSiV, 20MnSiNb, 20MnTi), and HRB500.

Performance Analysis of Cold Rolled Threaded Steel Relaxation Rate

Material Relaxation Rate: In a prestressed steel test, a constant and unchanging elongation is maintained over a period of time, indicating that the stress and prestress will continuously decrease. This decrease is determined by time and the fpi/fpy ratio. This type of prestress loss is known as steel relaxation loss.

Zhongzhen Special Steel is a manufacturer specializing in the production of high-strength ribbed rebar, evolving into an integrated production enterprise encompassing R&D, production, sales, and services. The company boasts a production capacity of 30,000 tons of high-strength ribbed rebar annually. Equipped with advanced production and testing facilities, including the PSB930 ribbed rebar, it maintains a comprehensive production process and a guaranteed quality system.

Zhongzhen Special Steel (Jiangsu) Co., Ltd. is a manufacturer specializing in the production of high-strength ribbed rebars, known for producing Yancheng ribbed rebars. It has evolved into an integrated production-type joint-stock enterprise encompassing research, production, sales, and service. The company boasts an annual production capacity of 30,000 tons of high-strength ribbed rebars.

Due to the complex production process of the precision rolled threaded steel products, the cost is quite high. To save on your construction costs, our company can process the steel according to the lengths you require. This necessitates that during unloading, the precision rolled threaded steel bundles must not be damaged, and the detailed labels should be exposed for easy observation to confirm the length and quantity of the steel upon use.

Zhongzhen Special Steel (Photo) - PSB930 Reinforced Steel Bars - Yancheng Reinforced Steel Bars provided by Zhongzhen Special Steel (Jiangsu) Co., Ltd. Zhongzhen Special Steel (Jiangsu) Co., Ltd. boasts impressive capabilities and reliable reputation, having accumulated a large number of loyal customers in the metal building materials industry in Suzhou, Jiangsu. With a relentless pursuit of excellence and a spirit of continuous improvement and innovation, Zhongzhen Special Steel invites you to join us on a path to glory, creating a brighter future together!